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KIM [24]
3 years ago
7

Solve the equation-3y = 21 using inverse operations. What is the inverse operation step? What is the solution?

Mathematics
2 answers:
Ksju [112]3 years ago
6 0

Answer:

Y=-7

Step-by-step explanation:

GaryK [48]3 years ago
5 0

Answer:

-7

Step-by-step explanation:

You divide -3 on both sides to get the variable by itself, so -3 divided by 21 is -7

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3 years ago
If the measure of angle 2 is 125 degrees, find the measure of angle 3.PLS HELP
Tpy6a [65]
Angle C would be 55 degrees. A straight line is 180 degrees so you would do 180-125 which equals 55. Hope this helps!
3 0
3 years ago
PLEASE HELP ME SOMEONE
Anna71 [15]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
A homeowner is installing a swimming pool in his backyard. he want its length to be 4 feet longer than its width. then he wants
marishachu [46]
1. You have that:

 - The homeowner<span> want the length of the swimming pool to be 4 feet longer than its width.</span> 
 - He wants to surround it with a concrete walkway 3 feet wide.
 - He can only afford 300 square feet of concrete for the walkway.

 2. Therefore, the tota area is:

 At=L2xW2

 L2 is the lenght of the walkway (L2=L1+3+3⇒L2=(W1+4+6)⇒L2=W1+10).
 W2 is the width of the walkway (W1+3+3⇒W2=W1+6)

 3. The area of the walkway is:

 A2=At-A1

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 4. Therefore, you have that the width of the swimming pool is:

 A2=(W1+10)(W1+6)-(W1+4)(W1)
 300=(W1²+6W1+10W1+60)-(W1²+4W1)
 W1²+16W1+60-W1²-4W1-300=0
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 W1=240/12
 W1=20 ft

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8 0
3 years ago
23 students are making smiley faces from macaroni noodles. The teacher got a box of macaroni’s that has 276
drek231 [11]

Answer:

12 noodles

Step-by-step explanation:

If each child is given x amount of noodles, and there are 276 noodles to split among 23 students, set up the equation as seen below:

276÷23=12

276 noodles divided by 23 children = 12 noodles per child.

3 0
2 years ago
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