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
Black_prince [1.1K]
3 years ago
11

twice the sum of a number and 8 is equal to 3 times the difference of the number and 7 find the number ​

Mathematics
1 answer:
GaryK [48]3 years ago
4 0
The answer should be 37



2(x+8) = 3(x-7)

distribute
2x+16 = 3x-21

Subtract 2x from both sides
2x+16-2x = 3x-21-2x
16 = x-21

Add 21 to both sides
16+21 = x-21+21
You might be interested in
How do you make millimeters to meters?
Zepler [3.9K]
You have to multiply by 1000
7 0
3 years ago
Read 2 more answers
A rope 33cm long has a mass of 561g. What is the mass of 13cm of this rope?
Digiron [165]

Answer:

221g

Step-by-step explanation:

561g divided by 33cm is how much 1 cm of rope would be so then you multiply that amount by 13

8 0
4 years ago
27,643,087 round to the nearest million
Maksim231197 [3]
If the number before the place you are rounding to is a 5 or more you round up but if it is a 4 or below it stays the same so the answer is 28,000,000
4 0
3 years ago
3x - y = 7<br> y = 2x - 2
____ [38]

Answer:

x = 9

Step-by-step explanation:

1) Subsitute! You have to replace y with 2x - 2 in 3x -y = 7, b/c they already gave you the equation for y (in the second part: y = 2x - 2)

 So, your equation would look like this : 3x - (2x - 2) = 7

3) Solve suing PEMDAS!

There's a negative outside the parenthesis of 2x -2 -> - (2x-2). Multiply the negative individually inside the parenthesis so you will get (-2x + 2)

3x - 2x - 2 = 7    subtract the same variable; x

1x - 2 = 7            you don't need to put 1 to x, only if you want!

    + 2  + 2           add 2 on both sides

x = 9

5 0
3 years ago
What is the average of 766 and 878
docker41 [41]
If you would like to find the average of 766 and 878, you can calculate this using the following steps:

766 + 878 = 1644
1644 / 2 = 822

The correct result would be 822.
4 0
4 years ago
Read 2 more answers
Other questions:
  • To determine the number of trout in a lake, a conservationist catches 120 trout, tags them and throws them back
    15·1 answer
  • Find the first six terms of the sequence.
    6·1 answer
  • What is a part of Earth's surface that has a certain shape and formed naturally.
    14·2 answers
  • If one pound is the same weight as 16 ounces, how many ounces equal 3.5 pounds? (Only input whole numbers)
    5·2 answers
  • Hellplppppppp800x40÷80=
    10·2 answers
  • PLS HELP WILL MARK YOU BRIANLIEST
    15·2 answers
  • PLZ HELP ME
    11·1 answer
  • How is solving inequalities with multiplication and division similar to solving equations with multiplication and division?
    6·2 answers
  • Help!!! I have an math exam today can someone help me with it? I'll give you 140 points its only 20 questions!!
    12·1 answer
  • 5.2/3 of the students love Nearpod. Out of that group 1/5 of them love virtual school. What fraction of the students love virtua
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!