3 years ago

Solve each proportion 2/r=12/18

Mathematics

2 answers:

nexus9112 [7]3 years ago

6 0

Answer:

r = 3

Step-by-step explanation:

starting with

2 / r = 12 / 18. we cross multiply

18 * 2 = 12 * r

36 = 12 * r

and divide by 12 to isolate "r"

36 / 12 = r

Then r = 3

kolezko [41]3 years ago

3 0

I was going to answer but so

You might be interested in

I need help for number 7 please

iVinArrow [24]

Answer:

6/8

Step-by-step explanation:

there are 8 marbles take away how many green to solve the question...I know this is a horrible explanation sorry

8 0

4 years ago

The sum of three numbers is 141. The first number is 9 more than the third. The second number is 4 times the third. What are the

Advocard [28]

Answer:

x...third number

4x...second number

x-9...first number

(x)+(4x)+(x-9)=141

x+4x+x-9=141

6x-9=141

Let's add 9 to both sides...

9+6x-9=141+9

6x=150

Let's divide both sides by 6...

(6x)/6=150/6

x=25

third number...25

second number...(4)(25)=100

first number...(25-9)=16

Let's check our work...

25+100+16=141

141=141

6 0

3 years ago

Please help!<br><br> thank u!

Sav [38]

Answer:

Step-by-step explanation:

4 0

3 years ago

Solve for x<br><br> x^2 - 30x = -125

enot [183]

X = 25,5

I hope this helps you. :)

8 0

3 years ago

P(AB)

Anna71 [15]

The answer is 10/1
There are 10 boys and 1 of them is a sophomore

4 0

3 years ago