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
PIT_PIT [208]
3 years ago
9

One angle of a triangle has a measure of 66. The measure of the third angle is 57 more than 1/2 the measure of the second angle.

The sum of the angle measures of a triangle is 180. What is the measure of the second angle? What is the measure of the third angle?
Mathematics
1 answer:
alexandr402 [8]3 years ago
8 0
180=66+x+(57+\frac{x}{2})
360=132+2x+114+x
360=246+3x
3x=114
x=38

The second angle is 38deg. The third angle is 76deg.

To check: 66+38+76=180
                          180=180 ---> Checks TRUE.
You might be interested in
Substitute 2m + n =0 and m + 2n =3
melamori03 [73]

There are several ways you can solve this problem if you're trying to solve for m and n. You can substitute, or systems of equations. However, I'm going to use substitution:

2m + n = 0 => n = -2m

We can input that in for the other equation:

m + 2n = 3 now becomes: m + 2(-2m) = 3

Now we can solve:

m + 2(−2m) = 3

m + −4m = 3

(m + −4m) = 3 (Combine Like Terms)

−3m=3

m = -1

Now we can input that value in to solve for n:

We said that n = -2m, and m = -1, so n = -2(-1):Answer:

n = 2

Your final answer is m = -1, and n = 2, which can also be written as (m,n) = (-1,2)

----------------------

However, if you were solving for m+n:

You would add the two equations!:

2m + n = 0

m + 2n = 3

----------

3m + 3n = 3

Now, you can take 3 common:

3(m+n) = 3

m + n = 1

Your final answer for what m + n equals 1!

3 0
3 years ago
What is the value of 4r^2-8 when r=3?
Vlad [161]

Answer:

28

Step-by-step explanation:

So this means to replace the r you see in 4r^2-8 with 3.

Let's do that:

4(3)^2-8

Now to simplify this just use pemdas or a calculator:

4(9)-8     since 3^2 means 3*3=9

36-8

28

5 0
3 years ago
Read 2 more answers
A nail is 0.1875 inch thick. What is it’s thickness as a fraction? Is 0.1875 inch closer to 1/8 inch or 1/4 inch on a number lin
Shtirlitz [24]
It is the same distance apart. .1875-.125 is .0625
1/4 is .25-.1875 is .0625
5 0
2 years ago
Girl runs across Across a rectangle field diagonal covering a distance of 120m if the length of the field is 100m calculate the
Mariulka [41]

Answer:

66m

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
25.7 divided by 1.8
ololo11 [35]
The answer is 14.27 :) correct me if wrong I think I am
7 0
3 years ago
Read 2 more answers
Other questions:
  • Subtract and simplify. Show work please!
    15·1 answer
  • Please help me find the area of shaded region and step by step​
    13·1 answer
  • Please help me someone with this question
    12·1 answer
  • Can someone pls help me this is due in 4 mins
    9·1 answer
  • Solve the following word problems.
    10·1 answer
  • What is an equation of the line that passes through the point (-4,5) and is
    10·1 answer
  • Label ABC with the following information.<br> AB = 35<br> AC = 62<br> Find m/c.
    11·1 answer
  • This is a payslip of Mr. Dube a48 years old male employee of a major clothing company​
    10·1 answer
  • Solve for x please help ! (show work)
    13·2 answers
  • Find the half-life, in days, of Co-60. Round your
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!