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3 years ago

An object travels 8 miles in 20 minutes at a constant speed. What is the

Mathematics

1 answer:

strojnjashka [21]3 years ago

6 0

Answer: 24miles/hour

Step-by-step explanation: Speed is the change in distance of a body with respect to time.

Speed = Distance/tIme

Given parameters

Distance = 8miles

TIME = 20minutes

Convert minutes to hour

since 60minutes = 1hr

20 min = x

cross multiply

20 = 60x

x = 20/60

x = 1/3

Hence 20mins = 1/3 hr

Speed = 8miles/(1/3)hr

speed = 8 miles * 3/1 hr

speed = 24 miles/hr

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21m−49n factored using the GCF is

kvasek [131]

The GCF would be 7.

3 0

3 years ago

Please i need your help in this question, i will mark you to brainliest

ICE Princess25 [194]

Answer:

$\frac{2520}{64} {ln}^{3}$

Step-by-step explanation:

V=L×W×H

=3½in×1⅞×2¾

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2 years ago

What will be the linear equation for the shown table?

vladimir1956 [14]

Answer:

y=2x+5

Step-by-step explanation:

To find a linear equation you must find the slope and y intercept to create an equation in y=mx+b form (slope-intercept form)

So slope is = y2-y1 / x2-x1 [2 and 1 are subscripts] so 11-7/3-1 so m=4/2 = 2

Slope = 2, now find b

So using y = mx + b, substitute what you know so 7 = 2(1) + b so b=7-2 = 5

Put it all together y = 2x + 5

3 0

2 years ago

76 cm a 52 cm Find the area of the regular pentagon (the answer has one digit after the decimal point)

alekssr [168]

Answer:

98.8 cm²

Step-by-step explanation:

Hi there!

$A=\frac{1}{2} Pa$ where P is the perimeter of the pentagon and a is the apothem (the line going from the center of the pentagon one edge)

1) Find the perimeter

$P=5l$ where l is the side length

Plug in the side length 7.6 cm

$P=5(7.6)\\P=38$

Therefore, the perimeter of the pentagon is 38 cm.

2) Find the area

$A=\frac{1}{2} Pa$

Plug in the perimeter (38) and the apothem (5.2)

$A=\frac{1}{2} (38)(5.2)\\A=\frac{1}{2} (38)(5.2)\\A=\frac{1}{2} (197.6)\\A=98.8$

Therefore, the area of the pentagon is 98.8 cm².

I hope this helps!

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2 years ago

51, 16, 7, 8, 54, 25, 7, 36, 51 - what is the range?

Effectus [21]

47. You subtract the lowest number from the highest to get your range.

6 0

3 years ago

Read 2 more answers