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Daniel [21]
3 years ago
12

I’ve asked 3 times and no one knows pls helpahh

Mathematics
1 answer:
BigorU [14]3 years ago
7 0
<h3>Answer:  x = 21</h3>

Explanation:

The two angles shown combine to 180 degrees because the angles form a straight line.

(3x+18)+(4x+15) = 180

7x+33 = 180

7x = 180-33

7x = 147

x = 147/7

x = 21

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Consider the expression 6n^2 + 2n + 3. What is the coefficient of n?
Inessa [10]

Answer:

2

Step-by-step explanation:

The coefficient is the number in front of the variable.

So, in this case, the coefficient of n^2 is 6 and of n is 2.

4 0
3 years ago
Which angle number represents &lt;KHI?​
tatiyna

Answer:

8,9,11

Step-by-step explanation:

A-1

B-2

C-3

D-4

E-5

F-6

G-7

H-8

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4 0
2 years ago
If you know this please tell me all the answers
sp2606 [1]
1. 3n
2. 9x
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4. 5ac^2
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7 0
3 years ago
2x + y = -4<br> 2x + 3y = 4
kirill115 [55]

Answer: x=4 ; y=<u> -4</u>

                            3

Step-by-step explanation:

2x + y = -4 .(-3)

2x + 3y = 4

-6x-3y=12

<u>2x + 3y = 4</u>

4x=16

x= <u>16</u>

    4

x=4

2x + 3y = 4

2.4+3y=4

8+3y=4

3y= -8+4

y=<u> -4</u>

   3

7 0
3 years ago
Please help got to get grade up
dusya [7]

Answer:

10

Step-by-step explanation:

The ratio of abc/def=1.5

15/1.5=10

if you have insta follow me if you want at riztofu

5 0
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