PLEASE HELP!!!!!
What best describes the expression y over 4 ? (5 points)
A- Some number divided by 4
B- Some number times 4
C- 4 more than some number 4
D- less than some number
Answer:
the answer is a but I have to make that extra long cuz it has to be more than 20 words
Answer:
a i just finished the test
Ping lives at the corner of 3rd street and 6th avenue. ari lives at the corner of 21st street and 18th avenue. there is a gym the distance from ping's home to ari's home. where is the gym?
The distance between ping's home to aris's home will be 1 street and 12th avenue.
What is the arithmetic operator?Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,
Summation = addition of two or more numbers or variable
For example = 2 + 8 + 9
Subtraction = Minus of any two or more numbers with each other called subtraction.
For example = 4 - 8
Division = divide any two numbers or variable called division.
For example 4/8
Multiplication = to multiply any two or more numbers or variables called multiplication.
For example 5 × 7.
Given,
Ping house ⇒ 3rd street and 6th avenue
Ari's home ⇒ 21st street and 18th avenue
So, the distance between them
21 - 3 = 18 street
18 - 6 = 12 avenue.
Hence "The distance between ping's home to aris's home will be 1 street and 12th avenue".
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If correct I’ll mark brainlist
Answer:
(0,1)
Step-by-step explanation:
The line meets the y-axis at the point (0,1)
Eig E Mathematics 30-2 6. If y = 7x, x & R, the inverse function is A. y = x7 B. y = logx7 C. y = log7x D. y = log7
The inverse function of y = 7x is y = x/7. None of the options provided, including y = x7, y = logx7, y = log7x, and y = log7, match the correct inverse function.
This means that if we have a function that relates x and y as y = 7x, the inverse function will relate x and y as y = x/7. To find the inverse function, we need to swap the variables x and y in the original equation, y = 7x, resulting in x = 7y. Then, we isolate y by dividing both sides of the equation by 7, giving us y = x/7.
This means that the inverse function of y = 7x is y = x/7. None of the options provided, such as y = x7 (incorrect exponent placement), y = logx7 (logarithm does not match the equation), y = log7x (incorrect logarithm base), or y = log7 (missing variable), represent the correct inverse function for y = 7x.
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A parabola can be drawn given a focus of (-7, 9) and a directrix of y = 11. Write
the equation of the parabola in any form.
The equation of the parabola with focus at (-7,9) and directrix at y = 11 is given as follows:
(x + 7)² = -4(y - 10)
How to obtain the equation of the parabola?The equation of a vertical parabola is given as follows:
(x - h)² = 4p(y - k)
In which:
(h,k) are the coordinates of the vertex.y = k - p are the coordinates of the directrix.(h, k + p) are the coordinates of the focus.A parabola can be drawn given a focus of (-7, 9), hence:
h = -7.k + p = 9.Directrix of y = 11, hence:
k - p = 11.
Adding the equations of the y-coordinate of the focus and of the directrix, the value of k is obtained as follows:
2k = 20
k = 20/2
k = 10.
Hence the value of p is of:
p = k - 11
p = -1.
Meaning that the equation is:
(x + 7)² = -4(y - 10)
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Pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeease
Answer:
1. 5
2. 1
3. 2
4. 23
Step-by-step explanation:
If y=6x+5, you can plug in the known x or y value to get the other with this function. For the first row, y=6(0)+5=5. For the second row, 11=6x+5, and that x=1. For the third row, x is 2, and for the fourth row y is 23. Hope this helps!
Two balls are painted red or blue uniformly and independently. Find the probability that both balls are red if: • at least one is red, • a ball is picked at random and it is pained red.
Scenario 1: At least one ball is red.
In this scenario, we have four possible outcomes: RR (both red), RB (one red and one blue), BR (one red and one blue), and BB (both blue). Since we know that at least one ball is red, the outcome BB is not possible. Therefore, we only need to consider the outcomes RR, RB, and BR.
