work out a & e
will mark brainlest

Work Out A & Ewill Mark Brainlest

Answers

Answer 1

Answer:

a = 14

b = 15

c = 15

d = 18

e = 18

Step-by-step explanation:

The stratified sampling works as follows:

stratified sampling = (Population of subgroups)*(total sample size)/(entire population)

in this case, sample size = 80

entire population = 140 + 150 + 150 + 180 + 180 = 800

Population sample is the number of students of each year (for year 7, the population of subgroup is 140, and so on)

whith this equation we can find all the missing values:

a = (140)*(80/800) = 14

b = (150)*(80/800) = 15

c = (150)*(80/800) = 15

d = (180)*(80/800) = 18

e = (180)*(80/800) = 18


Related Questions

Pls answer B. C. and D.

Answers

B. Plug 2 in for “x” in “y=3x-2”. If you don’t get -1, the. You know that point is not a solution. In this case, we get 4, which is not equal to -1.

C. Again, you plug 2 in for “x”. Here the answer is in fact -1, so we know that (2,-1) is a solution.

D. You just graph the two lines. As we can see, (2,-1) only falls on one of the equations. This means that (2,-1) is only a solution of “y=-2x+3”.

If you apply the changes below to the absolute value parent function, f(x) = |x|
what is the equation of the new function?
• Shift 8 units left,
• Shift 3 units down,
O A. g(x) =|x- 8|- 3
B. g(x) = |x - 3|- 8
OC. gx) =|x-3|+ 8
D. g(x) = |x+ 8|-3

Answers

Answer:

its d because inside the abs value thing ur gonn take that +8 and do the opposite of what it says so negative 8 to the left then ur just gonna go down negative 3

Please help me with this question

Answers

Answer:

1/9

Step-by-step explanation:

6 feet = 6*12 = 72

Scale factor = 8/ 72 = 1/9

Answer:

1/9

Step-by-step explanation:

6ft = 72 inches

8/72 = 1/9

Find the value of x if 7,21,x and 35 are in proportion

Answers

try 28?

It is the number missing from this sequence.


Solve for r.
7(r + 1) = 20.3

Answers

Answer:

r = 1.9

Step-by-step explanation:

7r + 7 = 20.3

    - 7      - 7  

7r = 13.3

divide by 7

r = 1.9

Answer:

r = 1.9

Step-by-step explanation:

7(r + 1) = 20.3

Multiply the parenthesis by 7:

7r + 7 = 20.3

Subtract 7 from each side:

7r = 13.3

Divide 13.3 by 7 to find r:

r = 1.9

How far Sam is away from the donut shop in the following graph given below

Answers

Answer:

WHAT GRALPH  

Step-by-step explanation:

Answer:

The answer is 2

Step-by-step explanation:

The point that sam is at and the point the donut shop is at is only 2 points away from eachother, the answer is 2

the points (80,20) and (120,30) form a proportional relationship. What is the slope of the line that passes though these points? BRAINLIST IF RIGHT!!!!!

Answers

Answer:

1/4

Step-by-step explanation:

gradient formula= Δy/Δx

80-120/20-30=1/4

HELP PLEASE LOTS OF POINTS!!

Answers

Answer:

Thus, f and g are inverse functions

Step-by-step explanation:

Inverse Functions

If two functions f(x) and g(x) are inverses, then it follows that:

[tex]f\circ g(x)=x[/tex]

Or:

[tex]g\circ f(x)=x[/tex]

We are given

[tex]\displaystyle f(x)=\frac{1}{4}x-6[/tex]

[tex]g(x)=4x+24[/tex]

Let's test if they are inverse functions:

[tex]f\circ g(x)=\frac{1}{4}(4x+24)-6[/tex]

Simplifying:

[tex]f\circ g(x)=x+6-6=x[/tex]

Now find:

[tex]\displaystyle g\circ f(x)=4\left(\frac{1}{4}x-6\right)+24[/tex]

Operating:

[tex]\displaystyle g\circ f(x)=x-24+24=x[/tex]

Thus, f and g are inverse functions

To stay healthy kevins doctor said he should try to consume at most 2000 calories a day write an inequality to show the amount of calories Kevin should consume

Answers

Answer:

C ≤ 2,000 calories

Step-by-step explanation:

Here, we want to write an inequality

Let the number of amount of calories to be consumed be C

The term at most means that it cannot pass 2,000

Hence, it must be lesser than this

So the inequality will be;

C ≤ 2,000 calories

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPP

The area, A, in square feet, of the base of a rectangular storage bin in a warehouse is given by the function A(x) = -2x2+ 36x, where x is the width, in feet, of the storage bin.


Part B: The process of completing the square can be used to calculate the width, in feet, of the storage bin that gives a maximum area.

A(x) = -2x2 + 36x

A(x)= -2(x – 9)2 + ___

What is the missing value in the work shown?

A.
162

B.
-81

C.
-162

D.
81

Answers

Answer:162

Step-by-step explanation:

The missing value is 162,

Option A is the correct answer.

