All categories

2 years ago

-3r + 18 = 15r please help!!

Mathematics

2 answers:

Luba_88 [7]2 years ago

8 0

Answer:

r = 1

Step-by-step explanation:

Step 1: Write equation

-3r + 18 = 15r

Step 2: Solve for r

Add 3r to both sides: 18 = 18r
Divide both sides by 18: 1 = r
Rewrite: r = 1

Step 3: Check

Plug in r to verify it's a solution.

-3(1) + 18 = 15(1)

-3 + 18 = 15

15 = 15

VLD [36.1K]2 years ago

7 0

Step-by-step explanation:

- 3r - 15r = -18 .... Moved variables to one side and constants to the other

- 18r = - 18 ..... Simplified

r = 1 ..... Divided to isolate the r

Check:

Plug in 1 for r

-3(1) +18 = 15(1)

- 3+18 = 15

15 = 15 .... Therefore 1 is correct

Answer is 1

Hope this helps!

You might be interested in

What is the value of the growth factor of the function? A) 1/5 B) 1/3 C) 2 D) 6

ICE Princess25 [194]

Answer:

Step-by-step explanation:

Divide 18 by one third and see what ya get

then 6, then 2. BOOM!

7 0

3 years ago

mestny [16]

Answer:

12... If there is an even ratio between the two, then there is an even amount, so you divide 24 by 2 and you have 12 chocolate and 12 vanilla cupcakes in the Grande box.

Step-by-step explanation:

It izz wat it izzzz!!!

:)

5 0

3 years ago

Read 2 more answers

Taylor does jumping jacks at a rate of 50 jumping jacks per minute. If Taylor completes her jumping jacks at a constant rate and

Viktor [21]

Answer:

3 minutes

Step-by-step explanation:

150/50

3 0

3 years ago

I need help with numbers 20,21,and22

julsineya [31]

Answer:

20) the answer is -43

21) the answer is 25

22)the answer is -5

Step-by-step explanation:

20) $\frac{p(p+n^{2})}{6}$

n=-7

p=-6

we have:

$\frac{-6*(-6+(-7)^{2})}{6}\\\\\frac{-6*(-6+49)}{6}\\\\\frac{-6*(43)}{6}\\\\\frac{-258}{6} \\-43$

21) mp-(p-(m-n))

m= -1 n=-6 p=-10

-1*-10-(-10-(-1-(-6)))

10-(-10-(5))

10-(-15)

10+15=25

22) $m-\frac{m+m}{2} - n$

m=1 n=5

1- $\frac{1+1}{2} -5$

1- 2/2 -5

1-1-5 =-5

6 0

3 years ago

Let ∠D be an acute angle such that cosD=0.33. Use a calculator to approximate the measure of ∠D to the nearest tenth of a degree

tia_tia [17]

Answer:

Step-by-step explanation:

.33 rounded equals .3

6 0

3 years ago

Read 2 more answers