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3 years ago

Round each number to the nearest ten and estimate the sum.82.14 + 38.5 + 41.3

Mathematics

2 answers:

blagie [28]3 years ago

5 0

82.14 will be rounded down to 80, 38.5 will be rounded up to 40, and 41.3 will be rounded down to 40.

80 + 40 + 40 = 160

The approximate sum is 160.

Kitty [74]3 years ago

4 0

So 82.14 round to 80
And 38.5 round to 40
Last 41.3 round to 40
Together the estimate is 160 estimates to 200
Hope this helps

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Easy questions pls help (question in picture)

lisabon 2012 [21]

Answer:

1. P= 80

60/.75=80

2. x= 5/3

-27/25x / -27/25= -9/5 / -27/25

-9/5 / -27/25 --- -9/5 x -25/27

3. -300

-2.7/-2.7 = 810/-2.7

4. 120

84x100/70

84/x = 70/100

6 0

3 years ago

Read 2 more answers

Please tell me how you got it.

yawa3891 [41]

Answer-

$-70\%$

Solution-

The given data as follows,

$-70\%,\ 0.34,\ -\dfrac{2}{5},\ 0.96\%$

After converting all the percentages and fractions to decimal, we can compare them all.

For converting percentages to decimal to divide the number by 100, so

$-70\%=\dfrac{-70}{100}=-0.70,\\\\0.96\%=\dfrac{0.96}{100} =0.0096$

Then converting the fraction into decimal,

$-\dfrac{2}{5}=-\dfrac{2\times 20}{5\times 20}=-\dfrac{40}{100}=-0.40$

As, all the numbers are converted into decimal, now comparing all the numbers,

$-0.70$

$-70\%$

8 0

2 years ago

How do I make 24/9 into a mixed number

wlad13 [49]

U divide 24 to 9, which is not going to be an exact number, but you can do 9times2=18 so then if you do it in a long division bar you will put 2 on top then minus 18 from 24 which will give you 6, then ur answer is going to be 2 6/9 the nine stays the same (the denominator stay put)

HOPE IT HELPS :)

7 0

2 years ago

Are 3 : 5 and 1.5 : 2.5 equivalent ratios? How do you know?

svetlana [45]

Answer:

Yes.

Step-by-step explanation:

3:5= 1.5:2.5

Each number is divided or multiplyed by the same number.

Ex. 3/2=1.5 and 5/2=2.5

Hope that helps idk if its right though lol

5 0

3 years ago

Reese went cycling in the morning .The ratio of her distance in miles to the length of time in minutes was 15:60 tease concluded

rodikova [14]

Answer:

No, she is not correct as her speed is 0.25 miles per minute.

Step-by-step explanation:

Given:

Ratio of distance to time taken is 15 : 60.

Distance is in miles and length of time is in minutes.

We know that, average speed is given as the ratio of the distance traveled and the length of the time taken.

So, the ratio above is nothing but the average speed of Reese for cycling.

Thus, average speed of Reese is given as:

$\textrm{Average speed}=\frac{Distance}{Time}\\\\\textrm{Average speed}=\frac{15}{60}\ miles\ per\ min\\\\\textrm{Average speed}=\frac{1}{4} = 0.25\ miles\ per\ min$

Therefore, the average speed of Reese is 0.25 miles per minute which is not equal to the one mentioned by Reese as 4 miles per minute.

So, Reese conclusion of her average speed is incorrect. It's not 4 but the reciprocal of 4 which is 0.25 miles per minute.

7 0

3 years ago

Round each number to the nearest ten and estimate the sum.82.14 + 38.5 + 41.3​

Round each number to the nearest ten and estimate the sum.82.14 + 38.5 + 41.3