All categories

2 years ago

2(r+5)-4(r-1)=32 what is the solution?

Mathematics

2 answers:

muminat2 years ago

7 0

Answer:

2r+10-4r+4=32

-2r+14=32

-2r= 32-14

-2r=18

R= -9

Step-by-step explanation:

DanielleElmas [232]2 years ago

7 0

Answer:

r=-9

Step by step explanation:

2(r+5)-4(r-1)=32

Distribute 2 through the parentheses

2r+10-4(r-1)=32

Distribute -4 through the parentheses

2r+10-4r+4=32

Collect like terms

-2r+10+4=32

Add the numbers

-2r+14=32

Move the constant to the right-hand side and change its sign

-2r=32-14

Subtract the numbers

-2r=18

Divide both sides of the equation by -2

r=-9

You might be interested in

2c+17.6 =6 / 4 SOLVE give your answer as a decimal get brainly

tamaranim1 [39]

Answer:

-8.05

Step-by-step explanation:

In order to solve for C you first have to subtract 17.6 from both sides.

2c=(6/4)-17.6

6/4 is 1.5

1.5-17.6=-16.1

2c=-16.1

c=-8.05

8 0

3 years ago

Read 2 more answers

Write the integer that represents the opposite of each situation<br> 100 feet above sea level

Sveta_85 [38]

The answer is 100 m below sea level

6 0

3 years ago

Matt is making a scale model of a building the model is 3.4 feet tall the actual building is 41.848 ft tall.How many times as gr

ikadub [295]

41.848/3.4=12.308

The actual building is 12.306 times larger than the model.

3 0

3 years ago

20. What is the greatest prime factor of 3^7+6^6 ?

mario62 [17]

Answer:

Step-by-step explanation:

3^7 = 2187

6^6 = 46656

46656+2187=48843

Prime factors of 48843: 3, 3, 3, 3, 3, 3, 67

Factor tree:

48843

| \

16281 3

| \

5427 3

| \

1809 3

| \

603 3

| \

201 3

| \

67 3

3 0

2 years ago

Compare the surface area-to-volume ratios of the moon and mars. express your answer using two significant figures.

antoniya [11.8K]

we know that

For a spherical planet of radius r, the volume V and the surface area SA is equal to

$V=\frac{4}{3} *\pi *r^{3} \\ \\ SA=4*\pi *r^{2}$

The
ratio of these two quantities may be written as

$SAV =\frac{(4*\pi*r^{2})}{(\frac{4}{3}*\pi*r^{3})} \\ \\ SAV =\frac{3}{r}$

we know

$rMoon=1,738Km\\ rMars=3,397 Km$

$\frac{SAV Moon}{SAV Mars} =\frac{3}{rMoon} *\frac{rMars}{3} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{rMars}{rMoon} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{3,397}{1,738} \\ \\ \frac{SAV Moon}{SAV Mars} =1.9545$

therefore

the answer is

$1.9$

5 0

3 years ago

Read 2 more answers