Out of the three possible outcomes, only one outcome is favorable (RR), where both balls are red. Hence, the probability that both balls are red, given that at least one is red, is 1/3.
Scenario 2: A ball is picked at random and it is painted red.
In this scenario, we assume that one ball has been randomly chosen and it is painted red. Now, we need to consider the two possible outcomes: RR (both red) and RB (one red and one blue).
Out of the two possible outcomes, one outcome is favorable (RR), where both balls are red. Hence, the probability that both balls are red, given that a ball is randomly picked and painted red, is 1/2.
To summarize:
The probability that both balls are red, given that at least one is red, is 1/3.
The probability that both balls are red, given that a ball is picked at random and it is painted red, is 1/2.
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Solve.
5r+5= 3(5r - 4) – 10r
Answer: No solution
Step-by-step explanation:
5r + 5 = 3(5r - 4) - 10r Do multiplication
5r + 5 = 15r - 12 - 10r combine like terms
5r + 5 = 5r - 12 This is impossible. 5r cannot equal 5 and 12 meaning there is no value of r that makes this equation true so there's No Solution.
You could continue
5r + 17 = 5r
-5r =-5r
17=0 which is also not true
The left and right ends of the normal probability distribution extend indefinitely, never quite touching the horizontal axis. True False
It is false as the left and right ends of the normal probability distribution extend indefinitely, approaching but never touching the horizontal axis.
The statement is false because the left and right ends of the normal probability distribution do not extend indefinitely. In reality, the normal distribution is defined over the entire real number line, meaning it extends infinitely in both the positive and negative directions. However, as the values move further away from the mean (the center of the distribution), the probability density decreases. This means that although the distribution approaches but never touches the horizontal axis at its tails, the probability of observing values extremely far away from the mean becomes extremely low. Thus, while the distribution theoretically extends infinitely, the practical probability of observing values far from the mean decreases rapidly.
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he will look into the matter.
change to passive voice
Your question has been heard loud and clear
Passive voice
The matter will be looked into by him.
Thankyou
3a^ - a + 3 + 4a^ - 5
The expression 3a^-5 - a + 3 + 4a^ - 5 is simplified to 7a⁻⁵ - a + 3
What are algebraic expressions?Algebraic expressions are described as expressions that are composed of variables, coefficients, constants, terms and factors.
They are also expressions that are composed of mathematical or arithmetic operations, which includes;
DivisionAdditionMultiplicationSubtractionBracketFloor divisionParenthesesFrom the information given, we have the algebraic expression;
3a^-5 - a + 3 + 4a^ - 5
To simply the expression, we have to collect like terms, we get;
3a⁻⁵ + 4a⁻⁵ - a + 3
Now, add or subtract the like terms, we get;
7a⁻⁵ - a + 3
Hence, the expression is 7a⁻⁵ - a + 3
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The complete question:
Simply the expression;
3a^-5 - a + 3 + 4a^ - 5
a random sample of 784 10-ounce cans of fruit nectar is drawn from among all cans produced in a run. prior experience has shown that the distribution of the contents has a mean of 10 ounces and a standard deviation of .10 ounce. what is the probability that the mean contents of the 784 sample cans is less than 9.995 ounces? a) 0.131 b) 0.081 c) 0.101 d) 0.111 e) 0.121 f) none of the above
The probability that the mean contents of the 784 sample cans are less than 9.995 ounces is 0.081. The correct option is B
Probability is the ability to happen. The subject of this area of mathematics is the occurrence of random events. From 0 to 1 is used to express the value. Probability has been introduced in mathematics to determine how likely events are to occur.
Given mean = 10
standard deviation = 0.10
sample = 784
The probability that the 784 sample cans' average contents will be less than 9.995 ounces
P ( X < 9.995 ) = x - μ/ σ / √n
= 9.995-10/0.10/√784
= -0.005 / 0.10 /28
= -1.400
P(Z < -1.400) = 0.081
Therefore the probability that the mean contents of the 784 sample cans are less than 9.995 ounces is 0.081
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A researcher looking for evidence of extrasensory perception (ESP) tests 1000 1000 subjects. Nine of these subjects do significantly better ( P < 0.01 ) (P<0.01) than random guessing.
