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KengaRu [80]
3 years ago
10

If a worker can do his job in 5 hours, and a student can do the same job in 8 hours, what part of the work is left to finish aft

er two hours of work? NOTE: THEY WORKED TOGETHER
ANSWER: FRACTIOn
Mathematics
2 answers:
Aleks [24]3 years ago
8 0

Answer:

Part of work left to finish after two work hours is 7/20

Step-by-step explanation:

Firstly, we need to calculate their joint work rate

That will be;

1/(1/5 + 1/8) = 1/(13/40) = 40/13

This means that they will complete the task in 40/13 hours

1 whole part takes 40/13

x part will take 2 hours

x * 40/13 = 2

40x = 26

x = 26/40

So the part that will be completed in two hours is 26/40

This means that the part left to complete will be:

1 - 26/40 = 14/40 = 7/20

Mrac [35]3 years ago
8 0

Answer:

7/20

Step-by-step explanation:

you need to find what is left, not how much they did (which is 13/20)

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A number multiplied by -8, subtracted from the sum of 14 and five times the number
Charra [1.4K]

Let us suppose the number is x. Now we try to make an algebraic expression going step by step.

Step 1:

Five times the number means 5 multiplied by x.

So it becomes 5x.

Step 2:

Sum of 14 and five times the number means 5x+14.

Step 3:

Number multiplied by -8 means -8x.

Step 4:

Subtract the expression in step (3) from expression in step (2)

5x+14-(-8x)

Now we can simplify it further,

5x+14+8x

Combining like terms,

13x+14

Answer: The final expression becomes 13x+14.

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Angle Q = 85° Determine angle O.
kkurt [141]

Answer:

∠O = 95°

Step-by-step explanation:

since ∠Q = 85°, arc NOP = 2(85°) = 170°

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2 years ago
Using two independent samples, two population means are compared to determine if a difference exists. The population standard de
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Answer:

Hence the degrees of freedom are associated with the critical value is 25.

Step-by-step explanation:

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2 years ago
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