I need to know this answer

Mathematics

2 answers:

andreev551 [17]3 years ago

6 0

R+15=4R-6
Collect like terms
Divide both sides by -3

R=7

Free_Kalibri [48]3 years ago

5 0

Answer:

r = 7

Step-by-step explanation:

Given

r + 15 = 4r - 6 ( subtract 4r from both sides )

- 3r + 15 = - 6 ( subtract 15 from both sides )

- 3r = - 21 ( divide both sides by - 3 )

r = 7

You might be interested in

Help help help help math

balu736 [363]

Answer:

A = 192

Step-by-step explanation:

r = 16/2 = 8

A = 3x(8)^2

8^2 = 64

A = 3 x 64 = 192

4 0

3 years ago

Read 2 more answers

A car travels 0.75 miles every minute

Ilya [14]

Answer:

I think you may have forgot to put in the rest of the question mate

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Help answer asap pls ---------

Reika [66]

Answer:

d = 5

Step-by-step explanation:

We want to know what d would be when x = -1, so we can start off by plugging in -1 for x to get the following equation: $\sqrt{8 - (-1)} = 2(-1)+d$ . On the left hand side, 2 negatives become a positive sign, so the -(-1) becomes a +1, and 8+1 would equal 9. On the right hand side, we just multiply 2 and -1 to get -2. So, the equation now looks like this: $\sqrt{9} = d-2$ . We know that $\sqrt{9}$ = 3, so we would get 3 = d-2. THen we would add 2 to both sides to get d = 5. Hope this helps!