(a) Nine subjects may seem like a lot of people, but can you conclude that these nine people have ESP? Select the appropriate statement that explains whether or not it is proper to conclude that these nine people have ESP.
Yes. This follows directly from the 1 % 1% significance level.
Yes. This follows directly from the statistical significance.
No. Since the tests were performed at the 1% significance level, as many as 10 subjects may have done significantly better than random guessing.
No. The sample size was not large enough for any statistical inference.
it is important to note that the sample size of 1000 subjects is large enough for statistical inference, but the significance level must be taken into account when interpreting the results.
No. Since the tests were performed at the 1% significance level, as many as 10 subjects may have done significantly better than random guessing.
When conducting hypothesis testing, the significance level (in this case, 0.01 or 1%) is the probability of rejecting the null hypothesis when it is actually true. This means that there is a 1% chance of observing a significant result purely by chance, even if the null hypothesis (in this case, that the subjects do not have ESP) is true.
In this scenario, nine subjects performed significantly better than random guessing, which may suggest that they have ESP. However, due to the possibility of observing significant results by chance, it is not proper to conclude that these nine people have ESP. There is still a chance that these results are purely coincidental.
Additionally, it is important to note that the sample size of 1000 subjects is large enough for statistical inference, but the significance level must be taken into account when interpreting the results.
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solve the equation using the method of completing the square. solve the equation using the method of completing the square.
Completing the square is a method used to solve quadratic equations, so make sure the equation you're trying to solve is quadratic.
To solve an equation using the method of completing the square, rewrite it in the form \((x + p)^2\) = q, then solve for x.
The method of completing the square is a technique used to rewrite a quadratic equation in the form of a perfect square trinomial, allowing for easier factoring or solving
To solve an equation using the method of completing the square, follow these steps:
1. Start with a quadratic equation in the form a\(x^2\) + bx + c = 0.
2. Divide the entire equation by a, if necessary, to make the coefficient of x² equal to 1.
3. Move the constant term (c) to the other side of the equation.
4. Take half of the coefficient of x (b/2) and square it. This gives you \(\left(\frac{b}{2}\right)^2\).
5. Add \(\left(\frac{b}{2}\right)^2\) to both sides of the equation.
6. Rewrite the left side of the equation as a perfect square trinomial. Factor it if possible.
7. Take the square root of both sides of the equation.
8. Solve for x by isolating it on one side of the equation.
9. Simplify the square root, if possible.
10. Check your solution by substituting it back into the original equation.
Remember, completing the square is a method used to solve quadratic equations, so make sure the equation you're trying to solve is quadratic.
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The length of a rectangular rug is 18 ft. and the length of its diagonal is 22ft.
a). What is the width of the rug to the nearest foot? The width is _____
b). What is the perimeter of the rug to the nearest foot? The perimeter is ______
c) What is the area of the rug to the nearest square foot? The area is ______
Answer:
a:
13ft.
b:
61ft.
c:
228ft.
Step-by-step explanation:
pythagoras theorem part:
22^2 - 18^2 =160
√160 = 12.649... = 13ft. (rounded )
b:
18 + 18 + 12.649... + 12.649... = 36 + 25.298... = 61.298... = 61ft. (rounded)
c:
12.649... x 18 = 227.683... = 228ft. (rounded)
f(x)=-x^2-4x+5
find the vertex, zeros, and y-int.
The vertex, zeros, and y-intercept for the given quadratic equation f(x)= -x² - 4x+5 are respectively,
Vertex- (2, 1)
Zeros- (2 + i)
Y-intercept- 5
What is an Equation ?An equation is a mathematical term, which indicates that the value of two algebraic expressions are equal. There are various parts of an equation which are, coefficients, variables, constants, terms, operators, expressions, and equal to sign.
For example, 3x+2y=0.
