Answer:
I dont understand the question
Step-by-step explanation:
Given (x – 7)2 = 36, select the values of x. x = 13 x = 1 x = –29 x = 42
After solving the given expression the values for x will be equal to x = 1 and x = 13.
What is an expression?Mathematical actions are called expressions if they have at least two terms that are related by an operator and include either numbers, variables, or both. Adding, subtraction, multiplying, and division are all reflection coefficient operations. A mathematical operation such as reduction, addition, multiplication, or division is used to integrate terms into an expression.
As per the given information in the question,
The given equation is,
(x - 7)² = 36
x - 7 = √36
x = ±6
Then the values for x will be,
x1 = 6 + 7 = 17
x2 = -6 + 7 = -1
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Simplify 2x + x
hi, I really need help!
Answer:
3x
Step-by-step explanation:
simplifying is basically reducing it the best you can and you do that by combining like terms.
2x +x =3x
just in case you didn't know
x=1x
On the Sampling Distribution of the Sample Proportion app in artofstat, change the Population Proportion (p) to 0.9. Keep the sample size this value of p for the whole question. Under Select how many samples (of size n) you want to simulate drawing from the population, CHANGE this to 10,000 samples. Click on Draw Sample(s) ONCE. Notice the center, spread and shape of the distribution. Change the value of n by increments of 10 (10, 20, 30, 40, 50, 60, 70, 80, 90, 100). What happens to the standard deviation of phat as n increases?
A. It stays the same.
B. Sometimes it increases and other times it decreases.
C. It increases.
D. It decreases.
As the value of n increases, the standard deviation of phat (the sample proportion) decreases. Therefore, the correct answer is D. It decreases.
The standard deviation of phat is inversely proportional to the square root of the sample size. This means that as the sample size increases, the standard deviation decreases. The larger the sample size, the more precise the estimate of the population proportion becomes, leading to a smaller spread or variability in the sample proportions.
This relationship is a fundamental property of the sampling distribution of the sample proportion. As the sample size increases, the variability due to sampling decreases, resulting in a more accurate and precise estimation of the population proportion.
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i need help getting the answer to this pleaseDetermine the equation of the circle graphed below
In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data
Graph
Center = ( - 7 , 2)
Radius = 2
equation of the circle = ?
Step 02:
equation of the circle
(x - h) ² + (y - k) ² = r ²
( h , k) = ( - 7 , 2)
r = 2
( x - (-7)) ² + (y - 2)² = 2 ²
(x + 7)² + (y - 2)² = 4
The answer is:
The equation of the circle is (x + 7)² + (y - 2)² = 4
what is the solution to the following system? (picture)
a. (2,3,4)
b. (4,3,-2)
c. (4, 3, 2)
d. (6, 7, -2)
option C
PLS MAKE ME AS THE BRAINLIEST ANSWER
Let f(x)=5x and g(x)= -x+1. Find f o g(ONLY 2 HOURS TO ANSWER!)
Answer: (b) -5x + 5
Step-by-step explanation:
f(x) = 5x g(x) = -x + 1
f(g(x)): g(x) = -x + 1 f(-x + 1) = 5(-x + 1)
= -5x + 5
5. Using complete sentences, describe how the variable h and the variable k of the general formula for a cube root function effects the graph. The general formula is
y=a³√√x-h+k
Answer: The variables h and k in the general formula for a cube root function affect the graph by causing a horizontal and vertical shift, respectively. The value of h determines the horizontal position of the graph by shifting it to the right or left along the x-axis. If h is positive, the graph will shift to the right, and if h is negative, the graph will shift to the left. On the other hand, the value of k determines the vertical position of the graph by shifting it up or down along the y-axis. If k is positive, the graph will shift upward, and if k is negative, the graph will shift downward. It is important to note that these shifts do not affect the shape of the graph, only its position on the coordinate plane. Therefore, changing the values of h and k in the general formula for a cube root function will cause the graph to shift, but the overall shape of the graph will remain the same.
Step-by-step explanation:
Convert 7/6 to a mixed number
7 out of 6 ymto a mixed number is
1¹/6
together tomas and ana weigh 145 kilograms. ana and rodrigo together weigh the same as tomas. rodrigo weighs 39 kilograms. how many kilograms does tomas weigh?
Tomas and Ana weigh 145 kilograms combined. Together, Ana and Rodrigo weigh the same as Tomas. Rodrigo is 39 kilograms in weight. Tomas is 92 kilograms in weight.
A mathematical statement with two equated algebraic expressions is known as an algebraic equation. Due to the presence of polynomials on both sides of the equal sign, an algebraic equation is also referred to as a polynomial equation.
