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
Novosadov [1.4K]
3 years ago
15

Formula for the sum of angles of a triangle: A+B+C=180 degrees, for C

Mathematics
1 answer:
nevsk [136]3 years ago
5 0
A + B + C = 180
<span>C = 180 - A - B </span>

You might be interested in
3x^2 -5x -2=0
Kipish [7]

Answer:

Step-by-step explanation:

1. Find two numbers that add to make the coefficient of x (in this case, -5) and that multiply to make the constant term multiplied by the coefficient of x^2 (in this case, -2 x 3 = -6)

Two numbers that work are -6 and +1

-6 x +1 = -6

-6 + -1 = -5

2. Split the middle term into the two numbers that you found.

3x^2 -6x +x -2 = 0

I've put the -6 on the left side because in our next step, when we factorise, it will be easier than having the numbers the other way around.

3. Factorise the left side by taking out common factors from each pair. The pairs I'm talking about here are '3x^2 and -6x', and 'x and -2'

3x (x-2) +1 (x-2) = 0

4. You now have two numbers both being multiplied by the term x-2. We can rearrange this equation to give us two brackets being multiplied by each other.

(3x + 1) (x-2) = 0

5. According to the Null Factor Law, if two terms are multiplied together and the result is 0, then one of those terms must be 0. Make both terms equal to 0 and solve each for x.

3x + 1 = 0              x-2 = 0

3x = -1                   x = 2

x = -1/3

6. The solutions to this equation are x = 2 and x = -1/3

6 0
3 years ago
Read 2 more answers
In a seminar of 1200 people, 65 percent were women, How many men were in the seminar?
Nookie1986 [14]

Answer:

420

Step-by-step explanation:

If there were 1200 people, and 65 percent were women, that means the rest of the crowd are men, which is 35 percent. By multiplying 35 percent by the overall population, 1200, (1200*35/100), you'll get 420 men.

4 0
2 years ago
Read 2 more answers
A car is going 50 miles per hour. A rate that describes this would have units of
Over [174]

Answer:

mph or miles per hour

Step-by-step explanation:

5 0
2 years ago
The sand falls at a rate of 60 cubic millimeters per second. How much time do you have to answer the question
e-lub [12.9K]
You Have -3 Seconds FAM 
3 0
3 years ago
Match the following items.
IgorLugansk [536]

Answer:

#1 is 3x + 4 =-17 #2 is 3x =-21 #3 is x = -7 #4 is 2x + x +4 = -17

Step-by-step explanation:

#1 gives you the problem ready to be worked out. #2 all you need to do to finish it is divide both sides by 3. #3 the answer is already there. #4 You need to combine the like terms then solve the problem.

3 0
3 years ago
Other questions:
  • Which is less? 8 1/8 or 8.08
    15·2 answers
  • $13000 is compounded semiannually at a rate of 9% for 20 years
    10·1 answer
  • 7/11÷2/5=<br>A.1/11<br>B.22/35<br>C.5/6<br>D.35/22
    9·1 answer
  • PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
  • What is the best approximation for the circumfrence of a circle with a diamiter of 400 inches​
    6·1 answer
  • Which is the slope of a line through the points (-1, 2) and (5, 8)?
    7·1 answer
  • How do you write 21/30 as a percent?<br> Please show how to do it :D
    10·2 answers
  • What kind of Slope goes up and to the right? What kind of Slope goes down to the right? What kind of Slope is flat?
    5·1 answer
  • Help me out please an thank you
    13·2 answers
  • Jane eats 2/3 of a cup of cereal for breakfast every day. If the box contains a total of 24 cups, how many days will i take to f
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!