1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fredd [130]
2 years ago
9

How do I show work for -2x-7=3(4x+7)

Mathematics
2 answers:
Alona [7]2 years ago
5 0

Answer:

x=-2

Step-by-step explanation:

-2x-7=3(4x+7)

distribute

-2x-7 = 3*4x +3*7

-2x-7 = 12x+21

add 2x to each side

-2x-7+2x = 12x+2x+21

-7 = 14x+21

subtract 21 from each side

-7-21 = 14x+21-21

-28 = 14x

divide by 14

-28/14 = 14x/14

-2 =x

BARSIC [14]2 years ago
3 0

-2x - 7 = 3(4x + 7)      Distribute/multiply 3 into (4x + 7)

-2x - 7 = 12x + 21       Add 2x on both sides

-2x + 2x - 7 = 12x + 2x + 21

-7 = 14x + 21      Subtract 21 on both sides

-7 - 21 = 14x + 21 - 21

-28 = 14x     Divide 14 on both sides

-2 = x

You might be interested in
Find rhe volume of a cylinder with a diameter of 10 inches and a height of 20 inches
IrinaK [193]
Since the diameter of the cylinder is 10, its radius is half that, or 5, thus

\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h~~
\begin{cases}
r=radius\\
h=height\\
-----\\
r=5\\
h=20
\end{cases}\implies V=\pi (5)^2(20)
7 0
3 years ago
Simplify and she the steps how to solve this <br><br> (5t^2 + 4) - (6t^2 - 7t + 1)
torisob [31]

Answer:

<u>11t² + 7t + 3</u>

Step-by-step explanation:

⇒ (5t² + 4) - (6t² - 7t + 1)

⇒ 5t² + 4 - 6t² + 7t - 1

⇒ <u>11t² + 7t + 3</u>

4 0
2 years ago
Read 2 more answers
I cant figure out the awnser<br>9+10​
o-na [289]

Answer:

I'm sorry I don't have a functioning brain anymore-

<em>but I think it's 21.</em>

<em />

3 0
3 years ago
Read 2 more answers
Anna, Beth and Colleen are softball players. This season, Anne had 65 base hits in 160 at-bats. Beth batting average was 0.399,
zheka24 [161]

Answer:

Anne is the best hitter as she has the best hitting average of 0.406

Step-by-step explanation:

Anne hits 65 bases out of 160 at - bats.

Beth's betting average = 0.399

Collin's hit = 40%

Now, we need to convert all the three hitting rates into same parameters to compare them with each other.

Average hit rate of Anne = \frac{\textrm{Total numberof base}}{\textrm{Total number of  at - bats}}

= \frac{65}{160}  = 0.406

⇒The betting average of Anne = 0.406

Now, The hit - rate of Collin = 40%

Converting the percentage rate into decimal, we get the hit rate of Collin

= \frac{40}{100}  = 0.40

Hence, we get that Hitting Average of :

<u>Anne = 0.406</u>,  Beth = 0.3999 and Collin = 0.400

Hence, from the above data Anne is the best hitter as she has the best hitting average of 0.406.

6 0
3 years ago
Read 2 more answers
Find the value of x in the following triangle, angle A is 3x + 5, angle B is 48 and angle C is 2x +2
Annette [7]

Answer:

1

Step-by-step explanation:

cuz

4 0
3 years ago
Other questions:
  • Frank brought some milk home from the dairy farm. He was able to pour 12 glasses of milk. Each glass held 1/2 pint of milk.
    11·1 answer
  • Decide whether the following statement is true or false. If the degree of the numerator of a rational function equals the degree
    15·1 answer
  • Susie is 4 years old and Cindy is 2 years
    5·2 answers
  • The assumption of homoscedasticity is that _________. the range of the Y scores is the same as the X scores the X and Y distribu
    13·1 answer
  • Consider the probability that no fewer than 74 out of 112 houses will lose power once a year. Assume the probability that a give
    13·1 answer
  • What is -5/8÷9/10=========
    10·2 answers
  • Given points B(−12,2), T(−8,10), A(−7,12), F(−6,10), and G(−2,2), which of the following proves that △BAG~△TAF?
    5·1 answer
  • Please help me, I'm suffering from all of these parallel lines ;9
    13·1 answer
  • Express the following rate as a unit rate. If necessary, round your answer to the nearest tenth. You would enter an answer like
    11·2 answers
  • Name the Solid.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!