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3 years ago

Help please !!!! no idea

Mathematics

1 answer:

OleMash [197]3 years ago

8 0

Hello There,
I best answer would be: A.
This is because it isn't doing anything else except going in a horizontal line.
Please give me brainliest.

~Haley

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Find the dr/d(theta) for:<br>r = (theta)sin(theta) + cos(theta)

maxonik [38]

$r=\theta\sin\theta+\cos\theta$

$\dfrac{\mathrm dr}{\mathrm d\theta}=\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}+\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}$

By the product rule,

$\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}=\dfrac{\mathrm d(\theta)}{\mathrm d\theta}\sin\theta+\theta\dfrac{\mathrm d(\sin\theta)}{\mathrm d\theta}=\sin\theta+\theta\cos\theta$

and

$\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}=-\sin\theta$

So we have

$\dfrac{\mathrm dr}{\mathrm d\theta}=\sin\theta+\theta\cos\theta-\sin\theta$

$\implies\dfrac{\mathrm dr}{\mathrm d\theta}=\theta\cos\theta$

4 0

3 years ago

Solve 4d = 1/3a. 4/3b. 1/7c. 1/12d. 1/4

ELEN [110]

4d = 1/3
d = 1/3/4
d = 1/12
Thus, c is the correct choice.

4 0

4 years ago

Use the information given to enter an equation in standard form.

Greeley [361]

Answer:

y = -2x + 25

Step-by-step explanation:

A standard equation can be in slope-intercept form: y = mx + b

m is the slope, b is the y-intercept.

Plug in the given slope.

y = -2x + b

To find b, plug in the given point (9, 7).

7 = -2(9) + b

Multiply.

7 = -18 + b

Add 18 to both sides to find b.

25 = b

Plug this into your standard equation.

y = -2x + 25

Check by plugging in the given point again.

7 = -2(9) + 25

7 = -18 + 25

7 = 7

Your answer is correct!

Hope this helps!

3 0

3 years ago

Which formula represents a linear function?

Art [367]

Answer:

I'm thinking it's B but I might be wrong.

Sorry if it's wrong

7 0

2 years ago

Look at pic <br> 14 points

Korvikt [17]

Answer:

The Second One I Think

Step-by-step explanation:

By what I understand that would be the one that is in standard form

7 0

3 years ago