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
KiRa [710]
3 years ago
10

What is the Value of x?

Mathematics
2 answers:
satela [25.4K]3 years ago
8 0

\text{It's an isosceles triangle. Therefore}\ m\angle C=m\angle A:\\\\9y-3=69\qquad\text{add 3 to both sides}\\\\9y=72\qquad\text{divide both sides by 9}\\\\\boxed{y=8}\\\\\text{We know: The sum of the measures of the angles of a triangle is 180}^o.\\\\\text{Therefore we have the equation:}\\\\m\angle A+m\angle B+m\angle C=180^o\\\\\text{Substitute}\ m\angle A=m\angle C=69^o:\\\\69+(5x+2)+69=180\\\\138+5x+2=180\\\\140+5x=180\qquad\text{subtract 140 from both sides}\\\\5x=40\qquad\text{divide both sides by 5}\\\\\boxed{x=8}

Answer:\ \boxed{\boxed{x=8}}

Ronch [10]3 years ago
7 0

Answer:

x=8

Step-by-step explanation:

Since this is an isosceles triangle <A is equal to <C

<A = <C = 69

<A+ <B +<C = 180  because the 3 angles of a triangle add to 180 degrees.

69 + 5x+2 + 69 = 180

Combine like terms

140+ 5x = 180

Subtract 140 from each side

140-140 +5x =180-140

5x = 40

Divide by 5

5x/5 =40/5

x=8


You might be interested in
What is the quotient 931/4?
lianna [129]

Answer:

here's a photo of the calculator to that question

3 0
2 years ago
The number of primes between 90 and 100
ioda
Answer 97 because the answer is already above

Pls mark brainliest

3 0
3 years ago
PLZZZZZZZZZZZZZZZZZZZZZZ HELP!<br><br> -3x+4=-2 show your work!!!
Katyanochek1 [597]

Answer:

x=2

Step-by-step explanation:

5 0
2 years ago
The volume of cube is 343 cubic centimeters.What is the suface area of the cube
Ann [662]
The cube root of 343 is 7.
One side has an area of 7*7 = 49 square cm
There are 6 sides to a cube
6 * 49 is the surface area = 294
7 0
3 years ago
Please tell me what this is (correct answer)
Kamila [148]

Answer:

3.17

Step-by-step explanation:

0.45x + 0.72 + 5x = 18

5.45x = 17.28

x = 3.17

6 0
3 years ago
Other questions:
  • A spherical water tank holds 7500 feet^3 of water. what is the diameter?
    5·1 answer
  • the probability it will rain tomorrow is 1/2. the probability that our team will win tomorrrow's basketball game is 3/5. which e
    12·1 answer
  • Find out <br><img src="https://tex.z-dn.net/?f=%20%7B5%7D%5E%7B10%7D%20%2B%20%20%7B8%7D%5E%7B3%7D%20" id="TexFormula1" title=" {
    13·1 answer
  • There were 6 girls and 18 boys in Mrs.Jonhsonś math class, Write the number of girls as a fraction of the number of boys. Then w
    8·1 answer
  • Use set builder notation to represent the following set. {... -3, -2, -1, 0} {x | x Z, x ≤ 0} {x | x N, x ≤ 0} {x | x R, x ≤ 0}
    11·1 answer
  • Helpp, since this question is a bit hard, ill give brainliest and 20 pts.
    12·1 answer
  • Combine like terms (2+7x)(2-7x)=
    7·1 answer
  • Find the slope of ( 3,7 ) ( 4,10 )
    14·1 answer
  • A convex polyhedron has faces that consist of 5 congruent squares and 4 congruent equilateral triangles. The
    15·1 answer
  • During his shift, Damion filled 8 orders in 30 minutes. If he keeps up that rate, how many orders will he fill in 7 hours?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!