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4 years ago

3 (2x - 5) + 20 + 5x i need help

Mathematics

1 answer:

igomit [66]4 years ago

5 0

Answer:

Step-by-step explanation:

3 (2x - 5) + 20 + 5x

= 6x - 15 + 20 + 5x

= 6x + 5x = 15 - 20

= 11x - 5

or if you are looking for x:

then x = -5 / 11

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3 years ago

Read 2 more answers

The mosquito population is a function of rainfall, and can be approximated by the formula N(x)=−x3+45x2+1000 where x is the numb

KiRa [710]

Answer:

Therefore the population will be maximum when x=30 inches.

Step-by-step explanation:

Given that, the mosquito population is a function of rainfall and can be approximated by the formula

$N(x)= -x^3+45x^2+1000$

where x is the number of inches of rainfall.

$N(x)= -x^3+45x^2+1000$

Differentiating with respect to x

$N'(x)= -3x^2+90x$

Again differentiating with respect to x

$N''(x)=-6x+90$

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Since at x=30, N''(x)<0, So at x=30, N(x) has maximum value.

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3 years ago