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
leonid [27]
3 years ago
14

Can someone please explain how to answer #18?

Mathematics
1 answer:
swat323 years ago
4 0
Sorry, what grade is that for? might need to learn that right away
You might be interested in
Please answer and explain.
djyliett [7]

Answer:

x = 13

Step-by-step explanation:

The sum of the exterior angles of a 4 sided polygon is 360

139+ 6x+9x+2x = 360

Combine like terms

139+17x=360

Subtract 139 from each side

17x = 360-139

17x = 221

Divide each side by 17

17x/17 = 221/17

x = 13

8 0
2 years ago
Read 2 more answers
The volume of a cylinder is 480pie cm3. The height of the cylinder is 30 cm. What is the radius of the
guajiro [1.7K]

Answer:

R = 4cm

Step-by-step explanation:

V = π(R)²h = 480π

Divide by π

(R)²h = 480

Substitute h with 30

30*(R)² = 480

Divide by 30

(R)² = 16

Square root

R = 4cm

We do not accept R= -4 because it's a length, so it must be positive.

7 0
2 years ago
An employee works 22 days per month. If they work an average of 8 1/4 hours per day, how many hours do they work per month?
cestrela7 [59]

Answer:

21?

Step-by-step explanation:

idk

5 0
3 years ago
Read 2 more answers
Light travels at 3.0×10^8 kilometers how far does light travel in five minutes
34kurt
Just have a very grate day
8 0
3 years ago
Someone please explain this question PART "b) i" ONLY!!!
Gnom [1K]
<h3>Answer:   (n-1)^2</h3>

This is because we have a list of perfect squares 0,1,4,9,...

We use n-1 in place of n because we're shifting things one spot to the left, since we start at 0 instead of 1.

In other words, if the answer was n^2, then the first term would be 1^2 = 1, the second term would be 2^2 = 4, and so on. But again, we started with 0^2 = 0, so that's why we need the n-1 shift.

You can confirm this is the case by plugging n = 1 into (n-1)^2 and you should find the result is 0^2 = 0. Similarly, if you tried n = 2, you should get 1^2 = 1, and so on. It appears you already wrote the answer when you wrote "Mark Scheme".

All of this only applies to sequence A.

side note: n is some positive whole number.

8 0
3 years ago
Other questions:
  • These numbers in order from greatest to least 0.012 0.100 0.001 and 0.101
    7·1 answer
  • The Ms Jodi has 950 non fiction books. 40% of those books are about science topics and 30% are about history. How many books are
    6·1 answer
  • How much should the minimum household income be
    8·1 answer
  • In circle L, arc MNOP is 120° and the radius is 5 units. Which statement best describes the length of arc MNOP? one half the are
    14·2 answers
  • Find the volume of the cone. Round your answer to the nearest tenth if necessary. Use 3.14 for it.
    7·1 answer
  • Find the next term of the sequence.<br> 24, 17, 10, 3, ...<br><br> -7 <br> 0<br> -4<br> -5
    9·1 answer
  • Given RSW ~ TUW. Which proportion is true​
    12·1 answer
  • I’ll give brainliest
    8·2 answers
  • (i) Factorise the expression x^3 + 3x - x^2 - 3 completely.
    10·1 answer
  • 3850 times a 1.3% interest rate for 6 years
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!