2 years ago

If 6 pennies are in each pile how many pennies are in nine piles?

Mathematics

2 answers:

Dimas [21]2 years ago

8 0

Answer:45

Step-by-step explanation:

Tanzania [10]2 years ago

4 0

Answer:

This is so easy it's basically 6x9 which isssss, 54 lol,

Step-by-step explanation:

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If Kerry wants her stopping distance not to exceed 75 ft, then the range of speeds (in mi/h) can she travel is obtained as follows:

$v+ \frac{v^2}{20} \leq75 \\ \\ 20v+v^2\leq1,500 \\ \\ v^2+20v+100\leq1,500+100 \\ \\ (v+10)^2\leq1,600 \\ \\ |v+10|\leq\sqrt{1,600} \\ \\ -40\leq v+10\leq40 \\ \\ -40-10\leqv\leq v\leq40-10 \\ \\ -50\leq v\leq30$

Therefore, the range of speed she can travel is $v\leq30\ mi/hr$
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3 years ago