3 years ago

I’ll mark ya brainless who can help?

Mathematics

2 answers:

Serhud [2]3 years ago

7 0

Answer:

Step-by-step explanation:

You have 12 marbles and you have 4 of each color.

lbvjy [14]3 years ago

5 0

Answer:

Step-by-step explanation:

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Determine the open intervals on which the graph of f(x) = x - 4cos x is concave upward or concave downward

bazaltina [42]

The graph of the function $f(x)$ is

concave upward, when $f''(x)>0;$
concave downward, when $f''(x)$

Find $f''(x):$

$f'(x)=(x-4\cos x)'=1+4\sin x;$

$f''(x)=4\cos x.$

Now:

1. when $4\cos x>0,$ the graph of the function is concave upward and this is for

$x\in \left(-\dfrac{\pi}{2}+2\pi k,\dfrac{\pi}{2}+2\pi k\right), \text{ where } k\in Z.$

2. when $4\cos x$ the graph of the function is concave downward and this is for

$x\in \left(\dfrac{\pi}{2}+2\pi k,\dfrac{3\pi}{2}+2\pi k\right), \text{ where } k\in Z.$

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3 years ago

Find the surface area of the triangular prism shown below.

VikaD [51]

Answer:

136

Step-by-step explanation:

5*7 = 35

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7*6 = 42

Add them all up

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2 years ago

WILL GIVE BRAINLIEST!

lesya [120]

Answer:

425

Step-by-step explanation:

225/24 then multiply the answer by 40

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3 years ago

Determine the domain of the function. <br> f(x) = 13/3-x

Sedbober [7]

Hi..... the domain(D) will be:

$\mathtt {f(x)=\dfrac{13}{3-x}\rightarrow \boxed{D=\{x\in R\,|\,x\neq 3\}}}$

Thanks... :)

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4 years ago

What is the slope of the line that contains the points in the table ?

zubka84 [21]

Answer: -2

Step-by-step explanation:

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3 years ago