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
PLZ HEEEEEEEELPPPPPPPP!!!!!!!!!
Elena L [17]
Y= ∛(-x) - 3
for x = -8 → y = ∛-(-8) - 3 ↔ y = 2-3 ↔y = -1
for x= 8 → y= ∛(-8) - 3 ↔ y = -2 -3 ↔ y = -5
Then  - 5≤ y≤ - 1
hence the range of y is {y|-5≤y≤-1}
5 0
3 years ago
A one-topping pizza costs $15.00. Each additional topping costs $1.25. Let x be the number of additional toppings. You have $20
pantera1 [17]
So,

Our total will be equal to 20.  If we want 1 additional topping, we will have an additional $1.25.  <span>If we want 2 additional toppings, we will have an additional $2.50.  So we can just multiply the number of additional toppings by 1.25 to get the additional amount.

1.25x

However, you will have already spent $15.

1.25x + 15 = 20

This is option B.

P.S. You will be able to put exactly 4 additional toppings.</span>
3 0
3 years ago
Read 2 more answers
Fabienne rolls a ball 72 inches across the floor. This is 9 times the distance that Olivier rolls his ball across the floor. Let
RoseWind [281]

Answer:

8 inches

Step-by-step explanation:

Oliver rolls his ball 1/9th of the distance Fabienne rolls his, so just divide 72 by 9 to get your answer.

8 0
3 years ago
Read 2 more answers
Need help please!!!!!!!​
stepan [7]

Step-by-step explanation:m   okay so the answer is 56    x= 56

6 0
3 years ago
C
ElenaW [278]
Hold on let me go do my research I’ll brb .
4 0
3 years ago
Other questions:
  • Ramon plays outfield. In the last game, 15 balls were hit in his deriction. He caught 12 of them. What is the experimental proba
    15·1 answer
  • How is the standard form of a linear equation similar to and different from the slope-intercept form?
    15·1 answer
  • Solve each of the following quadratic equations (x+7)(x+1)=0
    7·1 answer
  • Devaughn is 14 years older than Sydney. The sum of their ages is 110. What is Sydney's age?
    12·2 answers
  • How do you solve (3c)³ - (c - 4d)²; c = -2 AND d = 5
    10·1 answer
  • Use the quadratic formula to solve 2y2 + 6y – 8 = 0.
    15·1 answer
  • How do you simplify 4³​
    8·1 answer
  • How do you write a quadratic function in vertex and standard form
    11·1 answer
  • A "point" is 1% of your borrowed amount on a mortgage. You want to pay 2 points to get a 0.5% reduction in your interest rate on
    11·1 answer
  • I NEED HELP ON THIS SO I CAN PASS
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!