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Hunter-Best [27]

3 years ago

9

Gerry is checking to see how many customers the barber shop had in the past 2 weeks. on the list there were 217 customers during

the past 2 weeks and 5/7 of them were men. how many of the customer were men?
please help me quick

1 answer:

Nat2105 [25]3 years ago

4 0

Answer:

155

Step-by-step explanation:

5/7 * 217 = 155 men

(Dont mind this. I just need to write sth to make it long)

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Use your calculator to find the value of each trig function below. Round to the tenth place.

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Answer: 0.7

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Answer:

a)The second student arrive 7 minutes and 36 seconds sooner

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Step-by-step explanation:

Speed= Distance/Time

We are looking for time now

Time = Distance/Speed

First student

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Second student

Time = 780 m/1.90 m/s=410,52 seconds

Difference=866,66-410,52= 456,14 seconds

In minutes

Difference= 456,14 seconds /60=7 minutes 36 seconds

Distance=Speed x Time

Speed¹ x Time¹ =Speed² x Time²

Time¹= Time² + 5.50 min

5.50 min =350 seconds

Time² =Speed¹ x Time¹ /Speed²

Time² =Speed¹ x (Time² + 350 seconds ) /Speed²

Time² =0.9 x (Time² + 350 seconds ) /1.9

Time² =0,4737 x (Time² + 350 seconds )

Time² =0,4737 Time² + 165,79 seconds

Time² - 0,4737 Time² = 165,79 seconds

0,5263 Time² = 165,79 seconds

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3 years ago

What is the area of the sector ?

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They forget to say "not to scale". I'm guessing this is trig because I don't see another way to do it.

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$x^2 = 162 - 162 \cos B$

$\cos B = \dfrac{162 - x^2}{162} = 1 - \dfrac{x^2}{162}$

$\cos B = 1 - \dfrac{34 - 30\cos 81^\circ}{162}$

$B = \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ }{162} \right)$

The area of the circle is the fraction given by the angle,

$A = \dfrac{B}{360^\circ} \pi r ^2$

$A \approx \dfrac{ \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ}{162} \right) }{360} (3.142)9^2$

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