All categories

4 years ago

How do you solve the following using a distributive property? 9(1-r)+3r=

Mathematics

1 answer:

tensa zangetsu [6.8K]4 years ago

8 0

Answer:

9-6r

Step-by-step explanation:

Distribute the 9 into the parenthesis:

9(1-r)=9-9r

Add the 3r and combine like terms:

9-9r+3r=9-6r

You might be interested in

What is the slope of the line that contains the points (-1, 2) and (3, 3)?

sweet [91]

Answer:

$\text Slope = \frac{1}{4}$

Step-by-step explanation:

the slope of the line that passes through the points

$\large A\left( x_{1},y_{1}\right) \text{and} \ B\left( x_{2},y_{2}\right)$

$\large \text{slope} =\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

the slope of the line that contains the points (-1, 2) and (3, 3) is :

$\Longrightarrow \text{slope} =\frac{3-2}{3-\left( -1\right) }= \frac{1}{4}$

7 0

2 years ago

I need 18,19,& 20•ignore my writing

Korolek [52]

Answer:

Part 18) Option D 100 square meters

Part 19) Option A 60 cubic meters

Part 19) Option C. 212 cubic centimeters

Step-by-step explanation:

Part 18) Estimate the surface area of the prism

we know that

The surface area of the prism is equal to

$SA=2B+PH$

where

B is the area of the base

P is the perimeter of the base

H is the height of the prism

Find the area of the base B

$B=3.5*7=24.5\ m^{2}$

Find the perimeter of the base P

$P=2*(3.5+7)=21\ m$

we have

$H=2.4\ m$

substitute

$SA=2(24.5)+(21)(2.4)=99.4\ m^{2}$ ----> exact value

Estimate the surface area

we have

$L=3.5=4\ m$ ----> round up

$W=7\ m$

$H=2.4=2\ m$ ----> round down

Estimate the area of the base B

$B=4*7=28\ m^{2}$

Estimate the perimeter of the base P

$P=2*(4+7)=22\ m$

substitute in the formula

$SA=2(28)+(22)(2)=56+44=100\ m^{2}$

Part 19) Estimate the volume of the prism

The volume of the prism is equal to

$V=BH$

we have

$B=3.5*7=24.5\ m^{2}$

$H=2.4\ m$

substitute

$V=(24.5)(2.4)=58.8\ m^{3}$ ----> exact value

Estimate the volume

we have

$L=3.5=4\ m$ ----> round up

$W=7\ m$

$H=2.4=2\ m$ ----> round down

Estimate the area of the base B

$B=4*7=28\ m^{2}$

substitute in the formula

$V=(28)(2)=56\ m^{3}$

Part 20) The volume of the prism is equal to

$V=BH$

we have

$B=6*6.8=40.8\ cm^{2}$

$H=5.2\ cm$

substitute

$V=(40.8)(5.2)=212.16\ cm^{3}$ ----> exact value

Estimate the volume

we have

$L=6\ cm$

$W=6.8=7\ cm$ ----> round up

$H=5.2=5\ cm$ ----> round down

Estimate the area of the base B

$B=6*7=42\ cm^{2}$

substitute in the formula

$V=(42)(5)=210\ cm^{3}$

5 0

3 years ago

if the balance at the end of eight years on an investment of $630 that has been invested at a rate of 9% is $1083.60, how much w

Zielflug [23.3K]

Answer: The interest is $453.60.

The total amount includes principal + interest. The principal was 630 and the total amount was 1083.60.

1083.60 - 630 = 453.60.

Step-by-step explanation:

8 0

4 years ago

Helpppppppppp me plzzzzzzzzzz WILL MARK BRAINLIST if right

Dvinal [7]

Step-by-step explanation:

j=-m+g that's it I just get it

6 0

3 years ago

Help Please Which relations are functions?

Liula [17]

I think its A and D, I'm takeing this 1 right know lol, if you already took it do you remember which were correct?

7 0

3 years ago