A linear algebraic equation has a polynomial of degree 1 in it. A linear equation's most common form is a1x1+a2x2+...+anxn = 0, where at least one coefficient is a number that is not zero. Linear programming problems can be represented and solved with these linear equations.
Let X and Y represent Anna's weight and Tomas's.
Now,
\(X+Y=145 ............equation 1\\Y+39=X ..............equation2\)
We obtain this by transferring the value of X from equation 2 to equation 1,
\(Y+39+Y=145\\2Y+39=145\\2Y=145-39\\2Y=106\\Y=\frac{106}{2}\\ Y=53\)
Now that we have entered the value of Y into equation 2, we get:
\(53+39=92\)
Therefore, Tomas weighs 92 kilograms.
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3b+(-5)=(2b)³(-3)2+6=?
Answer:
b=-1
Step-by-step explanation:
given.3b+(-5)=(2b)³(-3)2+6=?
3b-5=8b-6+6
3b-5=8b
-5=8b-3b
-5=5b
-5/5=5b/5
b=-1
-3-5=-8-6+6=?
-8=-8=-8
What is the mixture iron and water made up of? Please answer correctly !!!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!
Answer:
IRON and WATER
Step-by-step explanation:
Fe + H2O
A hospital prepares a 100 mg supply of technetium-99m which has a half-life of 6 hours. How much technetium-99m will remain after 72 hours
Notice that 72 hours is 12 times the half-life of 6 hours. So, the starting amount of 100 mg will decay to half, 12 times. In other words
• after 1 hour, 100 mg decays to 50 mg
• after a total 2 hours, 100 mg decays to 25 mg
• after a total 3 hours, 100 mg decays to 12.5 mg
and so on, so that after a total of 72 hours, the hospital is left with
\(\dfrac{100\,\rm mg}{2^{12}} = \boxed{0.0244140625 \, \mathrm{mg}}\)
Holly's soccer team is trying to raise $2,100 to travel to a tournament in Florida, so they decided to host a pancake breakfast. Each person must pay $30 for the breakfast. How many people need to attend their breakfast in order to raise $2,100?
Answer:
70 people
Step-by-step explanation:
30 dollars for each person, so you divide 2,100 by 30 to find how many people.
2,100/30=70
Answer:
70
Step-by-step explanation:
Target=$2,100
Money Earned from a single person=$30
Number of persons=$2,100 /$30 = 70
Thus, 70 people need to attend their breakfast in order to raise $2,100
An object is dropped from the top of Pittsburgh's USX Towers, which is 841 feet tall. The
height of the object after t seconds is given by the function h(t) = 841 - 16t?
To the nearest whole number, estimate how many seconds until the object hits the ground.
Answer:
Step-by-step explanation:
h(t) = 841 - 16t
[Is this written correctly? The time is usually t^2, not t. I'll solve with the written equation, but check the equation]
The height at ground level is 0, so we want the value of t when h(t) = 0:
0 = 841 - 16t
-16t = -841
t = 53 seconds
One can also graph this formula and find the time to hit the ground at the point the line intersects the x axis (x = 0).
====
If the equation should have read h(t) = 841 - 16t^2, solve it as above, setting h(t) = 0.
t = (29/4) seconds
This can also be graphed.
Kidney beans $1.18 per pound
Answer:
1.18x=y
Step-by-step explanation:
x= amount of pounds of kidney beans
y= the cost
solve for brainliest
Answer:
7) 9.135x10^10
8) 3.428x10^-2
9) 2.5x10^-7
10) 4x10^10
Step-by-step explanation:
You’re only supposed to have one number to the left of the decimal point in scientific notation.
7) 9.135x10^10
8) 3.428x10^-2
9) 2.5x10^-7
10) 4x10^10
can somebody help like rn
Answer:
4
Step-by-step explanation:
(25-18+5)/4=4
(insert the variables)
Need help with this plz
Answer:
4. x = 16.8
5. x = 35.98
Step-by-step explanation:
For both triangles that you need to work on, use the trigonometric function which is tan and you are dividing opposite by adjacent for the answers.
For number 4, the equation you are setting up is tan 35 = x/24. Multiply 24 on both sides to get the answer which is 16.8 for the x side.
For number 5, the equation you are setting up is tan 17 = 11/x. As a result on your calculator, you should get 35.98 for the x side.
Paige and Olivia made 80 muffins. They put all the muffins into 13 boxes, but had 2 that did not fit in the boxes. How many muffins are in each box?
Step-by-step explanation:
There are 2 muffins in each box
Can someone pls help me with this?
