Complete Question
Stillwater Junior High divides students into teams taught by a group of teachers. The table shows the number of students in each team.
Team{Number of Students}
Acers{78}
Blazers{80}
Outbacks{83}
Quasars{77}
Voyagers{82}
Total-400
Answer:
(A)81/399
Step-by-step explanation:
The probability that the Principal selects a voyager on the first try is:
82/400
Since another student is to be selected, the total population has reduced by 1 and the number of voyagers likewise has been reduced by 1.
Therefore:
Probability that another voyager is selected on the second try =
81/399
The correct option is A.
Answer:
41/200 B
Step-by-step explanation:
The student never gets taken away from the count so.
first pull probability is.. 82/400 second is... 82/400 simplify by dividing by 2. Equals 41/200
4 students took the spelling quiz. The mean of their quiz scores is 15. A fifth student took the quiz and scored 10. What is the new mean of the five scores?
Answer:
14
Step-by-step explanation:
HELP!!!!!Select all the true statements give the figure
Step-by-step explanation:
Hey there!
Your answer is Option B and C.
For option B: the exterior angle is equal to sum of two opposite interior angles. (theorem of triangle).
For Option C: angle 4 and angle 3 is 180° (i.e angle 3 + angle 4 = 180°) Or (angle 4= 180°-angle 3).
Therefore, answer: Option B and C.
Hope it helps...
Please hurryyyyy !!!! What's the slope and y intercept of 4y = 2x - 12
Answer:
slop is 0.5 and intercept of y is -3
Answer:
½ is the slope,-3 is the intercept
Step-by-step explanation:
now to find the slope and intercept
we use the equation,
y=mx + c
where m is the slope
and c is the y intercept
so we compare 4y=2x-12 to the equation
but we first have to make y the subject of the equation in the question – 4y is already the subject –
y=2x-12/4
y=2x/4 -3
comparing...
we see that m is 2/4=½ c= -3
2x + y = 12
x = 9 - 2y
x + 2y = 9
2x + 4y = 20
x + 3y = 16
2x - y = 11
y = 11 - 2x
4x - 3y = -13
y = 10 + x
-3x + 3y = 30
2x + y = 11
x-2y=-7
x = 2, y = 7
x = 5, y = 2
>
x= 3, y=5
x = 7, y=3
Answer:
Whats the question?
Step-by-step explanation:
Answer:
i need a queastion to answer this..
Step-by-step explanation:
2.5x17 pls some on solve it
Answer:
42.5
Step-by-step explanation:
You have to multiply 7 times 5 equals 35. Then you multiply 7 times 2 which is 14 plus 3 equals 5. So you have 175 as the first number. Then you put a 0 under that number. You multiply 5 times 1 which is 5 and 2 times 1 which is 2. Now you have 250 as your second number.
Add 175 plus 250 which is 425 but you have to put the decimal between 2 and 5. Now you have 42.5
Hope that helps
ميز هذا السؤال Suppose that the daily salaries in JD of workers in the Hashemite University are normally distributed with a mean of 70 JD and a standard deviation of 10 JD. Determine the value of the daily salary (X) such that 25% of the daily salaries are greater than X? 1. 071.3 JD 2. 073.9 JD 3. 76.7 JD 4. 80.4 JD
To find the value of the daily salary (X) such that 25% of the daily salaries are greater than X, we need to find the corresponding z-score using the standard normal distribution.
First, we convert the given percentage to a z-score. Since we want the upper 25% (greater than X), the corresponding z-score is the value that leaves 25% in the lower tail. Using a standard normal distribution table or a calculator, the z-score corresponding to 25% is approximately 0.674.
Next, we use the formula for z-score conversion: z = (X - μ) / σ, where μ is the mean and σ is the standard deviation. Plugging in the given values, we have 0.674 = (X - 70) / 10.
Solving for X, we get X = 0.674 * 10 + 70 = 6.74 + 70 = 76.74.
Rounding to one decimal place, the value of the daily salary X is approximately 76.7 JD. Therefore, option 3, 76.7 JD, is the correct answer.
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19th October, 2020
the diagram below is a plane figure made up
of a rectangle of sizes 50m by 28 m and an
equilateral of height 24 cm. A circle is cut-out
of the rectangle as shown. If the circle
touches the three sides of the rectangle Calculate
a) the perimeter of the figure
the remaining portion of the figure.
