Question

Solve the following proportion. (Dieing of Boredom .-.)

r/5 = 9/21

a. r = 9
b. r = 2.14
c. r = 11.66
d. r = 37.8

Answer 1

\(\LARGE\color{blue}{ \frac{r}{5}=\frac{9}{21} }\) cross multiply,


\(\Large\color{blue}{ r \times 21=9 \times 5 }\)

Answer 2

Simplify this expression and solve for x.
Tell me if you need more help.....

Answer 3

you are correct.

Answer 4

2.14 is the correct answer....

Answer 5

In 10 months, 62.6 gallons were used. Find the unit rate.
a. 0.16 gallons/month
b. 10 gallons/month
c. 6.3 gallons/month
d. 626 gallons/month

Answer 6

i was gonna say d. if it had a decimal between 6 and 26

Answer 7

you need the rate per month.
So if in 10 months 62.6 gallons were used then, in 1 month you used 10 times less.

So you divide 62.6 by 10.
(The answer is not there, you will need to round it up to tenths) .

Answer 8

Write the ratio as a fraction in simplest form.
8 out of 10

a. 8/10
b. 5/4
c. 2
d. 4/5