Types of equation
1. Linear Equation
2. Quadratic Equation
3. Cubic Equation
Given that,
f(x) = y = -x² - 4x+5
y = -x² - 4x+5
For making it perfect square, we can add and subtract square value of half of coefficient of x
So, adding and subtracting +4 and -4 in the given equation
y = -x² - 4x+5+4-4
= -x² - 4x+4+5-4
= (-x +2)² +1
y-1 = (-x +2)²
So, for vertex
-x +2 = 0
x = 2
y-1 = 0
y = 1
For Zeros, y = 0
y-1 = (-x +2)²
(-x +2)² = -1
x = 2 + i, -2-i
the zeros are imaginary
For y intercept, x = 0
y-1 = (-x +2)²
y = 1 + (2)²
y = 5
Hence, vertex, zeros, and y-int. are respectively (2, 1), (2 + i), 5
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Michael has v sweets.
Lily has 5 more sweets than Michael.
James has 8 more sweets than Lily.
They have 75 sweets altogether.
Find the number of sweets Michael has.
Answer:
lily - 5
5+8= 13
James - 13
13+5= 18
18-75= 57
Michael - 57
Roy has $30 in a savings account. The interest rate is 10% per year and is not
compounded. How much will he have in 4 years?
Answer:
$43.92
Step-by-step explanation:
1st year:
30 x 10% = 3
30 + 3 = 33
2nd year:
33 x 10% = 3.3
33 + 3.3 = 36.3
3rd year:
36.3 x 10% = 3.63
36.3 + 3.63 = 39.93
4th year:
39.93 x 10% = 3.99
39.93 + 3.99 = 43.92
need help BIG TIME SOOOO CONFUSED WILL HIVE BRAINLIEST
Which inequality represents all values of x for which the quotient below is
defined?
O A. x>1
O B. x>0
O C. X20
O D. x>-1
Answer:
x \(\geq\) 0
Step-by-step explanation:
You need each of the square roots to be positive numbers, and the only for that to happen is if the variable is 0 or a positive number.
which variety of nonrandom sampling takes proportions into consideration?
a) convenience
b) judgment
c) quota
d) purposive
The variety of nonrandom sampling that takes proportions into consideration is: c) quota
Quota sampling is the variety of nonrandom sampling that takes proportions into consideration. In quota sampling, the researcher selects a specific number of participants from each subgroup of the population based on their proportion in the overall population. This ensures that the sample represents the different subgroups in the population proportionately.
In quota sampling, the researcher selects participants based on specific characteristics or proportions to ensure that the sample represents the target population accurately. The researcher sets quotas for different groups or segments based on known proportions or desired representation in the population.
For example, if a population consists of 60% males and 40% females, a quota sample might be designed to include the same proportions of males and females. The researcher would continue to select participants from each group until the quotas are met.
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Find the volume of a pyramid with a square base, where the perimeter of the base is
8.7ft and the height of the pyramid is 9.2
Round your answer to the nearest tenth of a cubic foot.
Step-by-step explanation:
9.5x8.7=82.65
the ans is ==82.65
Answer:
V≈ 14.5 ft
Step-by-step explanation:
Assume that you are pouring a wall that is 151 feet - 4 inches long, 14 feet high and 16 inches thick and the daily placement rate is 375 cubic yards per 8-hour day. What is the rate of pour in feet per hour
The rate of pour in feet per hour is approximately 2.51 feet per hour.