Answer:
Step-by-step explanation:
Equilateral Triangle:
Side of triangle = breadth of rectangle
= 28 cm
height = 24 cm
Area of triangle = \(\frac{1}{2}base * height\\\\\)
= \(\frac{1}{2}*28*24\)
= 28* 12
= 336 square cm
Rectangle:
length = 50 m
breadth = 28 m
Area of rectangle = length * breadth
= 28 * 50
= 1400 square cm
Diameter of circle = breadth of rectangle
d = 28 cm
r = 28/2 = 14 cm
Area of circle = πr²
\(= \frac{22}{7}*14*14\\\\= 22 * 2 * 14\)
= 616 square cm
Area of the remaining portion = Area of rectangle - area of circle + area of triangle
= 1400 - 616 + 336
= 1120 square cm
Perimeter of the figure = 28 + 50 + 28 + 28 + 50
= 184 cm
Hint: Perimeter of the figure. three side of rectangle + two sides of triangle
In the rectangle shown below, the length is longer than its width w. List all the possible
whole number dimensions for the rectangle, and name the dimensions that give the smallest
perimeter.
Area is 40 m2
Answer: w can be 1,2,4,5
Step-by-step explanation:
Let's recap the formula of Area:
Area = width x length = w x l
Area = 40 = w x l
The definition of a whole number: is a number without fractions; an integer such as 0, 1, 2, 3, 4, 5, 6,...
Let's start with 0. 0 times anything is equal to 0, so we cannot make 40 out of zero. Cross this out.
Next, let's try with 1:
a. 1x40 = 40
Then, applying the same concept to the rest we have these multiplications:
b. 2x20 = 40
c. 4x10 = 40
d. 5x8 = 40
e. 8x5 = 40
f. 10x4 = 40
g. 20x2 = 40
h. 40x1 = 40
Let's recap the formula of Perimeter:
P = 2 x (w + l)
So, we have the calculated perimeters (according to the above finding):
a. P= 2x(1+40)=82
b. P= 2x(2+20)=44
c. P= 2x(4+10)=28
d. P= 2x(5+8)=26
The below answers do not fit the [width < length]
e. P= 2x(8+5)=26 [not an answer]
f. P= 2x(10+4)=28 [not an answer]
g. P= 2x(20+2)=44 [not an answer]
h. P= 2x(40+1)=82 [not an answer]
mendel's postulate of independent assortment is supported by a 1:1:1:1 testcross ratio.
The concept of independent assortment is one of the fundamental principles of genetics that was first proposed by Gregor Mendel. According to Mendel's postulate of independent assortment, the alleles of different genes segregate independently of one another during the formation of gametes. This means that the inheritance of one trait does not affect the inheritance of another trait.
To test this postulate, Mendel conducted numerous experiments on pea plants and observed that the inheritance of different traits followed a predictable 1:2:1 ratio. This ratio indicated that the alleles for each trait were segregating independently of each other.
Overall, the content loaded Mendel's postulate of independent assortment is an important concept in genetics that helps explain how genetic variation is generated. The 1:1:1:1 testcross ratio is one of the many ways in which this postulate can be tested and supported.
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HELP PlZ
Which of the following graphs represents the equation
y-4=3(x-1)?
Graph A.
Graph B.
Graph C.
Graph D.
Answer:
D
Step-by-step explanation:
The point slope form of a line is y-h=m(x-k), where h is the y coordinate of the point, k is the x coordinate, and m is the slope. Therefore, a line with the equation given will have a slope of 3 and go through the point (1,4). The only graph here that matches that is graph D, meaning that it is the answer. Hope this helps!
Answer:
D is the answer
Step-by-step explanation:
please can you solve this fast
Step-by-step explanation:
\( {x}^{2} + 8x = 0\)
\( {x}^{2} + 8x + 16 = 16\)
\((x + 4) {}^{2} - 16 = 0\)
Which relation is not a function?
Hurry quick I’ll mark brainlyest now hurry
Answer:
B because the x value repeats
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
beacuse the 7 is on y and it changes whitch cant work
if v²=u²+2gs, find te value of s when v = 25 , u = 12 and g = 10
The value of s for the given value is 24.05.
Given is an equation v² = u²+2gs, we need to find the value of s if v = 25, u = 12 and g = 10,
So,
25² = 12² + 2(10)s
625 = 144 + 20s
20s = 481
s = 24.05
Hence the value of s for the given value is 24.05.
