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alekssr [168]
3 years ago
13

Solve -4(3x – 7) = 52 for x. a. x = 2 b. x = -2 c. x = -4 d. x = 4

Mathematics
1 answer:
Darya [45]3 years ago
5 0

Answer: x = -2

Step-by-step explanation:---------------

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Stella [2.4K]

Answer:

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Step-by-step explanation:

distribute the 8

so multiply 8 by 2m which is 16m then multiply 8 by 1 which is 8 put em together and u get final solution of 16m+8

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A cell phone cost $10 for the phone and $2 per hour that someone talks on the phone. If Jeremiah spent $30 total, how many hours
AnnZ [28]

Answer: C. 10 + 2h = 30

Step-by-step explanation:

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  2. B does not make sense because the phone billing company would be charging Jeremiah a higher amount than the amount he uses while speaking on the phone.
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The midpoint of AB is M (5,5). If the coordinates of A are (7, 8), what are the
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(3,2) just use a slope triangle (over 2 up 3) and do it in reverse

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2 years ago
A train track through a mountain is 1600 feet long and makes an angle of 1.6 with the horizontal. What is the change in elevatio
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Step-by-step explanation:

law of sine :

a/sinA = b/sinB = c/sinC

with the sides and correlating angles being always opposite to each other.

we are dealing with a right-angled triangle here.

the train track is the Hypotenuse (the side opposite of the 90° angle) : 1600 ft.

the horizontal level "connection" from beginning to the end of the track is one leg, and the elevation difference at the end of the track is the second leg.

the 2 legs enclose a 90° angle, as the elevation goes straight up from the horizontal level.

so, we have

1600/sin(90) = elevation difference / sin(1.6)

sin(90) = 1

1600 = elevation difference / sin(1.6)

elevation difference = 1600 × sin(1.6) =

= 1600 × 0.027921639... =

= 44.67462196... ft

≈ 44.7 ft

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2 years ago
This year Tammy watched 80 movies she thought that 72 of them were very good of the movie she watched what percentage does she t
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Answer:

its 20% i think hope this helped

Step-by-step explanation:

4 0
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