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djverab [1.8K]
3 years ago
5

How many hours must you drive if you drive 643 miles at 65 mph on the interstate? Round to the nearest tenth hour

Mathematics
2 answers:
madreJ [45]3 years ago
7 0
In order to drive 643 miles at 65 mph, I believe it would take 9.9 hours. (It is 9.8923 not rounded to the nearest tenth btw lol) I hope this is right! :)
IrinaVladis [17]3 years ago
5 0

Answer:

9.9 hours, rounded to the nearest tenth hour.

Step-by-step explanation:

To calculate the time of travel, we must first divide the distance by the speed. Why, you ask? Because of this equation:

Speed\=\ \frac{distance}{time}

Therefore, with a little bit of arrangement, we get:

Time\=\ \frac{distance}{speed}

So, let's get on with it.

Time\=\ \frac{643 \ miles}{65 \ mph}

Time\=\ 9.9 \ hours

Finally, we have our answer: 9.9 hours, rounded to the nearest tenth.

Hope this helped!

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So since there are 64 ounces in 8 cups, you can just divide by 8, to find how many sets of 8 there are in 64.

64 = 8

64 / 8 = 8 / 8

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Fern has 2 1/4 gallons of paint. Each gallon of paint will cover 375.5 ft2. How many square feet will fern be able to cover if s
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4. Find the volume of the figure. The base is a square.
GREYUIT [131]

Answer:

A) 283500 ft³

B) 1057.26 π in³

Step-by-step explanation:

A) Volume of square based pyramid

= 1/3 × Area of the base × height

= 1/3 × (90 ft)² × 105 ft

= 283500 ft³

B) This figure is a composite figure

Step 1

Find the volume of the cone

=1/3 πr²h

r = radius = 8.5 in

h = height = 10 in

= 1/3 × π × (8.5 in)² × 10 in

= 240.83333333 π in³

≈ 240.83 π in³

Step 2

Find the volume of the cylinder

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= r = radius = 8.5 in

h = height = 11.3 in

= π × (8.5 in)² × 11.3 in

= 816.425 π in³

≈ 816.43π in³

Volume of the figure = (240.83 π + 816.43 π) in³

= 1057.26 π in³

7 0
3 years ago
Y=(x^4)-(6^3)+(50x^2)+122x=65<br>find the zeros
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Answer:

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