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The distance a person can travel varies directly with the time they have been traveling if going at a constant speed. If Phoenix traveled 78 miles in 1.5 hours while going at a constant speed, how far will he travel in 2 hours at the same speed?
Answer:
answer is 175 miles, have a good day <3
Martin wants to use coordinate geometry to prove that the opposite sides of
a rectangle are congruent. He places parallelogram ABCD in the coordinate
plane so that A is (0, 0), B is (a,0), C is (a, b), and D is (0, b).
What formula can he use to determine the distance from point D to point A?
A. 0-0)2+(b-0)² = √√b² = b
B. (a-a)2+(b-0)² = 6²
C. (0-0)² + (b-0)² = 6²
OD. √(-a)2+(b-0)²-√√b² = b
The correct answer is option A which is the distance between A and D will be AD = \(\sqrt{(0-0)^2-(b-0)^2}=\sqrt{b^2}=b\).
What is coordinate geometry?A coordinate plane is a 2D plane which is formed by the intersection of two perpendicular lines known as the x-axis and y-axis.
The formula utilised to find the distance between two points is;-
X = \(\sqrt{(x_2-x_1)^2+(y_2-y_1)^2\)
We have the coordinates of the point A = (0, 0) and D is (0, b).By applying the formula to find the distance between A and D.
AD = \(\sqrt{(0-0)^2-(b-0)^2}=\sqrt{b^2}=b\).
Therefore the correct answer is option A which is the distance between A and D will be AD = \(\sqrt{(0-0)^2-(b-0)^2}=\sqrt{b^2}=b\).
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Alexis can run 5/2 miles in 1/4hrs. What is her speed in miles per hour?
Solution
We are given
Distance = 5/2 miles
Time = 1/4 hours
Answer:
The speed would \(10~\text{mph}\).
Step-by-step explanation:
Step 1: State the formulas required
The formula for speed is:
\(\text{Speed}=\frac{\text{Distance}}{\text{Time}}\)
Step 2: Substitute the values into the formula
The distance is \(\frac{5}{2}~\text{miles}\) and the time is \(\frac{1}{4}~\text{hours}\).
Substitute these values into the formula:
\(\text{Speed}=\frac{\text{Distance}}{\text{Time}}\\\text{Speed}=\frac{\frac{5}{2}}{\frac{1}{4}}\\\)
Step 3: Calculate
\(\text{Speed}=\frac{\frac{5}{2}}{\frac{1}{4}}\\\\\text{Speed}={\frac{5}{2}}\div {\frac{1}{4}}\\\\\text{Speed}={\frac{5}{2}}\times 4\\\\\text{Speed}={\frac{20}{2}}\\\\\text{Speed}=10\)
So, the speed is \(10~\text{miles per hour}\) or \(10~\text{mph}\).
a rectangle has one side of 10 cm. how fast is the area of the rectangle changing at the instant when the other side is 17 cm and increasing at 5 cm per minute? (give units.)
Hence 85 is the area of the rectangle changing at the instant when the other side is 17 cm and increasing at 5cm per minute.
What is rectangle?
A rectangle is a sort of quadrilateral with parallel sides that are equal to one another and four vertices that are all 90 degrees apart. Because of this, it is also known as an equiangular quadrilateral. Because the opposite sides of a rectangle are equal and parallel, it can also be referred to as a parallelogram.the area of the rectangle changing at the instant when the other side is 17 cm and increasing at 5cm per minute
This can be written as A=17x
Now differentiate with respect to t.
dA/dt=17 dx/dt
increasing at 5cm per minute
dx/dt=5
dA/dt=17 (5)
dA/dt= 85
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Lotteries In a New York State daily lottery game, a sequence of two digits (not necessarily different) in the range 0-9 are selected at random. Find the probability that both are different.
The probability that both digits in a New York State daily lottery game are different is 0.9, or 9 out of 10.
To find the probability that both digits in a New York State daily lottery game are different, we need to first calculate the total number of possible outcomes. Since there are 10 digits (0-9) that can be selected for each of the two digits in the sequence, there are a total of 10 x 10 = 100 possible outcomes.
Now, we need to determine the number of outcomes where both digits are different. There are 10 possible choices for the first digit and only 9 possible choices for the second digit, since we cannot choose the same digit as the first. Therefore, there are a total of 10 x 9 = 90 outcomes where both digits are different.
