25)There are 200 students in 6th period lunch. The ratio of 7th graders to 8th graders is 4 to 5. What percent of the students are 7th graders?A) 44
B) 55 9%
C) 89%
D) 80%

Answers

Answer 1

Answer: There are 200 students in 6th period lunch.
The ratio of 7th graders to 8th graders is 4 to 5.
Let's find the percentage of the students are 7th graders:
=> 200 / 9 = 22.22
=> 22.22 * 5 = 111.11 or 111
=> 22 * 4 = 88.88 or 89
=> 4 : 5 or 89 : 111
7th grader = 55%

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The volume of a rectangular prism is 270 cubic centimeters. The height of the prism is 5 centimeters. What should the length and width of the prism be? Explain your solution strategy.

7+(8+12)=____+12? Which property was used?

Answers

I know the number ypu have to fill in would be 15 I believe that is the commutative or associative property or something with addition

If is distributive property

30% of ____ is 90. Enter the unknown value that makes this statement true

Answers

300 is the unknown value you're looking for.

°° Why?

Great question! Let's find out! ↓ ↓ ↓

If 90 ÷ 3 = 30, then multiply 30 by 10, which makes 300 to get your answer. It makes perfect sense, doesn't it? :)

So, just fill in the blank!

30% of 300 is 90.

HAHA! We figured it out!

↑ ↑ ↑ Hope this helps! :D

So 90 divided by 3 is 30 so you multiply 30 by 10 and get 300. The answer is 300 in other words

TOVOU, V V VI VIOLIIV VYVIScore: 0.67 of 1 pt
% 6.4.20
LMNP is a rectangle. Find the value of x and the length of each diagonal.
LN = 5x + 19 and MP = 8x - 8
x=0

Answers

Question:

LMNP is a rectangle. Find the value of x and the length of each diagonal.

LN = 3x + 1 and MP = 8x – 4

Answer:

Value of x = 9, Length of LN = 64, Length of MP = 64

Solution:

Given LMNP is a rectangle. LN and MP are diagonals.

LN = 5x + 19 and MP = 8x – 8

Diagonals of a rectangle are equal in length.

⇒ LN = MP

⇒ 5x + 19 = 8x – 8

Combine like terms together.

⇒ 19 + 8 = 8x – 5x

⇒ 27 = 3x

Divide by 3 on both sides of the expression, we get

⇒ x = 9

The value of x is 9.

To find the length of the diagonals.

LN = 5(9) + 19

= 45 + 19

LN = 64

MP = 8(9) – 8

= 72 – 8

MP = 64

Length of LN = 64 and the length of MP = 64.

A right triangle has an area of 50 square inches. If the triangle is an isosceles triangle, what are the lengths of the legs of the triangle?

Answers

area=1/2bh
50=1/2bh
times 2
100=bh
solve for b
divide by h
100/h=b
we hav to make a drawing
since it is isocoleese
h=b
100=b^2=h^2
h=b=10
answer is 10 inches

10in and 10in, because 10x10=100, and 100/2=50

Kevin drove 22 1/2 miles in 1/3 hour. What was his average speed in miles per hour

Answers

Answer=67.5 mph

22 1/2 miles 1/3hours

(22 1/2)/(1/3)=67.5miles per hour

____________________________
another way to solve this would be....

1/3 1
_______=________
22 1/2 x

cross multiply
(1/3)x=22 1/2
divide both sides by 1/3
x=67.5miles per hour

Which equation is the equation of this line A. f(x)= -2/3x - 2

B. f(x)= -3/2x + 2

C. f(x)= -3/2x - 2

D. f(x)= 3/2x -2