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2 years ago

Mr datu has enough money to pay 8 workers for 15 days if he adds 4 more workers for how long can he pay at the same rate?

Mathematics

1 answer:

vesna_86 [32]2 years ago

7 0

Answer:

10 days

Step-by-step explanation:

Mr Datu can pay 8 workers for 15 days,

Then at the same rate he can pay 1 worker for the number of days = 15×8

= 120

If he adds number of workers = 4

Then total number of workers = 8 + 4 = 12

With the same rate Mr Datu can pay 12 workers for number of days = $\frac{120}{12}$

= 10 days

Therefore, Mr Datu can pay 12 workers for 10 days a the same rate.

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The answer is

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Step-by-step explanation:

we know that

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In this problem we have

$cos(\theta)=\frac{\sqrt{2}}{2}$

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The angle $\theta$ belong to the third or fourth quadrant

The value of $sin(\theta)$ is negative

Step 1

Find the value of $sin(\theta)$

Remember

$sin^{2}(\theta)+cos^{2}(\theta)=1$

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$sin^{2}(\theta)+(\frac{\sqrt{2}}{2})^{2}=1$

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$sin(\theta)=-\frac{\sqrt{2}}{2}$

$cos(\theta)=\frac{\sqrt{2}}{2}$

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