The probability of both digits being different is equal to the number of outcomes where both digits are different divided by the total number of possible outcomes. Thus, the probability is 90/100, which simplifies to 9/10, or 0.9.
In summary, the probability that both digits in a New York State daily lottery game are different is 0.9, or 9 out of 10. This means that there is a high likelihood that both digits selected will be different.
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what is -4x+3y=23
x-y=-7
Step-by-step explanation:
Solve linear equation two variable
Unless specified, all approximating rectangles are assumed to have the same width.
Evaluate the upper and lower sums for f(x) = 6 - x², -2 ≤x≤ 2,
with n = 2, 4, and 8. Illustrate each case with a sketch similar to the figure shown below. (Round your answers to two decimal places.)
The upper sum is 24 and the lower sum is 8 for the given function
f(x) = 6 - x², -2 ≤x≤ 2.
What is meant by a function?A function from a set X to a set Y in mathematics assigns to each element of X exactly one element of Y. The domain of the function is the set X, and the codomain of the function is the set Y.
The first known approximation to the concept of function is attributed to the Persian mathematicians Al-Biruni and Sharaf al-Din al-Tusi. Functions were originally idealistic representations of how one variable quantity depended on another. The location of a planet, for example, changes throughout time. Historically, the concept was formed with infinitesimal calculus near the end of the 17th century, and the functions that were analyzed were differentiable until the 19th century.
Given,
f(x) = 6 - x²
-2 ≤x≤ 2
When n=2, partition of interval -2, 0, 2
When x=-2, f(-2)=6-4
f(-2)=2
x=0, f(0)=6-0
f(0)=6
x=2, f(2)=6-4
f(2)=2
Upper sum= M₁S₁+M₂S₂
=6(2)+6(2)
=24
Lower sum=m₁ s₁+m₂ s₂
=2(2)+2(2)
=8
Therefore, upper sum=24 and lower sum= 8
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The cost of 6 pounds of almonds is $23.28. What is the constant of proportionality that relates y, the cost in dollars, to x, the number of pounds?
Answer:
3.88
Step-by-step explanation:
y = 23.28/6 x
y = 3.88 x
so, the constant of proportionality is 3.88
Which representation shows y as a function of x?
please please please helpppp, (please show work if you can)
Answer:
∴ m∠KIJ = 18° and m∠HIJ = 50°
Thus, option a is correct.
Step-by-step explanation:
From the figure, it is clear that:
m∠KIH = m∠HIJ + m∠KIJ
Given
m∠KIH = 68°m∠KIJ = (2x + 6)°m∠HIJ = (9x - 4)°now substituting m∠KIH = 68°, m∠KIJ = (2x + 6)° and m∠HIJ = (9x - 4)° in the equation
m∠KIH = m∠HIJ + m∠KIJ
68° = (2x + 6)° + (9x - 4)°
switch sides
\(\left(2x+6\right)+\left(9x-4\right)=68\)
Group like terms
\(2x+9x+6-4=68\)
\(11x+2=68\)
Subtract 2 from both sides
\(11x+2-2=68-2\)
Simplify
\(11x=66\)
Divide both sides by 11
\(\frac{11x}{11}=\frac{66}{11}\)
Simplify
\(x=6\)
Hence, the value of x = 6
Therefore,
m∠KIJ = (2x + 6)° = 2(6) + 6 = 12 + 6 = 18°
m∠HIJ = (9x - 4)° = 9(6) - 4 = 54 - 4 = 50°
∴ m∠KIJ = 18° and m∠HIJ = 50°
Thus, option a is correct.
a random sample of 150 people was taken. 98 of the people in the sample favored candidate a. we are interested in determining whether or not the proportion of the population in favor of candidate a is significantly more than 57%. [r] refer to exhibit 9-6a. at the 0.1 level of significance, what conclusion do you draw? group of answer choices
At the 0.1 level of significance, the conclusion we come up with is to reject the null hypothesis.
we are given that a random sample of 150 people was taken. 98 of the people in the sample favored the candidate, were it to determine whether or not the proportion of the population in favor of candidate a is significantly more than 57%.So we need to find the test statistic, which is 1.98 determined from the z score, here the rejection region is the number more than 1.28, and 1.98 is greater than 1.28, so it is better to simply reject the null hypothesis.
