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2 years ago

Please help me. Disclaimer: don't do it for points

Mathematics

2 answers:

xxTIMURxx [149]2 years ago

8 0

1- 1.50
i don’t have time for the rest

Mnenie [13.5K]2 years ago

7 0

Answer:

1. 1.50

2. .75

3. 1.32

4. 3.06

5. 4cm

6. .75

7. 2.75

8. 81

9. 3.63

10. 210.25

Step-by-step explanation:

1. 3 times pi equals radius. find radius using circumference. C=9.42.

2. 4.71=2TTr

3. 1.15 x 1.15

4. 1.75 x 1.75

5. 2 x 2

6. 4.7=2TTr

7. 17.28=2TTr

8. 9 x 9

9. 22.77=2TTr

10. 14.5 x 14.5

<h2>Note: These may not be the correct answers but I have tried my best!! :)</h2>

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Mixed Number Form :

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Hope this helps !

Have a great day! :)

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3 years ago

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B
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3 years ago

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Subtract. -21 - (-13)

Burka [1]

Answer:

-8

Step-by-step explanation:

-21-(-13)

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2 years ago

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I walk each day to school. By what percentage would I need to increase my usual average speed in order for the journey to take 2

lesya692 [45]

Answer:

25%

Step-by-step explanation:

Let v, t be the current average speed and the time taken to reach the school respectively.

As distance = speed x time, so,

distance, d=vt...(i)

Let V be the new average speed in order to to take 20% less time than t.

So, time taken with speed V = t-20% of t = t- 0.2t= 0.8t

As distance is constant, so

d= V(0.8t)= 0.8Vt

hBy using equation (i), we have

0.8Vt = vt

0.8 V = v

V= v/0.8=1.25v

Therefore, the percentage increase in the average speed = $\frac{V-v}{v}\times 100$

$=\frac{1.25v-v}{v}\times 100$

=25%

Hence, the percentage increase in the average speed is 25%.

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2 years ago