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zloy xaker [14]
2 years ago
6

A driver spent 45minutes to cover a distance of 120km. what is the speed of the driver in km per hour.

Mathematics
1 answer:
drek231 [11]2 years ago
4 0

Answer:

  • The speed is 160 km /h

Step-by-step explanation:

A driver spent 45minutes to cover a distance of 120km

Convert minutes to hour

  • 45 min = 45 /60 hr = 3/4 hr

Use the distance equation

  • d = ts

Find the speed

  • s = d/t

Substitute the distance and time value and find the value of speed

  • s = 120 / (3/4) = 120 * 4/3 = 160 km /h
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5.a) Steve - 60=5×12

= <u>5×3×2×2</u>

5.b) Ian - 60=6×10

= <u>3×2×5×2.</u>

<u>Discussion</u> - The prime factors reduce to the same numbers in both Steve's and Ian's case.

5.c) Case 1 of 48 = 6×8

= <u>3×2×2×2×2.</u>

Case 2 of 48 = 12×4

= <u>2×2×3×2×2.</u>

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3 years ago
Find the area of the triangle.<br> 3 cm<br> 11 cm<br> C с<br> 14.5 cm
boyakko [2]

Answer: The answer is 43.5 because when using the formula you get this result.

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6 0
3 years ago
-2/5x - 1/2 + x = -40/11
IgorLugansk [536]

Answer: x = 6.56

Step-by-step explanation: -0.4x - 0.5 + x = 3.63

-0.4x^2 - 0.5 = 3.63

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7 0
2 years ago
A three-dimensional model of lucia’s apartment is shown. to cool the whole apartment, an air conditioner must provide 2.5 btus p
SashulF [63]

The number of btus which are needed to cool Lucia’s apartment shown in the three-dimensional model are 20,400 btus.

<h3>What is of volume of rectangular prism?</h3>

Volume of rectangular prism is the amount of quantity, which is obtained in it in the 3 dimensional space.

Volume of a rectangular prism is the product of its width, height and length.

V=w\times h\times l

Here, (w) is the width of the base (l) is the length and (h) is the height of the rectangular prism.

A three-dimensional model of Lucia’s apartment is shown. The image is attached below for the apartment. The three section are there in the apartment. The volume of this apartment is,

V=[(20\times12)+(20-9)\times16+(20\times20)]\times10\\V=8160\rm\; ft^3

To cool the whole apartment, an air conditioner must provide 2.5 btus per cubic foot. To cool, the 8160 cubic foot apartment the btus needed are,

n=8160\times2.5\\n=20400\rm\; btus

Hence, the number of btus which are needed to cool Lucia’s apartment shown in the three-dimensional model are 20,400 btus.



Learn more about the volume of a rectangular prism here;

brainly.com/question/4016105

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2 years ago
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