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
Anna71 [15]
3 years ago
13

Find the value of x.

Mathematics
1 answer:
polet [3.4K]3 years ago
7 0

Answer:

x = 20

Step-by-step explanation:

7x° + (x + 20)° = 180° (linear pair)

Solve for x

7x + x + 20 = 180

Add like terms

8x + 20 = 180

8x + 20 - 20 = 180 - 20

8x = 160

8x/8 = 160/8

x = 20

You might be interested in
Which number replaces the box to make this a true number sentence?
valkas [14]

Answer:

C. 5

Step-by-step explanation:

first expression 5 × (9-3) = 30

second one 45 - 3x

to make it 30 = 30

x should be = 5

8 0
3 years ago
What is the answer for $ 199 MP3 player 15% discount
Irina-Kira [14]
So discount means taken off
we find 15% of 199 and subtract from 199
% means parts out of 100 so 15%=15/100=1.5/10=.15/1=0.15
'of' means multiply
15% of 199=0.15 times 199=29.85
discount so 199-29.85=169.15
answer is $169.15
8 0
3 years ago
Read 2 more answers
A cube has side length of 2m. What is the surface area of the cube?
SVEN [57.7K]

Answer:

24 square meters.

Step-by-step explanation:

The surface area of the cube consists of 6 congruent squares with side length of 2 m.

The are of one such square is

2\cdot 2=4\ m^2.

Hence, the surface area of the cube is

6\cdot 4=24\ m^2.

8 0
3 years ago
Read 2 more answers
4<br> The points (2, r) and (4, -8) lie on a line with slope - 1. Find the missing coordinate r.
maksim [4K]
R=-6


Mark brainliest please


Hope this helps you
6 0
3 years ago
Easy money : Explain how to muliply <br> 4 X 4 <br> 5 X 5<br> and <br> 6 X 6
defon
4 x 4 = 16
5 x 5 = 25
6 x 6 = 36
4 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the diameter of circle j if the circumference is 100.48
    13·1 answer
  • Scale drawing of the electronics board
    10·1 answer
  • What are the equations that represent the cost of each gym as a function of the number of months?
    15·2 answers
  • 170 ÷15 = 15 x ______ = 170
    6·1 answer
  • suppose two different fractions with the same denominators are both less than 1 Can their sum equal 1? can their sum be greater
    11·1 answer
  • Point O is the center of the circle in the diagram. What is m∠BCA ?
    10·1 answer
  • Please help with this
    7·1 answer
  • Slope of the line passing through each pair of points (5,2) and (7,12)
    12·1 answer
  • A rectangular prism with a length of 4 and one-fourth units, height of 2 units, and width of 1 unit.
    9·2 answers
  • Please I just need them labeled by .. SSS,SAS,ASA,HL Triangle Congruence
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!