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Maksim231197 [3]
3 years ago
9

20% of 80 = 40% of ________ ?​

Mathematics
1 answer:
iren2701 [21]3 years ago
4 0

Answer: 160

Step-by-step explanation:

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Ji-Hun and Kana are running a marathon. Due to the volume of people running, the starts occur in waves. Kana starts at 9:35 a.m.
iris [78.8K]

Answer:

23.52 miles

Step-by-step explanation:

Let us find the number of miles that they would have run.

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Let the time she has spent so far be t.

Speed is given as:

s = d / t

where d = distance and t = time

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Therefore, for Kana:

d = 7 * t = 7t _____________(1)

Ji-Hun starts at 10:00 am (25 minutes after Hannah) and runs at an average rate of 8 mph.

25 minutes = 25/60 hour = 0.42 hour

So, his time (compared to Kana's) is t - 0.42.

therefore, for Ji-Hun:

d = 8 * (t - 0.42)

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Equating (1) and (2):

7t = 8t - 3.36

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3 years ago
Use the Pythagorean theorem to find the length of the leg in the triangle shown below 12 15
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9 = x (assuming 15 is the hypotenuse)

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3 years ago
Is -0.25 or -0.05 larger?
rusak2 [61]
-0.05 is larger. Since they're negative, you're going by which is closer to 0 rather than farther. -0.05 is closer to 0 on a number line, so it's larger than -0.25.
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25.6

Step-by-step explanation:

Use the distance formula.

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In a circle graph displaying the most popular juice sold to students in the school cafeteria, the ratio of apple juice boxes to
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