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Goshia [24]
3 years ago
7

Amy knits 1/10 of a scarf in 4/5 of an hour. What fraction of scarf can Amy knit in 1 hour

Mathematics
1 answer:
g100num [7]3 years ago
6 0

Answer:

Amy can knit \frac{1}{8} of a scarf in 1 hour.

Step-by-step explanation:

This question can be solved by proportions, using a rule of three.

We have that:

1/10 of a scarf - 4/5 of an hour

x of a scarf - 1 hours.

Applying cross multiplication:

\frac{4x}{5} = \frac{1}{10}

x = \frac{5}{10*4} = \frac{5}{40} = \frac{1}{8}

Amy can knit \frac{1}{8} of a scarf in 1 hour.

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So if a video that is 15:34 how long is it when 2 times speed
rusak2 [61]

Answer:

7:47

Step-by-step explanation:

Here are two ways of solving this:

The video will be half the time of 15:34, so you need to divide the time 15:34 by 2.

Method 1)

Use the tip. The video is 15 minutes and 34 seconds long.

Convert minutes to seconds: 15 * 60 = 900

Add 34 seconds to the 15 minutes: 900 seconds + 34 seconds = 934 seconds

The video is 934 seconds long.

Divide the total seconds by 2: 934/2 = 467

467 seconds = 420 seconds + 47 seconds = 7 minutes and 47 seconds

Answer: 7:47

Method 2)

Divide the minutes by 2 and divide the seconds by 2.

15 minutes and 34 seconds.

Divide minutes by 2: 15/2 = 7.5

Divide seconds by 2: 34/2 = 17

Now we need to add 7.5 minutes and 34 seconds.

0.5 minutes is half a minute, so it's 30 seconds.

7.5 minutes + 17 seconds =

= 7 minutes + 0.5 minute + 17 seconds

= 7 minutes + 30 seconds + 17 seconds

= 7 minutes + 47 seconds

= 7:47

Answer: 7:47

6 0
3 years ago
3. Jim bought a new pair of glasses. The lenses had six sides. The lenses were in the shape of a A. hexagon. B. heptagon. C. qua
Vladimir [108]
Best Answer:<span>  </span><span>6 sides is a hexagon. 

the spoke of a wheel is like a radius. Circumference is equal to 2πr so r = 42/2π ≈ 6.69 inches, ans. D. 

that's it! ;)</span>
5 0
3 years ago
Find the mean, median, and mode of the data. Which reflects the best measure of the center? 43, 38, 37, 57, 57, 58, 45
Allushta [10]

ANSWER:

mean:47.8

mode:57

median:45

37, 38, 43, 45, 57, 57, 58

8 0
3 years ago
Increase £84 by 3%<br> thank you!
Alex777 [14]
If you would like to increase £84 by 3%, you can calculate this using the following steps:

3% * £84 = 3/100 * 84 = £2.52

£84 + £2.52 = £86.52

The correct result is £86.52.
8 0
3 years ago
I need urgent help plzz the answer will be marked as brainliest
ludmilkaskok [199]

  1. 51cm^2
  2. 27cm^2
  3. 78cm^2

to find the area of compound shapes, you break them apart and find each shapes area then add it together.

to find the area of a square, use A=l * w

to find the area of a triangle, use, A= 1/2 b * h

6 0
3 years ago
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