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Delvig [45]
4 years ago
15

Which statement makes the best open sentence 12 + 3x = 30 true?

Mathematics
1 answer:
Elena L [17]4 years ago
5 0

The equation 12+3x=30 can be solved by the following

12+3x=30

First subtract 12 from both sides making the equation

3x=18

Now divide 3 from both sides

x=6

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10g - 4 (g - 2) + 11 = 1
sergij07 [2.7K]

Answer:

g = -3

Step-by-step explanation:

10g-4(g-2)+11=1

1) 10g-4g+8+11=1  Combine like terms

2) 6g+8+11=1

3) 6g+19=1

4) 6g=-18   To continue the process of getting the variable by itself, we have to get rid of 19. So we are going to subtract 19 from 19 to get 0, and whatever we do to the other side, so we subtract 19 from 1 to get -18.

5)6g=-18    To get the variable by itself, instead of mutiplying, we will divide by 6 on both sides to get... g=-3! Hope this helps!

5 0
3 years ago
2 (n-3)=4n+1 I am not sure how to do this?
kvv77 [185]

Answer:-4=2n

Step-by-step explanation:

8 0
3 years ago
Solve for a. Assume that a, b and c are not zero. abc=c
Ronch [10]
What we know:
a, b and c are not zero
abc=c

What we need to find:
a

abc=c
abc/bc=c/bc additive inverse
a=1/b simplified
5 0
3 years ago
From an upstairs window, I can see my neighbor’s fence. The angle of depression is 7 degrees. If my window is 15 ft off the grou
Tresset [83]

Answer:

1.84ft

Step-by-step explanation:

From the figure attached,

AB = Height of the window = 15ft

Let the distance between the base of the housr and the fence 'C' = xft

If the angle of depression = 7°

Then angle of elevation of the top of the fence from the house = 7°

Now from right triangle ABC,

tan7° = x/15

x = tan7°×15

x = 0.1227×15

x = 1.84ft

Therefore, distance of the house from the fence is 1.84ft

3 0
4 years ago
Evaluate 7h + 3, if h = 2
REY [17]

Answer:

17

Step-by-step explanation:

7h+3

7(2)+3

14+3

=17

7 0
3 years ago
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