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boyakko [2]
2 years ago
14

HELP FOR BRAINLIEST PLS!

Mathematics
1 answer:
julia-pushkina [17]2 years ago
6 0
I think the answer is 146.8 because two angles in a triangle should always add up to 180 therefore you solve the equation:
180 = 3x + 4 + 2x + 10

combine like terms.
180 = 5x + 14

get rid of the variable (14)
180 -14 = 5x + 14 - 14
166 = 5x

the divide to get x
166/5x = 33.2
33.2 = x

then you’re going to subtract your answer from 180 to get the angle measurement of the third angle, the answer you should get it 146.8

hope this helps!!
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Which of the following expressions is equivalent to a+(– b)? Select all that apply.
Setler79 [48]

Answer: first  option.

Step-by-step explanation:

Given the expression:

a+(- b)

You need to remember the multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-

Then, you know that:

a+(- b)=a-b

So, an equivalent expression must have a and -b. Let's check the expressions provided in the options:

(- b ) + a=-b+a \\\\b + (-a)=b-a \\\\(-a ) + b=-a+b

You can observe that the equativalent expression is:

(- b ) + a

7 0
3 years ago
Find the factors of<br>y2 + 2y - 35​
baherus [9]

Answer:

(y-5)(y+7)

Step-by-step explanation:

3 0
3 years ago
-x+y=5 4x+y=10 Use addition to solve the linear system of equations. Include all of your work in your final answer
kari74 [83]
Answer:
x = 1
y = 6

Explanation:
The first given equation is:
-x + y = 5
Multiply this equation by -1, you will get:
x - y = -5 ............> I

The second given equation is:
4x + y = 10 ..........> II

Add the two equations I and II as follows:
    x   - y = -5
+  4x + y = 10
..............................
    5x        = 5
Therefore:
x = 5/5
x = 1

Substitute with x in equation I to get y as follows:
x - y = -5
1 - y = -5
y = 1 + 5
y = 6

Hope this helps :)
3 0
3 years ago
Please help<br> Tfyggyguguhuhbu
miss Akunina [59]

Answer:

a. P

b. P

c. P

d. P

e. NP

f. because it is a straight line that does not pass through the origin.

Step-by-step explanation:

7 0
2 years ago
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Solve 2(x + 3) = -4(x + 1) for x.
vitfil [10]

Answer:

x = -10/6 or - 5/3 (in lowest terms)

Step-by-step explanation:

To solve 2(x + 3) = -4(x + 1) for x:

Distribute 2 into (x + 3), and -4 into (x + 1):

2(x + 3) = -4(x + 1)

2x + 6 = -4x - 4

Add 4x to both sides:

2x + 6 + 4x = -4x + 4x - 4

6x + 6 = -4

Subtract 6 from both sides:

6x + 6 - 6 = -4 - 6

6x = -10

Divide both sides by -6:

\frac{6}{6} = \frac{-10}{6}

x = -10/6 or - 5/3 (in lowest terms)

8 0
3 years ago
Read 2 more answers
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