My sister needs help with her homework. We tried 900 but it was not the right answer. Plz help!

Mathematics

2 answers:

katrin [286]3 years ago

8 0

Answer:

Ellie counted 888 plates

Step-by-step explanation:

Since Ellie counted 111 plates from 8 states, you only have to multiply 111 plates by the 8 states.( 111×8 = 888)

I hope this helps :)

damaskus [11]3 years ago

3 0

If your talking about estimating to the nearest hundred it would be 900 is your talking nearest ten it would be 890.

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Help me llliad plz neeeeeeed help

Lapatulllka [165]

Lets get started :)

Diameter = 2.5 ft
Radius = $\frac{diameter}{2} = \frac{2.5}{2} = 1.25$

a) The Circumference formula of a circle is given in the picture below, we can plug-in the given information

C = 2 $\pi$ (1.25) or 2.5 $\pi$
≈ 7.85 ft
(we can leave the answer in terms of pi { $\pi$ })

b) We divide the total number of distance the tire will travel by the circumference to find how many times the tire will roll

$\frac{5280}{circumference} = \frac{5280}{2.5 \pi }$
(I have used the value in feet because we found the circumference in feet units and notice that I took the value of circumference to be 2.5 $\pi$ instead of 7.85, to increase accuracy)

672.2

The tire will rotate 672 times (a tire cannot roll a decimal times, so we take to the nearest whole number) to travel 1 mile