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
zaharov [31]
2 years ago
7

Tell whether the angles are complementary or supplementary. Then fir the value of x.

Mathematics
1 answer:
Helga [31]2 years ago
4 0

Answer:

Step-by-step explanation:

4. 10x + 30 = 90

    10x = 60

     x = 6

   complementary

5. 4x + 40 + 3x = 180

   7x + 40 = 180

   7x = 140

    x = 20

   supplementary

You might be interested in
What is the surface area of a cylinder with base radius 4 and height 7?
irina1246 [14]
Plug it into the formula
7 0
3 years ago
The half-life of radioactive cobalt is 5.27 years. Suppose that a nuclear accident has left the level of cobalt radiation in a c
sweet [91]

Answer:

  35 years

Step-by-step explanation:

The proportion p that remains after y years is ...

  p = (1/2)^(y/5.27)

In order for 1/100 to remain (the level decays from 100 times to 1 times), we have ...

  .01 = .5^(y/5.27)

  log(0.01) = y/5.27·log(0.5) . . . take logs

  y = 5.27·log(0.01)/log(0.5) ≈ 35.01 ≈ 35 . . . . years

5 0
3 years ago
The radius of a circle is 6. Using T, which equation expresses the ratio of the circumference of the circle to the circle's diam
Liono4ka [1.6K]

Answer:

Option (B)

Step-by-step explanation:

The given question is incomplete; here is the complete question.

The radius of a circle is 6. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter?

A) C/6 = π

B) C/12= π

C) C = 6πr

D) C = 12πr

Formula to get the circumference of the circle is,

C = 2πr = π × D

Where C = circumference of the circle

D = Diameter of the circle

By dividing with D on both the sides of the formula,

\frac{\text{C}}{\text{D}}=\pi

Since, diameter 'D' = 2r,

\frac{\text{C}}{\text{2r}}=\pi

\frac{\text{C}}{2\times 6}=\pi

\frac{\text{C}}{12}=\pi

Therefore, equation given in Option (B) will be the correct expression.

5 0
3 years ago
Read 2 more answers
I need help pls thank y
otez555 [7]
What do you need help with
5 0
2 years ago
Please help ASAP 10 points
dimulka [17.4K]

Answer:-4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • . Greg placed 32 chairs in the auditorium. There are 8 chairs in each row. Which
    7·1 answer
  • Use interval notation to describe.<br><br> John is at least 26 years old.
    8·1 answer
  • Please help me get the answers. I don't understand it
    12·1 answer
  • Help!!!!!!!!!!!!!!!!!!!!
    10·2 answers
  • How many times does the graph of the function below intersect or touch the x-axis? y=-3x^2+x+4 ...?
    13·2 answers
  • -2/9 - (-3)<br><br><br>I Need Help
    10·1 answer
  • Someone helpe answer this question please
    14·1 answer
  • Lucas is riding his bike to the park which is 2 kilometersfrom his house. When he is one-fourth of the way tothe park, it starts
    8·1 answer
  • For f(x) =1/x^2-3x<br>, substitute 3 for x in the function to solve for f(3)​
    5·1 answer
  • What is it the following a perfect square A49 B121 C75 D64​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!