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Find the volume of the parallelepiped with one vertex at (−2,−2,−5), and adjacent vertices at (−2,5,−8), (−2,−8,−7), and (−7,−9,−1)
The to find the volume of the parallelepiped is V = |A · B × C| where A, B, and C are vectors representing three adjacent sides of the parallelepiped and | | denotes the magnitude of the cross product of two vectors.
The cross product of two vectors is a vector that is perpendicular to both the vectors, and its magnitude is equal to the product of the magnitudes of the two vectors multiplied by the sine of the angle between the two vectors he three adjacent sides of the parallelepiped can be represented by the vectors v1, v2, and v3, and these vectors can be found by subtracting the coordinates of the vertices
:v1 = (-2, 5, -8) - (-2, -2, -5)
= (0, 7, -3)v2 = (-2, -8, -7) - (-2, -2, -5)
= (0, -6, -2)v3 = (-7, -9, -1) - (-2, -2, -5)
= (-5, -7, 4)
Using the formula V = |A · B × C|, we can find the volume of the parallelepiped as follows:
V = |v1 · (v2 × v3)|
where v2 × v3 is the cross product of vectors v2 and v3, and v1 · (v2 × v3) is the dot product of vector v1 and the cross product v2 × v3.Using the determinant formula for the cross-product, we can find that:
v2 × v3
= (-6)(4)i + (-2)(5)j + (-6)(-7)k
= -48i - 10j + 42k
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last year, tea off served a total of 3,560 cups of chamomile tea to its customers. this year, the coffee served 2,492 cups. what is the percent of decrease in the annual amount of chamomile tea served?
Answer:
30%
Step-by-step explanation:
% decrease = decrease/original value × 100
decrease = 3560-2492 = 1068
so it's 1068/3560× 100
= 30%
Answer:
Step-by-step explanation:
Decrease = 3560 - 2492 = 1068
\(Decrease percentage = \dfrac{1068}{3560}*100 \\\\\\ = 30\)
= 30%
HELP HELP HELP THANK YOU
0.6 can be written in fractions form as;
\(0.6 = \frac{6}{10} \)
By simplifying the numeration and denominator by 2, you get;
\( \frac{3}{5} \)
Now that we have common denominators we can compare both fractions and say that the one with the higher denominator is larger, Hence=
\( \frac{4}{5} > \frac{3}{5} \)
\( \frac{4}{5} > 0.6\)
Answer:
4/5 > 0.6
Step-by-step explanation:
Given into Decimal:
4/5 = 0.8
Thus, 0.8 > 0.6
Hence, Answer = 4/5 > 0.6
~Learn with Lenvy~
PLEASE HELP!!!
A system of linear inequalities is graphed below.
What are the linear inequalities for the system? Show your work, or explain your answer.
Answer:
System of linear inequalities is x - y + 1 < 0 and x + 2y +6 < 0
Step-by-step explanation:
Given:
The dotted line has two points as (-1,0) and (0,1).The solid line also has two points as (-6,0) and (0,-3).To Find:
Linear inequality for the system.Formula used:
Equation of a line passing through point (x1, y1) and (x2, y2) is given by (y-y1) = (y2-y1)/(x2-x1) * (x-x1)According to question, we have
Inequality for dotted line :
(y-1) > (0-1)/(-1-0) * (x-0)
y - 1 > x
x - y + 1 < 0...(1)
Inequality for solid line:
(y-(-3)) < (0-(-3))/(-6-0) * (x-0)
y + 3 < -x/2
x + 2y +6 < 0...(2)
Using (1) and (2), we get
System of linear inequalities is x - y + 1 < 0 and x + 2y +6 < 0.
For what values of x is ((log(3-x)/(sqrt(x-1)) defined?
Answer: 1<x<3
Step-by-step explanation:
There are 3 rules in one that are needed for this problem
1st: you can never get a 0 at the bottom of a denominator so x \(\neq\) 1
\(\sqrt{x-1}=0\\ x-1=0\\x=1\) would make a value of 0 on the bottom of a denominator which is not allowed.
2nd: you can never get a - under the square root so x cannot be less than 1
3rd. you can never get a log that is equal to 0 or less than 0 so x
3-x=0
-x=-3
x=3
so x cannot =3 or be greater than 3
the values that x CAN be are 1<x<3
8x-3y=9
3x+2y=8
(Guys need help on this simultaneous equation)
Step-by-step explanation:
sorry that's all i know hehe