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monitta
2 years ago
11

electrician cuts a 21 ft piece of wire into two pieces. One piece is 4 ft longer than the other. How long are the​ pieces?

Mathematics
1 answer:
aksik [14]2 years ago
7 0

21=a+(a+4)

one piece is 8.5 ft

the other is 12.5 ft

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-8(8v + 1) - 2 = -394
Bess [88]

Answer:

v = 6

Step-by-step explanation:

Solve for v:

-8 (8 v + 1) - 2 = -394

-8 (8 v + 1) = -64 v - 8:

-64 v - 8 - 2 = -394

Grouping like terms, -64 v - 8 - 2 = -64 v + (-8 - 2):

-64 v + (-8 - 2) = -394

-8 - 2 = -10:

-10 - 64 v = -394

Add 10 to both sides:

(10 - 10) - 64 v = 10 - 394

10 - 10 = 0:

-64 v = 10 - 394

10 - 394 = -384:

-64 v = -384

Divide both sides of -64 v = -384 by -64:

(-64 v)/(-64) = (-384)/(-64)

(-64)/(-64) = 1:

v = (-384)/(-64)

The gcd of -384 and -64 is -64, so (-384)/(-64) = (-64×6)/(-64×1) = (-64)/(-64)×6 = 6:

Answer:  v = 6

3 0
3 years ago
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Inga [223]

Answer:

b

Step-by-step explanation:

5 0
3 years ago
Find the missing length in the right triangle.
Sholpan [36]
10 ft because when you add the sides when squared 36+64 = 100 and the square root of that is 10
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Jim is standing beside a pool. He drops away from 4 feet above the surface of the water in the pool. The weight travels a total
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The weight is dropped from 4 feet above the surface. Add -12 to represent the distance the weight falls before it hits the bottom. 4+(-12)=8. The water is 8 feet deep.
(Prezi online)
3 0
3 years ago
10. -4x + 7 = 15; -2 and tell whether the given number is a solution of each equation
astraxan [27]

Answer:

x =   - \frac{3}{2}

Step-by-step explanation:

-4x+7=15-2

subtract number 15-2

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divide

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3 years ago
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