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
kipiarov [429]
2 years ago
15

In Triangle A B C, what is the value of x? Triangle A B C. Angle A is (10 x minus 10) degrees, angle B is (8 x) degrees, angle C

is (10 x + 8) degrees. 5.5 6.5 55 65

Mathematics
2 answers:
Jlenok [28]2 years ago
7 0

Answer:

x = 6.5

Step-by-step explanation:

In a triangle, the sum of the measures of the angles equals 180 deg.

8x + 10x - 10 + 10x + 8 = 180

28x -2 = 180

28x = 182

x = 6.5

mr_godi [17]2 years ago
4 0

Answer:

x = 6.5

Step-by-step explanation:

The sum of the angles of a triangle is 180

8x+ 10x-10 + 10x +8 = 180

Combine like terms

28x -2 = 180

Add 2 to each side

28x-2+2 = 180+2

28x=182

Divide by 28

28x/28 = 182/28

x =6.5

You might be interested in
PLS HELP I WILL GIVE BRAINLIEST
pochemuha

Answer:

there's no question

Step-by-step explanation:

....

7 0
2 years ago
A rectangle is 18 inches long and 9 inches wide. Find it’s area.
galina1969 [7]

Answer:

162 square inch

Step-by-step explanation:

Area = Length * Width

Area = 18*9=162

4 0
3 years ago
If Kevin wants a 90 average in math after 5 tests and his first 4 tests are 76, 92, 89 and 97 what does he need on the fifth tes
Keith_Richards [23]
You need to understand that you're solving for the average, which you already know: 90. Since you know the values of the first three exams, and you know what your final value needs to be, just set up the problem like you would any time you're averaging something.
Solving for the average is simple:
Add up all of the exam scores and divide that number by the number of exams you took.
(87 + 88 + 92) / 3 = your average if you didn't count that fourth exam.
Since you know you have that fourth exam, just substitute it into the total value as an unknown, X:
(87 + 88 + 92 + X) / 4 = 90
Now you need to solve for X, the unknown:
87
+
88
+
92
+
X
4
(4) = 90 (4)
Multiplying for four on each side cancels out the fraction.
So now you have:
87 + 88 + 92 + X = 360
This can be simplified as:
267 + X = 360
Negating the 267 on each side will isolate the X value, and give you your final answer:
X = 93
Now that you have an answer, ask yourself, "does it make sense?"
I say that it does, because there were two tests that were below average, and one that was just slightly above average. So, it makes sense that you'd want to have a higher-ish test score on the fourth exam.
4 0
3 years ago
Read 2 more answers
R - 15 = 77<br> I need to show my work
Dmitrij [34]

Answer:

R - 15 = 77

R = 77 + 15

R = 92

4 0
2 years ago
Read 2 more answers
I need help with finding slopes from two points thank you
otez555 [7]

Answer:

i do believe the answer is 6/7

7 0
3 years ago
Other questions:
  • What is the interquartile range for team b?
    5·1 answer
  • Find the derivative
    14·1 answer
  • Daniel spent a day hiking through a wildlife preserve. During the first hour of the hike, he drank 2 13/10 liters of water. writ
    12·1 answer
  • The length of one side of a cube is 9.5•10^-4m. What is the volume of the cube?
    13·1 answer
  • this week mr wooten spent $30 for hot dogs and supplies. he earned $18. did he make money or did he loose money this week
    9·1 answer
  • Factor the polynomial by its greatest common monomial factor.
    15·1 answer
  • If f(x)=x^2-x and g(x)=x+1, determine f (g(x)) in simplest from
    8·2 answers
  • The graph shows four points on the line and the triangles resulting from sketching on the rise and run from one point to the nex
    7·1 answer
  • Complete the statement with always, sometimes, or never.
    5·2 answers
  • How is a circumference related to an arc
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!