Answer:
the answer is b
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Lets go one step at a time
He traveled 5 miles in 10 minutes right?That would already knock out option A because, in 10 minutes it says Keith only traveled 3 miles.
He stops at a gas station for 5 minutesoption C would be incorrect because, he was stationary and that doesn't mean that Keith should be wiggling on the graph.
He travels another 2 miles to reach the office in 5 minutesSo it is between B and D. They both have the time aspect however, B travels farther and D travels backwards.
Therefore, your only possible answer choice would be B.
In a particular college class, 60% of the students are female. Of the female students, 75% have long hair. One student is picked randomly in the class. What is the probability that it is a female with long.
There is a 0.75 percent chance that the person is a woman with long hair.
What is probability?Probability can be used to define potential. The occurrence of a random event is the focus of this mathematical field. There is a 0 to 1 value range. The likelihood of anything happening is often referred to as probability. Utilize probability to gauge a situation's likelihood of happening. Numerous factors are difficult to forecast with absolute precision. Using it, we can only speculate on whether or how likely it is that an event will occur. A probability scale with a value of 0 for an impossibility and 1 for a certainty. In a sample space, there is a one probability for every event.
E is the probability of an event . Hence,
P(E) is the ratio of favorable results to all outcomes.
In probability, an event is deemed dependent if it is impacted by other occurrences, and independent if it is wholly unaffected by the occurrence of any other event.
By applying the literature and formulas previously mentioned, we have:
F should signify for the fact that the student is female, and L should stand for the fact that the student has long hair.
P(F)
= 0.60
P(L)
= 0.50
P(F AND L)
= 0.45
P(L|F)
= 0.75
There is a probability of 0.75 that a randomly chosen student has long hair.
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Research Study: We want to figure out what characteristics of boys are most attractive to high-school girls. High-school girls were randomly assigned three groups to hear about a guy with trendy clothes, a nice car, or a confident attitude. There were 9 girls in each group. They gave ratings on a scale from 1 to 10, with 1 being "not interested" and 10 being "very interested."
Question: Is there a significant difference between the attractiveness ratings given by the three groups of girls?
What is the factor?
What are the levels of the factor?
Step 1: State Hypotheses
Null:
Research:
Step 2: Determine Comparison Distribution
What is the distribution shape and degrees of freedom for the comparison distribution?
Step 3: Set the Criteria for a Decision
Alpha = .05
dfB =
dfW=
Critical value:
Is the rejection region placed in the upper or lower tail? How do you know?
Step 3: Compute the Test Statistic
Trendy Clothes
Nice Car
Confident Attitude
8
6
10
6
7
9
9
8
10
6
6
10
8
4
8
6
5
9
7
5
10
6
6
9
6
8
8
Step 5: Make a Decision
Reject/Fail to Reject the null?
What does this mean (be sure to talk about significance)?
Test statistic Z= 0.13008 < 1.96 at 0.10 level of significance.
The null hypothesis is accepted.
There is no significant difference between the attractiveness ratings given by the three groups of girls.
Surveyed two random samples of 390 men and 360 women who were tested.
first sample percentage,
p1 = 360 ÷ 390 = 0.9230
second sample percentage,
p2 = 47 ÷ 52 = 0.9030
There is no change, according to the null hypothesis the percentage of males who have positive tests is significantly from the percentage of women who have positive tests.
Different Hypotheses:
There is a discrepancy in the percentage of schoolgirls who heard about a male with stylish clothes, a great automobile, or a confident demeanor across the three groups that were randomly allocated.
Z = (p1 - p2) ÷ √(PQ((1 ÷ n1) + (1 ÷ n2)))
where
p = (n1p1 + n2p2) ÷ n1 + n2
p = 0.920
Z = (0.9230 - 0.9030) ÷ √(0.9230((1 ÷ 390) + (1 ÷ 52)))
Test statistic Z = 0.13008
Level of significance = 0.10
The critical value Z₀.₁₀ = 1.645
Test statistic Z=0.13008 < 1.645 at 0.1 level of significance
The null hypothesis is accepted.
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Help pls!! What is the length of WZ?
