Round 18.7 to the nearest whole number

Mathematics

2 answers:

Fynjy0 [20]3 years ago

4 0

18.7 rounded to the nearest whole number is 19.

Helen [10]3 years ago

3 0

It would be 19 since the .7 is over .5 you would round up.

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Ad is tangent to circle o at d. find ab. round to the nearest tenth if necessary

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Check the picture below.

$\bf 0=AB^2+6AB-121\implies \stackrel{\textit{using the quadratic formula}}{AB=\cfrac{-6 \pm \sqrt{6^2-4(1)(-121)}}{2(1)}}
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