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3 years ago

PLEASE ANSWER URGENT

Mathematics

1 answer:

Stells [14]3 years ago

7 0

Answer:

Step-by-step explanation:

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Write an equation: Gianna finds $20 on the floor, and she starts saves her allowance

damaskus [11]

Answer:

5x +20

Step-by-step explanation:

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3 years ago

Rashaads sister gives him 2 packs of baseball cards per month each pack has 11 cards. She gives him 3 extra packs for his birth

Svetradugi [14.3K]

Answer:

297 cards in a year

Step-by-step explanation:

There are 12 months in a year, and he gets 2 packs of cards every month.

12*2 = 24 packs of cards a year

He gets 3 extra packs of cards for his birthday.

24 + 3 = 27 packs of cards

There are 11 cards in each pack.

27 X 11 = 297 cards in a year

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3 years ago

Given that 1,000 meters is equal to 1 kilometer, convert 16,000 meters to kilometers.

maw [93]

If 1000 meters is equal to 1 kilomiter, 16,000 meters it equal to 16 kilometers

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3 years ago

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Consider the function f(x)=x2e4x. f(x) has two inflection points at x = C and x = D with C≤D where C is and D is Finally for eac

fredd [130]

Answer:

the inflection points are

$x = -0.85, -0.14$

So,

$C = -0.85 \\D = -0.14$

It is concave down at the intervals

$(-\infty , -0.85] \cup [-0.14,\infty)$

And it would be concave up at

$(-0.85 , -0.14)$

Step-by-step explanation:

Remember that to find inflection points you need to find where

$f''(x) = 0$

Since

$f(x) = x^2 e^{4x}$

Then using the product and the chain rule you have that

$f'(x) = 2e^{4x} x(2x+1)$

And then, using again the chain rule and the product rule you have that

$f''(x) = 2e^{4x} (8x^2 +8x+1)$

Therefore you have to solve the equation

$8x^2 +8x+1 = 0$

Using the quadratic equation you get that there are two solutions, so the inflection points are

$x = -0.85, -0.14$

So,

$C = -0.85 \\D = -0.14$

Now remember that a function is concave up if the derivative is greater than zero and concave down if the derivative is less than zero. Therefor you have to solve these inequalties

$8x^2 +8x+1 < 0 \\8x^2 +8x+1 \geq 0$

And you would get that is concave down at the intervals

$(-\infty , -0.85] \cup [-0.14,\infty)$

And it would be concave up at

$(-0.85 , -0.14)$

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3 years ago

What is 44/12 as a simplified mixed fraction

Marat540 [252]

3 67/100

3 will stay a whole number so you put that as the whole number. 67 is 67 percent of a whole. so you put it over 100.

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4 years ago

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