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
Ronch [10]
4 years ago
15

The angles of a triangle are 128, 5x+10 and 9x. What is the value of x?

Mathematics
2 answers:
Advocard [28]4 years ago
5 0
Angles in a triangle total 180°

180=128+5x+10+9x
180-128-10=5x+9x
42=14x
x=3
Naddika [18.5K]4 years ago
3 0

Answer:

The value of x is 3.

Step-by-step explanation:

It is given that the angles of a triangle are 128, 5x+10 and 9x.

According to the angle sum property of a triangle, the sum of all interior angles of a triangle is 180 degrees.

128+5x+10+9x=180

138+14x=180

14x=180-138

14x=42

Divide both sides by 14.

x=3

Therefore the value of x is 3.

You might be interested in
What is the length of BC¯¯¯¯¯ ? Enter your answer in the box.
statuscvo [17]

Answer:

BC = 24

Step-by-step explanation:

Isosceles triangle because <C = <B so AC = AB

Plug in to find x

3x - 15 = x = 33

2x = 48

 x = 24

BC = x = 24

3 0
3 years ago
Simplify -4(2c+3) pleaseeeee
ale4655 [162]

Answer:

-8c -12 =0

-8c = 12

c = - 12/8 = -3/2

3 0
3 years ago
The diameter of Circle terminates on the circumference of the circle at​ (3,0) and (3,−7).. Write the equation of the circle in
Verdich [7]

Step-by-step explanation:

that means the center of the circle is exactly in the middle between the 2 points.

and since both points have the same x value (so, the diameter here is a vertical line), it is ready to get the y value of the middle : (-7 - 0) / 2 = -3.5

so, the coordinates of the center are (3, -3.5).

and that makes the standard circle equation

(x - h)² + (y - k)² = r²

to

(x - 3)² + (y + 3.5)² = 3.5² = 12.25

as h, k are the coordinates of the center, and r is the radius (half the diameter).

7 0
2 years ago
8TH GRADE MATH!!!! CAN SOMEONE PLEASE HELP I'LL GIVE BRAINLIEST !!!!
Basile [38]

Answer:

where the img

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Simplify the expression<br> -4x – 7+3 – 8x
julia-pushkina [17]

Answer:

-12x - 4

Step-by-step explanation:

if you can please mark brainlyist

5 0
3 years ago
Read 2 more answers
Other questions:
  • A bag has 6 blue marbles and 6 green marbles. Half of the green marbles are made of plastic. A marble is selected at random from
    6·2 answers
  • Label from least to greatest 1/3, 5/6, 1/8, 7/12
    10·1 answer
  • Help plz! What is 823*25/h + 568 I'm so confused. If someone could help me that would be great thx! &lt;3
    15·1 answer
  • The length of a rectangle exceeds three times its width by 9 if the perimeter is 66 find the width of the rectangle?
    5·1 answer
  • What is the difference between the temperatures at 10 a.m. and 3:30 p.m.? Indicate whether the change is an increase or decrease
    7·1 answer
  • Find a polynomial of the specified degree that has the given zeros. Degree 4; zeros −1, 1, 4, 5 P(x) =
    12·1 answer
  • You are buying shoes online. The selling price is $29.99. The sales tax is 6.5% What is the total cost? Round to the nearest pen
    14·2 answers
  • A quantity with an initial value of 850 grows continuously at a rate of 90% per
    11·1 answer
  • Patrick, Hall, Belvedere, and Shaq collect posters. Patrick has 60
    6·1 answer
  • Write 110% as a mixed number in simplest form.<br><br> 110% = $$
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!