Question

These are the questions from my recent one I jus posted.

Answer the ones you know, leave the ones you dont:) apreciate your help!


5. Solve the following proportion.
X /12= 48/144
A. x=3
B.x=4
C.x=8
D.x=9


6) Solve the proportion using
cross multiplication.
15/5=x/6
A X=2
B X= 12.5
C x=18
D X= 450



7) Solve the proportion using
cross multiplication.
26/ x = 17/51
A. x=189
B. x=78
C. x=33
D. x=9

8) Solve the proportion using
cross multiplication.
x/14=9/3
A. x=13
B.x=14
C. x=23
D. x=39


9) in a recipe for waffles, you need 1 1/2 cups of flour. the recipe serves 5 people. you need to make waffles for 20 people, how much flour do you need??

A. 4 cups
B. 6 cups
C. 7.5 cups
D. 20 cups


10) for art class, you are making a model of a house. A real house has a length of 52 feet and Werth of 28 feet. your model has a length of 13 inches. what will the width be?

A. 6 in
B. 7 in
C. 9.5 in
D. 16 in
​

Answer 1

5. B x=4

6. C x=18

7. B x=78

8.

9. 6 cups

10. B 7 in

Explanation:

5. X /12= 48/144

You can simplify the fraction 48/144 by diving both numerator and denominator by 12.

(48/12)/(144/12)=4/12

So, x/12=48/144 is same as

x/12=4/12

So, x=4

6)

15/5=x/6

Cross multiply

5x=15*6

5x=90

x=90/5

x=18

7) 26/ x = 17/51

17x=26*51=1,326

x=1326/17

x=78

8)

x/14=9/3

Cross multiply

3x=14*9=126

x=126/3=42

9)

1 1/2 cups is 3/2 cups

5/(3/2)=20/x

Cross multiply

5x=20*(3/2)=10*3=30

x=30/5=6 cups

10)

52/28=13/x

x=(28*13)/52=7 inches