First, we need to convert the dimensions to feet:
Length = 151 feet 4 inches = 151.33 feet
Height = 14 feet
Thickness = 16 inches = 1.33 feet
Next, we need to calculate the volume of the wall:
Volume = Length x Height x Thickness
Volume = 151.33 x 14 x 1.33
Volume = 2813.89 cubic feet
To convert cubic feet to cubic yards, we divide by 27:
Volume = 2813.89 / 27
Volume = 104.22 cubic yards
Given the daily placement rate of 375 cubic yards per 8-hour day, we can calculate the rate of pour in cubic yards per hour:
Rate of pour = 375 / 8
Rate of pour = 46.88 cubic yards per hour
Finally, we can convert the rate of pour to feet per hour by dividing by the cross-sectional area of the wall:
Cross-sectional area = Height x Thickness
Cross-sectional area = 14 x 1.33
Cross-sectional area = 18.62 square feet
Rate of pour in feet per hour = Rate of pour in cubic yards per hour / Cross-sectional area
Rate of pour in feet per hour = 46.88 / 18.62
Rate of pour in feet per hour ≈ 2.51 feet per hour
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Find the surface area 9 cm 6 cm 6 cm
Answer:
144cm²
Step-by-step explanation:
The surface area of a shape = area of all the sides added together
area of bottom side (square) = 6 x 6 = 36
area of triangles = \(\frac{1}{2}\) x 6 x 9 = 27
27 x 4 =108
108 + 36 = 144
Answer:
\(A_{total} = 144\ cm^2\)
Step-by-step explanation:
Step 1: Determine the area of the bottom square
\(A = l * w\)
\(A = 6\ cm * 6\ cm\)
\(A = 36\ cm^2\)
Step 2: Determine the area of the triangle
\(A= \frac{h *b}{2}\)
\(A=\frac{9\ cm * (6\ cm/2)}{2}\)
\(A=\frac{9\ cm * 3\ cm}{2}\)
\(A=13.5\ cm^2\)
Since we have two of these right triangles on each side we come out to having 8 of these triangles total since we have 4 sides. We multiply 8 by our area from one triangle.
\(A=13.5\ cm^2*8\)
\(A = 108\ cm^2\)
Step 3: Determine the surface area
\(A_{total} = 36\ cm^2 + 108\ cm^2\)
\(A_{total} = 144\ cm^2\)
Answer: \(A_{total} = 144\ cm^2\)
List the intercepts for the graph, List them as ordered pair?
Answer:
roots at (-2,0) and (2,0)
vertex (maximum) at (0,4)
Step-by-step explanation:
Which of the following would NOT cast doubt of the usefulness of sample? data? Choose the correct answer below.
a. Order of questions in a survey
b. Missing data
c. Nonresponse
d. An effective sampling method
An effective sampling method is not cast doubt on the usefulness of the sample
The effective sample is a calculation of the approximate sample size needed to obtain the same degree of accuracy as a simple random sample. It is denoted mathematically by the formula n/D, where n represents the sample size and D denotes the design effect. It is employed as a means of condensing the volume of data.
Effective sample size calculations are mostly used for qualitative analyses of the sample size. The sample size calculates the total number of measurements or observations made during an experiment or survey. The effective sample size—rather than the actual sample size—is utilized in this assessment since it is thought that a sample size of 30 is necessary for an analysis to be valid.
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can you apply the properties of rational exponents to an example?
We can simplify \((16x^4)^(-1/2) to 1/(4x^2)\) using the properties of rational exponents.
Certainly! Here's an example:
Simplify the expression: \((16x^4)^(-1/2)\)
We can apply the property of rational exponents which states that \((a^m)^n = a^(m*n)\). Using this property, we get:
\((16x^4)^(-1/2) = 16^(-1/2) * (x^4)^(-1/2)\)
Next, we can simplify \(16^(-1/2)\) using the rule that \(a^(-n) = 1/a^n\):
\(16^(-1/2) = 1/16^(1/2) = 1/4\)
Similarly, we can simplify \((x^4)^(-1/2)\) using the rule that \((a^m)^n = a^(m*n)\):
\((x^4)^(-1/2) = x^(4*(-1/2)) = x^(-2)\)
Substituting these simplifications back into the original expression, we get:
\((16x^4)^(-1/2) = 1/4 * x^(-2) = 1/(4x^2)\)
Therefore, the simplified expression is \(1/(4x^2).\)
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Which aspect of Earth's orbital relationship to the Sun varies with a periodicity of both 400 Ka and 100 Ka?
