3 years ago

I NEED HELP AGAIN PLEASE!!

Mathematics

1 answer:

Natali5045456 [20]3 years ago

6 0

Answer:

Step-by-step explanation:

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A train decreased its speed by 72 miles hour in 12 minutes. Find the average change in speed per minute.

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Answer:

6 mph

Step-by-step explanation:

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3 years ago

One of the factors of the polynomial x3 + 5x2 + 6x is (x2 + 3x). What is the other factor?

butalik [34]

Answer:

x+2

Step-by-step explanation:

Dividing the poly by the known factor:

x3+5x2+6x <u>| x2+3x</u>

-x3-3x2 x + 2 <- the answer is here

2x2+6x

-2x2-6x

To prove that, let's multiply the two factors and find the pylonomial back on:

(x2+3x).(x+2) = x3 + 2x2 + 3x2 + 6x = x3 + 5x2 + 6x

Tks your attention!

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10:30 am what is the time after 8 hours and 45 mins

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19:15 will be the new time

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3 years ago

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What is 6 divided by 1 fourth

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$6 \div \frac{1}{4} = 6\times 4 = \boxed {24}$

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3 years ago

What are the coordinates of the turning point for the function f(x) = (x - 1)3 - 3? A. (-1, -3)

Naddik [55]

ANSWER

The turning point is

$(1,-3).$

EXPLANATION

The function given to us is

$f(x) = (x - 1) ^{3} - 3$

At turning point,
$f '(x) = 0$

So we need to differentiate the given function and equate it to zero.

We using the chain rule of differentiation, we obtain,
$f '(x) =3 (x - 1) ^{2}$

We equate this to zero to obtain,

$3 (x - 1) ^{2} = 0$

We divide through by 3.

$(x - 1) ^{2} = 0$

We solve for x to get,

$x - 1 = 0$

$x = 1$

We substitute this x-value in to the function to obtain the corresponding y-value of the turning point.

$f(1) = (1- 1) ^{3} - 3$

$f(1) = 0 - 3$

$f(1) = - 3$

Therefore the turning point is

$(1,-3)$

C is the correct answer.

6 0

3 years ago

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