Ask question

Ask question

All categories

3 years ago

7

3x+1+5x=7+15+7x what is x?

2 answers:

LenKa [72]3 years ago

3 0

Answer: x=21

Step-by-step explanation:

To solve for x you must first combine you like terms on each side of the equal sign. So you problem will become 8x+1=22+7x. Then get your x on one side and your numbers on the other by taking the one away from the right side and 1 away from 22. Then take away 7 from the left side to cancel it out. Then take 7x away from 8x to leave you with x. making your answer x=21

user100 [1]3 years ago

3 0

Answer:

<h2>x = 21</h2>

Step-by-step explanation:

3x + 1 + 5x = 7 + 15 + 7x <em>combine like terms</em>

(3x + 5x) + 1 = (7 + 15) + 7x

8x + 1 = 22 + 7x <em>subtract 1 from both sides</em>

8x = 21 + 7x <em>subtract 7x from both sides</em>

x = 21

You might be interested in

Can someone explain how to do this?

xenn [34]

Answer:

20 <u>6</u> 12 38

<u>5</u> <u>20</u> 7 <u>32</u>

25 <u>26</u> <u>19</u> 70

8 0

3 years ago

I don't understand word problems can someone please answer it for me and I need it ASAP.

maksim [4K]

Answer:

Inequality: 3 + 1.2c

What you'd put on graph: 1 ≥ 13.50

5 0

3 years ago

Diamonds have a density of 3.5 LaTeX: \frac{g}{cm^3}g c m 3. How big is a diamond that has a mass of 0.10 g?

liubo4ka [24]

For this case we have that by definition, the density is given by:

$d = \frac {M} {V}$

Where:

M: It is the mass of the diamond

V: It is the volume of the diamond

According to the data of the statement we have:

$d = 3.5 \frac {g} {cm ^ 3}\\M = 0.10 \ g$

So the volume is:

$V = \frac {M} {d}\\V = \frac {0.10 \ g} {3.5 \frac {g} {cm ^ 3}}\\V = 0.02857\\V = 0.03 \ cm^3$

Thus, the volume of the diamond is approximately $0.03 \ cm ^ 3$

Answer:

$0.03 \ cm ^ 3$

3 0

3 years ago

What is the slope of a line that is perpendicular to 3x+2y=14

djyliett [7]

Answer:

2/3

Step-by-step explanation:

7 0

3 years ago

A drop of oil makes a circular ring in a water puddle. The radius of the oil ring expands at 1.5 cm per second. If r(t)=1.5t and

Readme [11.4K]

Answer:

$a(t) =n(0.25t^2)$

Step-by-step explanation:

Given

$r(t) = 0.5t$

$a(r) = nr^2$

Required

Determine the area in terms of time

From the question, we have:

$r(t) = 0.5t$ -> radius per time

and

$a(r) = nr^2$ --> area from radius

The interpretation of the question is to find the composite function: a(t)

If $a(r) = nr^2$ , and $r(t) = 0.5t$ , the

Substitute 0.5t for r

$a(t) =n(0.5t)^2$

$a(t) =n*0.25t^2$

$a(t) =n(0.25t^2)$

5 0

3 years ago