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klasskru [66]
2 years ago
8

Working alone, Jack can do a puzzle in 5 hours. With his brother's help, the two can do the same puzzle in 2 hours. How long wou

ld it take Jack's brother to do the puzzle alone?
Mathematics
2 answers:
Ulleksa [173]2 years ago
8 0

Answer:

3 hours

Step-by-step explanation:

5 - 2 = 3

hoa [83]2 years ago
4 0

Answer:

3 hours and 20 minutes

Step-by-step explanation:

(I'm so sorry I forgot the work)

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$2,662.50

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kadeem and quinn both drive 25 miles. Kadeem drives at a constant speed of 50 miles an hour. Quinn drives at a constant speed of
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Solve the system by substitution<br><br><br> -x - y - z = -8<br> -4x + 4y + 5z = 7<br> 2x + 2z = 4
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2 years ago
A coordinate grid with 2 lines. The first line is labeled y equals negative StartFraction 7 over 4 EndFraction x plus StartFract
LekaFEV [45]

Answer:

Question 1. (2.2, -1.4)

Question 2. (1.33, 1)

Step-by-step explanation:

Equations for the given lines are

-----(1)

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------(2)

This equation passes through (0, -3) and (2.2, -1.4).

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x =

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From equation (2),

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Therefore, solution of these equations is (2.2, -1.4).

Question 2.

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2 years ago
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