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Ahat [919]
3 years ago
5

10 POINTS Could someone please answer these questions please

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
5 0

Answer:

dont lie, thats only 5 points

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Anty was riding his bike to school at a speed of 12 mph. When he was of the way there, he got a flat tire. His mother drove him
NemiM [27]

Complete question:

Anty was riding his bike to school at a speed of 12 mph. When he was <u>half </u>of the way there, he got a flat tire. His mother drove him the rest of the way at a speed of 48 mph. What was his average speed?

Answer:

His average speed is 19.2 mph

Step-by-step explanation:

Given;

speed of Anty to school half of the way, v₁ = 12 mph

speed of Anty when his mother drove him half of the way, v₂ = 48 mph

The average speed of Anty is calculated as;

V_{average} = \frac{Total \ distance }{Total \ time }

The value of the average speed is closer to 12 mph than 48 mph because Anty spent more time moving at 12 mph than at 48 mph.

Let the equal distance travel at each speed = 96 miles

Time taken at 12 mph = \frac{96 \ mile}{12 \ m/h} = 8 \ hours

Time taken at 12 mph = \frac{96 \ mile}{48 \ m/h} = 2 \ hours

Average speed = \frac{Total \ distance}{Total \ time } = \frac{96 \ mile \ + \ 96 \ mile}{2\ hr \ + \ 8\ hr} = \frac{192 \ miles}{10 \ hrs} = 19.2 \ mph

Also, you can assume any other equal distance traveled at each speed, the average speed will still be 19.2 mph.

<u>Check:</u> let the equal distance traveled at each speed = 480 miles

Time taken at 12 mph = 480/12 = 40 hours

Time taken at 48 mph = 480/ 48 = 10 hours

Average speed = (480 + 480) / (40 + 10)

                          = 19.2 mph

8 0
2 years ago
The variance of any standard normal distribution is________.<br> a) 0.5.b) -0.5.c) 0.d) 1.
goblinko [34]

Answer:

d) 1

Step-by-step explanation:

The variance of standard normal distribution is simply put as 1.

If you take it a bit further, even though not asked, the mean of a standard normal distribution is 0.

Therefore, the conclusion is that, the variance of a standard normal distribution is 1, while the mean of the same standard normal distribution is 0

3 0
3 years ago
A bakery sold 2070 loaves of whole wheat bread in January the bakery also sold 6930 los of other kinds of bread that month what
xxMikexx [17]
2070 / 6930 = 0.2987.....x 100 = 29.87%
6 0
3 years ago
2x2 = 4 4x 10 = 40 x 32 = ?
nikklg [1K]

Answer:

1280

Hope this helped :D

8 0
3 years ago
20 POINTS AND BRAINLIST
Anna35 [415]
A - i hope so


363 divided by 22 is 16.5

16.5 x 15 is 247.5
7 0
3 years ago
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