Answer:
9
Step-by-step explanation:
2*3=6
so 3*3=9
co efficient of x^2 in (2-x) (5-3x) (1-7x)
Answer:
+ 80
Step-by-step explanation:
Given
(2 - x)(5 - 3x)(1 - 7x) ← expand the first two factors using FOIL
= (10 - 11x + 3x²)(1 - 7x)
Each term in the second factor is multiplied by each term in the first factor
= 10(1 - 7x) - 11x(1 - 7x) + 3x²(1 - 7x) ← distribute the 3 parenthesis
= 10 - 70x - 11x + 77x² + 3x² - 21x³ ← collect like terms
= - 21x³ + 80x² - 81x + 10
The coefficient of the x² term is + 80
Vector u has initial point at (4, 4) and terminal point at (–12, 8). Which are the magnitude and direction of u?
||u|| = 14.422; θ = 33.690°
||u|| = 14.422; θ = 146.310°
||u|| = 16.492; θ = 14.036°
||u|| = 16.492; θ = 165.964°
Let's find the magnitude of each component:
Let:
\((x1,y1)=(4,4)\)
\((x2,y2)=(-12,8)\)
\(u=ax+by\)
\(||u||=\sqrt{a^2+b^2}\)
So, let's find a and b:
\(a=|x2-x1|=|-12-4|=|-16|=16\)
\(b=|y2-y1|=|8-4|=|4|=4\)
so:
\(||u||=\sqrt{16^2+4^2}\)
\(||u||=\sqrt{272}\)
\(||u||\thickapprox16.492\)
And the direction is:
\(\theta=180-\text{tan}^{-1}\huge \text(\dfrac{b}{a}\huge \text)\)
\(\theta=180-\text{tan}^{-1}\huge \text(\dfrac{4}{16}\huge \text)\)
\(\theta\thickapprox180-\text{tan}^{-1}\huge \text(\dfrac{4}{16}\huge \text)\thickapprox165.964\)
6. Four friends play a game. At the end the game, each player counts the number of
points they earned and rolls a die. The bonus score is equal to the number rolled
multiplied by the square root of the number of points earned. The table below shows
each friend's bonus score.
Friend
Bonus Score
Jackie
2 x V 82
Philip
3 x V 51
Cassidy
6 V 19
Antonio
2 v 56
Which of the following lists the friends from highest to lowest bonus score?
No
Answer:
ill help
Step-by-step explanation:
Answer:
Cassidy
6 V 19=26
Philip
3 x V 51=21
Jackie
2 x V 82=18
Antonio
2 v 56=14
I hope this is good enough:
how many solutions are there to square root x =9
Answer:
There are 2 solutions to square root x = 9
They are 3, and -3
Step-by-step explanation:
The square root of x=9 has 2 solutions,
The square root means, for a given number, (in our case 9) what number times itself equals the given number,
Or, squaring (i.e multiplying with itself) what number would give the given number,
so, we have to find the solutions to \(\sqrt{9}\)
since we know that,
\((3)(3) = 9\\and,\\(-3)(-3) = 9\)
hence if we square either 3 or -3, we get 9
Hence the solutions are 3, and -3
Simplify sqrt16a^8b^-2 ????
Answer:
168−2
Step-by-step explanation:
that is the answer update me if I’m wrong or right
Answer:
(4a^4)/b
Step-by-step explanation:
Rewrite the expression using the negative exponent rule
Then rewrite it as (4a^4)/b
Please help me with this question!!!!!
h = 11.9 cm
cos = adjacent/ hypotenuse
therefore:
cos(24) = h/ 13
rearrange:
h = 13cos(24)
put into calculator:
h = 11.8760...
rounded to one decimal point:
h = 11.9cm
A high school student working part time as a shelf stocker had a gross income of $6675 last year. If his federal tax rate was %10 and his state tax was 3% what was the amount withheld from his Pat last year in federal tax, state tax, and FICA combined?
A. 867. 75
B. 667. 50
C. 200. 25
D. 1378. 39
The total amount withheld from the student's pay last year in federal tax, state tax, and FICA is $667.50 + $201.25 = $868.75
What is percentage?Percentage is a way of expressing a number as a fraction of 100. It is often denoted using the symbol "%" (percent sign). Percentages are used to express how much of something there is in relation to the whole. For example, if a student answers 80% of the questions correctly on a test, it means they answered 80 out of 100 questions correctly.
What is tax?A tax is a financial charge imposed by a government on individuals, businesses, or other entities to raise revenue for government spending. Taxes are typically based on a percentage of income or sales, and can be levied on various forms of income, including wages, salaries, and profits. The purpose of taxation is to fund government programs and services, such as roads, schools, and national defense. Taxes can also be used to redistribute wealth and influence economic behavior.
The amount withheld from the student's pay last year in federal tax is $6675 x 0.1 = $667.50
The amount withheld from the student's pay last year in state tax is $6675 x 0.03 = $201.25
The total amount withheld from the student's pay last year in federal tax, state tax, and FICA is $667.50 + $201.25 = $868.75
So the answer is A. 867.75
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