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Alchen [17]
3 years ago
11

Oh god does anyone understand this? I need help it’s for a test and I wanna do good!!

Mathematics
1 answer:
Kobotan [32]3 years ago
6 0

Answer:

A

Step-by-step explanation:

Its a right angle, so you have to use trigonometry.

To find x , you use sin60° = opposite/hypotenuse

opposite = x and hypotenuse = 5 . So,

sin60°= x/ 5

5sin60° = x

put the value into your calculator you ' ll get:

x = \frac{5 \sqrt{3} }{2}

To find y, cos60°= adjacent/hypotenuse

adjacent= y and hypotenuse = 5. So,

cos60°= y/5

5cos60°=y

y =  \frac{5}{2}

Hope I was able to help. Good luck!<3

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HACTEHA [7]

Answer:

B. 2x + 4y

Step-by-step explanation:

If x = 4, and y = 7, let's substitute these values for x and y in the equations!

For A, the equation is 2xy. Substitute the values and you have 2(4)(7) which equals 56. This expression is incorrect since the expression doesn't equal 36.

For B, the equation is 2x + 4y. Substitute and you get the equation

2(4) + 4(7) → 8 + 28 = 36.

36 is your desired value, and you get that with the expression 2x + 4y.

6 0
3 years ago
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Answer:

The school has 6 periods a day needs 1 hour for each.

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3 0
3 years ago
John's patio is 5 feet long<br> and has an area of 1.30<br> square feet<br> How wide is the patio?
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Step-by-step explanation:

so, I assume the patio is a true rectangle.

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Answer:

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