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
elena-14-01-66 [18.8K]
3 years ago
7

The question is 7a + 10 = 2a

Mathematics
2 answers:
skelet666 [1.2K]3 years ago
6 0

Answer:

a = -2

Step-by-step explanation:

Subtract 10 from both sides:

7a + 10 - 10 = 2a - 10

Simplify:

7a = 2a - 10

Subtract 2a from both sides:

7a - 2a = 2a - 10 - 2a

Simplify:

5a = -10

Divide both sides by 5 and simplify:

a = -2

Rina8888 [55]3 years ago
4 0

Answer:

A = -2

Step-by-step explanation:

Subtract 10 from both sides:

7a + 10 = 2a -10

Simplify the expression, 7a = 2a - 10

Subtract 2a from both sides next

7a - 2a = 2a - 10 - 2a

Subtract 7a - 2a

5a = -10

5a / 5 = -10/5

a = -2

You might be interested in
Which of the following represents the sentence shown? “Twice a number, n, decreased by six is fourteen.”
Fed [463]
Twice the number n will be expressed as 2n.  So, that will be in our final answer.  In order to decrease the number by 6, we will subtract 6.  So there will be a - 6 in our final answer.  Together, this is 2n - 6, and that is the same as the second option.  So, the second option is the correct one.
8 0
3 years ago
Remember to identify the length, width,
Amiraneli [1.4K]

Answer:

If the prism is trapezoid then you need to find the height and use this formula

1/2 x a+b x h

This has been done below you only need to fill in the height and do the shape for 3cm x 2cm as you haven't been clear in your question.

Volume = 8 x h x 10 = 80 x h cm^3

Hope this helps.

Step-by-step explanation:

Slope triangle prism and or rectangle

The area can be seen either by finding height of the triangle or working out the rectangle and halving the rectangle.

Step-by-step explanation:

Volume

6 x 8 = 48cm^2

48 x 5 = 230cm^2 for double (rectangle prism of 6 x8)

385/2 = 115cm^2 triangle slope prism

---------------

Area first

trapezoid front measures 6,5, 10

1/2 x 6 + 5 x h

=1/2 x 6 + 5 x h

= 8 x h x 10= 80 x h

Volume = 8 x h x 10 = 80 x h cm^3

5 0
3 years ago
Murtaza has a collection of 172 stamps and can place 24 stamps on a page. How many pages does he need?
Sati [7]

Answer:

he needs 7.16 pages

Step-by-step explanation:

172÷24=7.166

3 0
3 years ago
What is the value of x when <br>5 - x = 1/2x + 4​<br><br>A -6<br>B 2<br>C 2/3<br>D 3/2
Marina CMI [18]

C 2/3

Both sides of the equation would be equal to 4 and 1/3

6 0
4 years ago
Absolute value of -8 and 8
iren [92.7K]
It's just 8 and 8 easy
6 0
3 years ago
Read 2 more answers
Other questions:
  • Assignment
    12·1 answer
  • Cookies are sold singly or in packages of 10 or 30. With this​ packaging, how many ways can you buy 60 ​cookies?
    7·1 answer
  • Please simplify 9/3-2i.
    5·2 answers
  • Please help need help asap: Amy drove to her mothers house which was 204 miles away. If it took her 3 hrs, what was her average
    7·1 answer
  • Kyle says 20x10^4 is the same as 20000. He reasoned that since he saw 4 as the exponent he should write 4 zeros in his answer. I
    6·1 answer
  • Find the equation for a line with a slope of 7 and y-intercept of -4
    9·2 answers
  • Find the area of the figure.
    15·2 answers
  • What is the volume of a cone with a diameter of 30 feet and a hight of 60 feet​
    9·1 answer
  • Can someone help with these
    9·1 answer
  • Help asap pls
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!