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The length is 28ft. W=15 so you’d subtract 30 from 86 and get 56. Then divide 56 by 2 and get 28 which is the length. You can check this by adding 15+15+28+27 together and see if it equals 86 which it does.
Answer:
Grace is the faster swimmer
Step-by-step explanation:
because Grace can do 25 m in .5 min, whereas Melanie can do 65 m in 1 minute, or 32.5 m in .5 min.
equation-
300 ÷ 5 = 60
325 ÷ 5 = 65
Answer:
we can write an equation wich describes the amount of aspirin in her system in respect to the hours (x)
a(x) = 520 * 0.78^x
78% is what's left on respect to one hour before and the "to the power of x" part describes how often we multiply/how many hours have passed
actually, if you haven't learned a better method yet, you could just grab your calculator, and type in 520 * 0,78
calculate it
then repeat multiplying the last answer till you go just below 80. the number of steps is the number of full hours passed.
this would take 8 steps
do you need a more sophisticated method to nail it down to the minute?
got no clue how far you are with the whole topic yet.
anyways, hope this helps you :)
Answer:
Commutative property of multiplication
Step-by-step explanation:
Properties of Multiplication:
Commutative:
Multiplying two or more factors in a different order.
ex: 2 x 4 x 5 = 2 x 5 x 4
Associative:
Multiplying factors in parenthesis with different grouping. usually to make the problem simpler.
ex: (13 x 4) x 25 = 13 x (4 x 25)
Distributive:
Distributing a multiplicand to factors in parenthesis.
ex: 2(4 - 1) = 2(4) - 2(1)
ex: 2(8+7) = 2(8) + 2(7)
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-Chetan K