What is a rectangle?

A rectangle is a 2-D shape with length and width.

The length and width are different.

If the length and width are not different then it is a square.

The area of a rectangle is given as:

Area = Length x width

We have,

To complete the square for the function.

A(x) = -2x² + 36x,

We need to first factor out the coefficient of x², which is -2:

So,

A(x) = -2(x² - 18x)

Next,

We need to add and subtract a term that will allow us to factor the expression inside the parentheses into a perfect square.

To do this,

We need to take half of the coefficient of x, which is -18/2 = -9, square it, and then add and subtract the result.

So,

A(x) = -2(x² - 18x + 81 - 81)

Now,

We can rewrite the expression inside the parentheses as a perfect square.

A(x) = -2((x - 9)² - 81)

Finally, we can distribute the -2 and simplify.

A(x) = -2(x - 9)² + 162

So,

The missing value is 162,

Thus,

The missing value is 162,

Learn more about rectangles here:

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Solve the system by substitution.
y=X - 8
y = 2x – 14.

Answers

Hey there!

The answer to your question is (6, -2)

To solve for substitution, we simply make the right side of the equations equal to each other:

[tex]x-8=2x-14[/tex]

Add [tex]14[/tex] to both sides:

[tex]x + 6 = 2x[/tex]

Subtract [tex]x[/tex] from both sides

[tex]6=x[/tex]

Now, we have to solve for [tex]y[/tex], and we can do so by plugging in the value of [tex]x[/tex] in to one of the equations:

[tex]y = 6 - 8[/tex]

[tex]y = -2[/tex]

Therefore, your solution is (6, -2)

Have a terrificly amazing day!

Your answer would be (6,-2)

Please help ASAP. this isn't a quiz​

Answers

Answer:

people fall in love in a serois way.

Step-by-step explanation:

slope= -1 y- intercept= (0, -1/2). the points are (-1/2,0) and 0, -1/2)

A jar contains 15 red marbles, 10 green marbles, and 11 blue marbles. What is the probability that a marble chosen at random from the jar will NOT be green?

Answers

Answer:

Quantity A is greater.

Step-by-step explanation:

Note that there are 16 total marbles. A is simply a set of sequential events. On the first, you have 10/16 chances to draw a red. Supposing this red is not replaced, the chance of drawing a second red will be 9/15; therefore, the probability of A is (10/16) * (9/15) = 0.375. Event B is translated into 2 events: Blue + (White or Red) or (White or Red) + Blue. The probabilities of each of these events, added together would be (2/16) * (14/15) + (14/16) * (2/15) = 0.2333333333; therefore, A is more probable.

Simplify: 6.25(2x + 4y) - (4x + 9)

Answers

Answer: 8.5x+25y−9

Step-by-step explanation:

Triangle RST is translated 6 units to the left and 4 units up to create triangle R’S’T’

Which rule best describes this transformation?
A) (x,y) —> (6x, -4y)
B) (x,y) —> (-6x, 4y)
C) (x,y) —> (x + 6, y - 4)
D) (x,y) —> (x - 6, y + 4)

Answers

Answer:

B (x,y) —> (-6x,4y)

Step-by-step explanation:

6 is moving left which is negative

4 is moving up which is positive

Four fifths of the children in a school are boys. Five eighths of the girls in the school are right-handed. What fraction of the children in the school are left-handed girls?

Answers

Answer:

See below

Step-by-step explanation:

Let x rep right handed

Then,

5/8× x

= 5x/8

Since 4/5 are boys

1 - 4/5

1/4

Then,

5x/8 = 1/4

20x = 8

x = 8/20

x = 2/5

Therefore, the fraction of the girls in the school that are left handed is 2/5

Danny charges $48 for 4 hours of swimming lessons, Martin charges $28 for 2 hours of swimming lessons. Who offers a better deal?

Answers

Answer:

Danny.

Explanation:

$48=4hrs

1hrs= $12

$28=2hrs

1 hrs = $14

therefore, danny offers a better deal.

A 24 foot long bleacher stand has a
base angle of 30°. How high above the ground
is the last row of seating?

Answers

Answer: 12ft


Explanation:

a = h

24ft = za
24= za

12 = a

Simplify xz^3 x 4x^4z^5

Answers

Answer:

4x⁵z⁸

Step-by-step explanation:

xz³ₓ4x⁴z⁵ =

= 4x¹⁺⁴z³⁺⁵

= 4x⁵z⁸

Find the volume. Round to nearest hundredth

Answers

Answer:

2pir^2 + 2pirh

2(pi)(3.2)^2+2pi(3.2)(8)

=225.19

=225.2

What is the area, in square feet, of the shape below? Express your answer as a fraction in simplest form.

Answers

1/2*base*height = 1/2*5/3*3/4 = 5/8 feet^2

The area of the triangle will be 5/8 square feet.

What is triangle?

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted ΔABC.

In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane.

