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Romashka-Z-Leto [24]
3 years ago
6

_2. You have a part-time job 4 days per week, 5 hours per day. How many hours will you work in two weeks?

Mathematics
1 answer:
marta [7]3 years ago
6 0

Answer:

C) 40

Step-by-step explanation:

For every one day your work is 5 hours.

1 day = 5 hours

Set up a proportion so it would be:

\frac{1 day}{5 hours} = \frac{4 days}{x hours}

4 days x 5 hours = 20 hours/week

So now you know you know you work 20 hours/week, then multiply by 2 since they're asking how many hours will you work in two weeks:

20 hours x 2 weeks = 40 hours in two weeks

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Among many other formulas, the area of a triangle is


S = \frac 1 2 a c \sin B


where B is the angle between sides a and c.


S=\frac 1 2(10)(20) \sin 67^\circ \approx 92.05 \textrm{ sq cm}



Answer: 92.05 sq cm, first choice


Bonus. Here's a formula for the area S of a triangle your teacher doesn't know:


16S^2 = 4a^2b^2 -(c^2-a^2-b^2)^2=(a^2+b^2+c^2)^2-2(a^4+b^4+c^4)



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Find two consecutive even integers whors sum is 86. Which of the following could be used to solve the problem?
Yuliya22 [10]

Answer:

42 and 44

Step-by-step explanation:

The even numbers are numbers which can be written as 2n where n is any integer number.

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(We can verify this answer by doing 42 + 44 = 86)

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