3 years ago

Use reasoning algebra to write the unknown factor

Mathematics

1 answer:

NARA [144]3 years ago

7 0

I dont get it... lol

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claire mowed 5 lawns last week. show mowed each lawn in 7/12 hour. she mowed the same lawns this week in 5/12 hour each using he

Zinaida [17]

Answer:

$\dfrac{5}{6}$ hour or 50 minutes

Step-by-step explanation:

Last week:

Claire mowed 5 lawns

She mowed each lawn in $\frac{7}{12}$ hour.

She spent

$5\cdot \dfrac{7}{12}=\dfrac{35}{12}=2\dfrac{11}{12}$

hours to mow 5 lawns.

This week:

Claire mowed 5 lawns

She mowed each lawn in $\frac{5}{12}$ hour.

She spent

$5\cdot \dfrac{5}{12}=\dfrac{25}{12}=2\dfrac{1}{12}$

hours to mow 5 lawns.

Difference:

$2\dfrac{11}{12}-2\dfrac{1}{12}=\dfrac{11}{12}-\dfrac{1}{12}=\dfrac{10}{12}=\dfrac{5}{6}$

hour or 50 minutes.

5 0

4 years ago

Which of the following graphs shows a direct variation (proportion)?

Ilia_Sergeevich [38]

Answer:

a, d

Step-by-step explanation:

A direct variation graph will just have points going in a straight line.

The only graphs with a straight line are (a) and (d).

7 0

2 years ago

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To paint a house, two painters are hired. The first painter can paint the entire house in ten hours. The second painter will nee

wel

There is a formula you can use:
Time = (Worker1 * Worker2) / (Worker1 + Worker2)
Time = (10 * 6) / (10 + 6)
Time = 60 / 16
Time = 3.75 hours

7 0

3 years ago

17 is what percent of 340

AleksAgata [21]

Answer:

Step-by-step explanation:

to work out what percent 17 is out of 340 we can formulate an equation

so 340(x%)=17

when we solve for x we get 5

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3 years ago

The times for Erin’s five laps around the track were 56.6 seconds, 57.9 seconds, 57.5 seconds, 65.3 seconds, and 65.7 seconds. U

Dafna1 [17]

Answer:

i think is probably 70 sec or 75

Step-by-step explanation: idk

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3 years ago

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