Area: ½ × base × heightPerimeter: sum of side lengths of the triangleNumber of vertices: 3Number of edges: 3Internal angle: 60° (for equilateral)Sum of interior angles: 180°Right angle: 90 degrees

Given is a triangle as shown in the image.

Now, the area of triangle will can be written as -

[A] = 1/2 x [b] x [h]

[A] = 1/2 x 5/3 x 3/4

[A] = 1/2 x 5/4

[A] = 5/8 square feet

Therefore, the area of the triangle will be 5/8 square feet.

To solve more questions on angles and triangles, visit the link below -

brainly.com/question/18584968

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Find the mzV.
y
(3x - 11)
(x - 8)°
U
(x +8°W
\(2x +70°
Z
7
Y

Answers

Answer:

c) 193

Step-by-step explanation:

Sum of all the angles of the pentagon = 540

2x + 7 + x + x + 8 + 3x - 11 + x - 8 = 540

2x +x + x + 3x + x  + 7 + 8 - 11 - 8 = 540

                              8x - 4             = 540

                                             8x   = 540 + 4

                                            8x = 544

                                              x = 544/8

                                             x = 68°

∠V = 3x - 11

     = 3*68 - 11

    = 204 - 11

    = 193°

Answer:

y----d=b

Step-by-step explanation:

Find the measure of angle 1.

Answers

9514 1404 393

Answer:

  (a)  84°

Step-by-step explanation:

If the upper side of angle 1 is extended so that it crosses the lower parallel, the angle it makes there corresponds to the one marked 51°, so is also 51°. That makes angle 1 the exterior angle of a triangle with remote interior angles of 51° and 33°. Angle 1 is the sum of those angles:

  ∠1 = 51° +33° = 84°

_____

Alternate solution

Draw a line through the vertex of angle 1 parallel to the other two parallel lines. The lower half of angle 1 is then an alternate interior angle to the one marked 33°, so is 33°. The upper half of angle 1 is a corresponding angle to the one marked 51°, so is 51°. That makes angle 1 be the sum of 33° and 51° angles, so 84°.

WILL MAKE AS A BRAINILIST
A piggy bank contains 4 quarters, 18 dimes, 10 nickels, and 8 pennies.A coin is chosen at random,not replaced, then another is chosen. Find each probability.

Answers

32/195 is the correct answer

Which expressions are equivalent to 3p+15

Answers

Answer:

Left most and the one u selected

Step-by-step explanation:

7p-4p+15 = 3p+15

3(p+5) = 3p + 3 * 5 = 3p + 15

2p-p+15 = p+15

3(p+15) = 3p+45

if correct, pls mark 5 star, thanks, and brainliest!

1 and 2.

7p - 4p + 15

3p + 15

3 (p + 5)

(3 • p) + (3 • 5)

3p + 15

I hope this helps let me know if you need any more help :)

In a unit circle, ø=180°. What is the terminal point?

A. (1,0)
B. (0,-1)
C. (0,1)
D. (-1,0)

Answers

I think its B? Im not sure

graph this please it’s been due

Answers

Answer:

Step-by-step explanation:

Here, we want to graph the given line

To do this, we need the x and y intercept

The general equation form

is ;

y = mx + b

where m is slope and b is the y-intercept

from the question, b is -2

The point at b is (0,-2)

To get the x-intercept, equate y to 0

0 = 3x - 2

3x = 2

x = 2/3

So the x-intercept is (2/3,0)

So to graph the line, we have to join the points;

(0,-2) and (2/3,0) with a straight line

Please check attachment for this

Midterm Part 1
A high school principal has to choose an academic
team of four people. She decided to choose them from
an AP Statistics class of 19 people.
How many ways can the principal form a team?
A) 5,232 B) 3,876 C) 4,253 D) 8,121 E) 7,821

Answers

Answer:

Step-by-step explanation: ok

How much honey does a beekeeper take from the hive

Answers

A milllion probably like 1 million
A beehive can produce 30 to 60 pounds of honey a year, but sometimes up to 100. I'm not sure how much beekeepers take from that amount.

A box contains 5 chocolate chip cookies, 4 sugar and 6 oatmeal raisin. What is the probability of picking a chocolate chip cookie?

plssss helpppp

Answers

Answer:

5/10

Step-by-step explanation:

if you add all the non- chocolate chip cookies than you have 10 other cookies.

since there are 5 chocolate chip cookies than the probability would be

5/10 or 1/2

The probability of picking a chocolate chip cookie is 1/3.

Given that, a box contains 5 chocolate chip cookies, 4 sugar and 6 oatmeal raisin.

What is the probability?

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

We know that, probability of an event = Number of favorable outcomes/Total number of outcomes

Here,

Total number of outcomes =15

Number of favorable outcomes = 5

Probability of an event = 5/15

= 1/3

Therefore, the probability of picking a chocolate chip cookie is 1/3.

To learn more about the probability visit:

https://brainly.com/question/11234923.

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