There are 7 more girls than boys in an 8th grade class. There are a total of 53 students in this 8th grade class. How many girls are in this 8th grade class?
A. 17
B. 21
C. 27
D. 30​

Answer:

t=7

Step-by-step explanation:

N=45

find t

45=t^2-t/2

0=t^2-t/2-45

use the quadratic formula

t=6.96~=7

Answer:

Step-by-step explanation:

45 = t2 - t/2

45 = 30(2) - 30/2

45 = 60 - 15

45=45

Answer:

73 % for the right square, 173% if you need to add both squares together

Step-by-step explanation:

each block is 10, and whole is equal to 100%

Answer:

A.4

Step-by-step explanation:

The diameter of the bigger circle is 14

You first subtract 6 from 14 which is 8

8 is the diameter of the smaller circle the radius is 4

your answer is A.

Answer:

the pic is blank we can't see

Step-by-step explanation:

Answer:

-20x+15

Step-by-step explanation:

You use foil method so you distribute it and it becomes -5*4x amd -5*-3 so it would be -20x+15

-5 x 4x=-20x and -5x x -3 = +15

-20x+15 is the answer

Answer:

Step-by-step explanation:

To find the area of a quarter circle, find the area of the whole circle by using the formula A = pi * r^2 and then divide by 4. To find the perimeter of the quarter circle, find the circumference of the whole circle, divide by 4, and then add the radius twice.

Answer: [tex]\frac{\pi *r^{2} }{4}[/tex]

Step-by-step explanation:  We know that the formula for the area of a whole circle is πr². A quarter circle is one-fourth of a circle, so if we divide the area of the whole circle into four, we can find the area of the quarter circle: [tex]\frac{\pi *r^{2} }{4}[/tex]

Answer:

21.42ft

Step-by-step explanation:

a²+b²=c² where "c" is the hypotenuse of a right triangle and "a" and "b" are the two other sides

now let's plug in the values

21²+b²=30²

b²= 30² - 21²

b²= 459

b= 21.42

Answer:

Quadratic formula

Step-by-step explanation:

You can use the quadratic formula to find solutions for quadratic equations.

Answer:

12 cubes

Step-by-step explanation:

If the total volume of the box is 24 cm³ and the volume of each cube is 1 cm³ then that means that 24 total cubes can fit perfectly inside the box. Since there can only be two layers of cubes then we simply need to divide the total amount of cubes that will fit in the box by 2 to find the number of cubes in each layer...

24 / 2 = 12 cubes

Finally, we can see that each layer within the box will contain 12 cubes

Answer:

y=1/2x-2

Step-by-step explanation:

2y=-4+x

2y=x-4 divide both sides by 2

y=1/2x-4/2

y=1/2x-2

Answer:

[tex]y = 0.5x - 2[/tex]

Step-by-step explanation:

Slope intercept form is

[tex]y = mx + b[/tex]

Our initial goal is to isolate y.

[tex]2y - x = -4[/tex]

Add x to both sides of the equation.

[tex](2y - x) + x = (-4) + x[/tex]

Simplify.

[tex]2y =x -4[/tex]

Divide both sides by 2.

[tex]\frac{2y }{2} = \frac{(x - 4)}2}[/tex]

Simplify.

[tex]y = 0.5x - 2[/tex]

Answer:

AAS

................................

Answer:

AAS

Step-by-step explanation:

i took the quiz rn

Answer:c

Step-by-step explanation:

Answer:

(3x-16)(2x+15)=0

Answer:

336

Step-by-step explanation:

trus

Answer:

336 in³

Step-by-step explanation:

8 x 7 x 6 = 336 in³

Also the volume will double

Answer:

3. 25

4. 22

5. 14

6. 12

7. 45

Step-by-step explanation:

12x4=40+8

20-12=2x4

25-4=3x7

4x9=31+5

16+12=7x4

38-5=3x11

6x7=46-4

Answer:

31.68d + 8.8

Step-by-step explanation:

We have to simplify the expression but with one dillemma. The number 8.8 is outside the parenthesis of 3.6d + 1 and 3.6d + 1 aren't combinable because they aren't like terms.

When we have a problem like 8.8 being out of the parenthesis, we need to distribute 8.8 to both numbers in the parenthesis, or in other terms multiplying.

(8.8 * 3.6d + 1 * 8.8)

31.68d + 8.8

Answer:

y = 5 ; x = 4

Step-by-step explanation:

Given :

5x + 6y = 50 - - - (1)

x - 6y = -26 - - - (2)

From (2)

x = - 26 + 6y

Put - 26 + 6y for x in (1)

5(-26 + 6y) + 6y = 50

-130 + 30y + 6y = 50

-130 + 36y = 50

-130 - 50 = - 36y

-180 = - 36y

y = 180 / 36

y = 5

Put y =5 in x = - 26 + 6y

x = - 26 + 6(5)

x = - 26 + 30

x = 4

y = 5 ; x = 4

Answer:

2 < x <_ 3.5

Step-by-step explanation:

First, find the value of x by writing it as an equation. Then, use 0 as x to determine the correct inequality.

Answer:

a

Step-by-step explanation:

both the end points are around the same number

Answer:

2/5 is greater than 1/4

so ms. potts washed most of the laundry

Answer:

602.88 cu ft.

Step-by-step explanation:

V = Bh where B is the area of the base, which is a circle in your problem.

Since the diameter is 8, the radius is 4.

So, B = [tex]\pi r^{2} = 3.14(4^{2} ) = 3.14(16) = 50.24[/tex]

V = Bh = 50.24(20) = 1004.8 cu ft = total volume of tank

60% of that volume is .60(1004.8) = 602.88 cu ft.

Answer:

1. Yes the parentheses are necessary. To find a fourth of her regular hours you must find the total amount she works during her regular hours.

2. 6

Step-by-step explanation:

(For the second question)

4+8= 12

12 × ½ = 12 ÷ 2

12÷2 = 6

Answer:

14.96 is the area of the triangle

Answer:

Decimal - 0.19 Fraction - 19/100

Step-by-step explanation:

Answer:

Decimal: 0.19

Fraction: 19/100

Step-by-step explanation:

19% means that there is 19/100 which is also 0.19 as a decimal. I dont really know how to explain this but can you please mark as brainliest?

Answer:

d i have done this before

Step-by-step explanation:

Answer:

It is B

Step-by-step explanation:

If im wrong sorry but i got big brain :0

Step-by-step explanation:

28 days. it'll be Emily's 7th visit and Scotts 2nd.

28 is the lowest common factor

Answer:

it would be 128 because 8 divded 2 is 4. 4 is the number of cereal boxes now multiply 4 x32 which would be 128

Answer: A

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

For one scientific notation will not work with negative exponents therefore we can eliminate answer choices A and D

Secondly scientific notation usually has a decimal

Answer choice c does not have a decimal point leaving us with answer choice B