The answer is 12.
Steps
If that number is x
(3+x)/(8+x)=3/4
"Cross multply"
4(3+x)=3(8+x)
12+4x=24+3x
x=12
To check: add 12 to 3 and 8. 3+12=15 and 8+12=20. 15/20=3/4

3 0

3 years ago

Mrs. Goldstein is building a new house. She creates a scale drawing of the house on a piece of paper. The scale is 1cm = 5.5ft.

enyata [817]

Answer:11343.75 feet

Step-by-step explanation:

so you do 15 x 5.5 and then 25 x 5.5 then you times the answers of the two and you get your answer

this should be right.

Hoped this helped

4 0

3 years ago

A box 6 purple marbles, 5 black marbles, and 15 green marbles. Write two different situations; a dependent and independent event

Lerok [7]

The most probable answer if you pull one out would be you pull a green marble.

5 0

2 years ago

Here is a math solve the equation k+ 2 5\8 = 3 Pleas i Neeed help

erastova [34]

$k+2+5/8=3\Rightarrow k=3-2-5/8=1-5/8=3/8$

k=3/8

7 0

3 years ago