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
Bezzdna [24]
3 years ago
14

How do I solve for X?

Mathematics
1 answer:
ladessa [460]3 years ago
3 0

All the angles should add up to 360°.

8x+10x+9+21x-12+90=360°

Group like terms together.

So,8x+10x+21x+9+90-12=360

39x+87=360

39x=360-87

39x=273

x=7

You might be interested in
The US postal service delivered 7.14 x 1010 pieces of mail in the month of December and 3.21 x 1010 in the month of January. Wha
kupik [55]
The US postal service delivered 7.14 x 1010 pieces of mail in the month of December 7.14 x 1010=7211.4

3.21 x 1010 in the month of January. 3242.1

What is the total mail delivered for these two months?

7211.4
+ 3242.1
__________

10453 .5 TOTAL MAIL
4 0
3 years ago
5y^2-6y-11-6y^2+2y+5
shusha [124]

Answer:

-y² - 4y - 6

Step-by-step explanation:

Step 1: Write expression

5y² - 6y - 11 - 6y² + 2y + 5

Step 2: Combine like terms (y²)

-y² - 6y - 11 + 2y + 5

Step 3: Combine like terms (y)

-y² - 4y - 11 + 5

Step 4: Combine like terms (constants)

-y² - 4y - 6

6 0
3 years ago
A new car purchased for $27,000 loses 15% of its value each year.
Lady_Fox [76]
Multiply 27,000 x .85 (percentage of remaining value after 15% loss) raised to the 5th power (number of years) to get the answer

the value of the car in five years will be <span>$</span>11,980.04
5 0
3 years ago
Read 2 more answers
Hannah is giving her sister a softball for her birthday, and wants to put it in a cubic gift box to preserve the surprise. She w
Inga [223]

Answer:

B. E(s) = s^3 - 29.

Step-by-step explanation:

The amount of empty space E(s) inside the cubic box is equal to the volume of the box minus the volume of the softball.

If the side length of the cubic box is s, and the volume of the softball is 29in^3, then the amount of empty space E(s) inside is

E(s) = s^3-29,

where s^3 is the volume of the cubic box.

Since it matches the equation we got above, choice B stands correct.

4 0
3 years ago
Which composition of similarity transformations map polygon ABCD to polygon A’B’C’D’? Help ASAP PLZZZZ
zmey [24]
The answer to this question is negative and positive
5 0
3 years ago
Read 2 more answers
Other questions:
  • What does v= Bh over 3 for B=36 inches squared. and h=11 inches equal.
    10·1 answer
  • PLEASE someone help me ASAP Please do both questions!!!
    9·1 answer
  • The ratio of the radii of two circles is 4:9. What is the ratio of their circumferences?
    15·2 answers
  • A farmer finds that if she plants 70 trees per acre, each tree will yield 75 bushels of fruit. She estimates that for each addit
    15·1 answer
  • A large university accepts 70​% of the students who apply. Of the students the university​ accepts, 45​% actually enroll. If 30
    14·1 answer
  • Maureen, Frank, Tashia, Zane, Eric, and Wesley are addressing envelopes for volunteer work at a local charity. They were given ¾
    12·1 answer
  • Help please like really quick I will give brainliest (I don’t really know how to spell it) but yeah thanks :)
    13·2 answers
  • In triangle ABC, if b is the longest side, what can you conclude about angle A?
    7·2 answers
  • A painter spends 3 hours working on a painting. A sculptor spends 23 as long working on a sculpture. How long does the sculptor
    6·1 answer
  • Plz guys help I need help
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!