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nydimaria [60]
3 years ago
6

Please help! Thanks alot

Mathematics
2 answers:
Rina8888 [55]3 years ago
6 0

kfkffjdjdkkekkekzkzkefnfnfnfnddn

wlad13 [49]3 years ago
3 0

Answer:

37.5 , 67.5 , 75

Step-by-step explanation:

x+x+30+2x=4x+30=180\\4x=150\\x=37.5\\

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8. Solve the system of equations using substitution.
Elodia [21]

Answer:

D

Step-by-step explanation:

In order to solve this we need to plug in the answer choices and make sure they work for BOTH answers!

Let us start with option A. (6,3)  3 = 4(6) + 6     = 3 = 30 This is automaticly wrong because 3 doesnt equal 30. There is no need to try it on the second equation since the first one was wrong.

Next answer choice, B  (3,6)  6 = 2(3) =   6=6. The second equation works perfect for this. Now we have to make sure that it works for the first one as well. 6 = 4(3) + 6   = 6 = 18 which is wrong.

Next, C.  (1,2)   2 = 2(1) = 2=2 Right now lets check the other equation.

2 = 4(1) + 6 = 2=10. Wrong

Last, D. (-3, -6)    -6 = 2(-3)  = -6 = -6 Right now lets check the other equation.

-6 = 4(-3) + 6 = -6 = -6. CORRECT. Answer choice D works for both equations.

Sorry for the wait of response.

8 0
3 years ago
Represent the following sentence as an algebraic expression, where "a number" is the letter x. You do not need to simplify.
zloy xaker [14]

Answer:

The statement, one fifth of the square of a number is written as

\frac{1}{5}  {x}^{2}

Hope this helps you

6 0
3 years ago
How do I simplify this problem
ziro4ka [17]
8: 17/24
9: 7/48
10: 5 1/4
11: 1.75
3 0
3 years ago
What is x=15 a a function and please explain the process
Vika [28.1K]
<span>Simplifying 15 + 5x = 0 Solving 15 + 5x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 5x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + 5x = 0 + -15 5x = 0 + -15 Combine like terms: 0 + -15 = -15 5x = -15 Divide each side by '5'. x = -3 Simplifying x = -3</span>
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4 years ago
77 7/8% into a fraction
wariber [46]
The answer is 623/800 and that is in simplest form.
3 0
3 years ago
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