These cycles are known as the eccentricity cycles, and they are one of the factors that contribute to the long-term climate variations on Earth
The aspect of Earth's orbital relationship to the Sun that varies with a periodicity of both 400 Ka and 100 Ka is the eccentricity of Earth's orbit. The eccentricity refers to the shape of Earth's orbit around the Sun, which is not a perfect circle, but an ellipse. The eccentricity of Earth's orbit changes over time due to gravitational interactions with other planets, particularly Jupiter and Saturn. When Earth's orbit is more elliptical, its distance from the Sun varies more throughout the year, leading to variations in climate and the amount of solar radiation received on Earth's surface. The periodicity of 400 Ka corresponds to a cycle of variations in Earth's eccentricity that affects the amount of solar radiation received at different latitudes and the distribution of ice ages. The periodicity of 100 Ka corresponds to a cycle of variations in Earth's eccentricity that affects the intensity of the seasons and the distribution of glacial periods. These cycles are known as the eccentricity cycles, and they are one of the factors that contribute to the long-term climate variations on Earth.
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A 100 meter dah i run on a track in the direction of the vector v = 2i6j. The wind velocity w i 5ij km/h. The rule ay that a legal wind peed meaured in the direction of the dah mut not exceed 5 km/hr. Will the race reult be diqualified due to an illegal wind? Jutify your anwer
The race result will not be disqualified due to an illegal wind.
In order to determine whether the wind velocity during the race was legal, we need to compare the wind velocity w to the legal wind speed limit of 5 km/hr. In this case, the wind velocity is given as 5ij km/h, which is purely vertical wind. The direction of the wind is not relevant in this case, since the race is run in the direction of the vector v, which is a purely horizontal direction. Since the wind velocity w is purely vertical and the race is run in a purely horizontal direction, the wind velocity w has no effect on the race result. Therefore, the race result will not be disqualified due to an illegal wind.
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usage patterns are a variable used in blank______ segmentation.
Answer:
usage patterns are a variable used in market segmentation.
Step-by-step explanation:
Usage patterns are a variable used in behavioral segmentation.
Behavioral segmentation is a marketing strategy that divides a market into different segments based on consumer behavior, specifically their patterns of product usage, buying habits, and decision-making processes. This segmentation approach recognizes that customers with similar behavioral characteristics are likely to exhibit similar preferences and respond in a similar manner to marketing initiatives.
Usage patterns, as a variable, help marketers understand and classify customers based on how they interact with a product or service. This can include factors such as the frequency of product usage, the amount of product used, the timing of purchases, brand loyalty, product benefits sought, and other behavioral indicators.
By analyzing usage patterns, marketers can identify distinct segments within their target market and tailor marketing strategies to meet the unique needs and preferences of each segment. This enables companies to develop more targeted marketing campaigns, optimize product offerings, improve customer satisfaction, and drive customer loyalty.
Overall, behavioral segmentation, including the consideration of usage patterns, allows companies to better understand and connect with their customers by aligning their marketing efforts with specific behaviors and motivations.
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What are the first 10 digits after the decimal point when the fraction $\frac17$ is written in base 16?
Answer:
The amswer is "2,4,9....."
Step-by-step explanation:
\(x=\frac{1}{7}\\\\x_d=0.\overline{142857}\\\\x_h=0.\overline{249}\\\\\)
by leave you to work out the other 7 digits:
\(\to \frac{1}{7}\approx \frac{a}{16}\\\\a= \text{first hex digit}\\\\a=floor(\frac{16}{7})=2\\\\\)
\(\to \frac{1}{7}- \frac{a}{16}\approx \frac{b}{16^2}\\\\b= \text{second hex digit}\\\\b=floor(\frac{16^2}{7} -16a)=4\\\\\)
\(\to \frac{1}{7}- \frac{a}{16}-\frac{b}{16^2} \approx \frac{c}{16^3}\\\\c= \text{third hex digit}\\\\c=floor(\frac{16^3}{7} -16^2a-16b)=9\\\\\)