Given that x = 5 and y = 9, evaluate the expression using -4xy - 6x2 + 2x2y - 6y

Mathematics

1 answer:

Damm [24]3 years ago

4 0

Answer:

Step-by-step explanation:

Put the numbers in place of the corresponding variables and do the arithmetic.

-4(5)(9) -6(5)^2 +2(5)^2(9) -6(9) = -180 -150 +450 -54 = 66

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You've decided to go cave diving. the route between a and b in 8025 meters long and the average diver can swim 15 meters per min

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$\text{The route between A and B is 8025 meters.}\\
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\text{And an average diver can swim 15 meters per minute.}\\
\text{we need to find the time it will take to complete diving.}\\
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\text{by the time distance formula, we know that}\\
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\text{Time}=\frac{\text{Distance}}{\text{Speed}}\\
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\text{so using this the time taken to complete the dive is}\\
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\text{Time}=\frac{8025}{15}\\
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\Rightarrow \text{Time}=535 \text{ minutes}$