Which shows 54^2 − 46^2 being evaluated using the difference of squares method?

Mathematics

2 answers:

tekilochka [14]3 years ago

6 0

<span>54^2 − 46^2 = (54 + 46)(54 − 46) = (100)(8) = 800

hope it helps</span>

dolphi86 [110]3 years ago

6 0

A difference of squares is of the form (a^2-b^2) and always factors to:

(a^2-b^2)=(a+b)(a-b)

So in this case:

(54^2-46^2)=(54+46)(54-46)=(100)(8)=800

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The probability that a battery will last 10 hr or more is 0.9, and the probability that it will last 15 hr or more is 0.12. Give

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Answer:

Answer is 13.3%

Step-by-step explanation:

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The 120 which have lasted 15 hours or more must have lasted at most 10 hours or more, so they are part of the bunch that lasted 10 hours of more.

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