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bearhunter [10]
3 years ago
14

A wheel turn 90 revolution per minute How many degrees dose it turn through in 1 second?

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
5 0

Answer:

1

Step-by-step explanation:

trust me

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Simplify the expression. 7x+3(x-2)-4x+8<br><br> please help quickly!!!
ludmilkaskok [199]

7x + 3(x-2) - 4x + 8

7x + 3x - 6 - 4x + 8

6x + 2

4 0
3 years ago
Read 2 more answers
10. Determine the open interval(s) on which the function f(x) = 12x - x^3 is increasing.
Gre4nikov [31]

Answer:

\large\boxed{x\in(-2,\ 2)}

Step-by-step explanation:

f(x)=12x-x^3

Calculate the derivative of the function:

f'(x)=\left(12x-x^3\right)'=(12x)'-\left(x^3\right)'=12-3x^2

Calculate the zeros of the derivative:

f'(x)=0\Rightarrow12-3x^2=0\qquad\text{add}\ 3x^2\ \text{to both sides}\\\\3x^2=12\qquad\text{divide both sides by 3}\\\\x^2=4\to x=\pm\sqrt4\\\\x=\pm2

Let's check the derivative sign:

f'(x)>0\iff12-3x^2>0\qquad\text{use the distributive property}\\\\-3(x^2-4)>0\\\\-3(x^2-2^2)>0\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\\\-3(x-2)(x+2)>0\\^{\qquad x=2\qquad x=-2

Sketch a parabola open down

(before the brackets there is the number -3 < 0)

Look at the picture.

Where the derivative is negative, the function decreases.

Where the derivative is positive, the function increases.

Therefore your answer is:

x\in(-2,\ 2)

3 0
3 years ago
Please help me! (slopes) (brainliest)
Whitepunk [10]
Y=65x+5, i think but I don’t know for sure
6 0
3 years ago
I have two problems that I need help with. I'll attach them below.
otez555 [7]
1. Is $235,000+ 4.2% =244,870
4.2% out of $235,000 is $9,840
Where i got $244,870
12x20=240
So 20 years= 240 months
So I divide $244,870 by 240 months
is $1,020.291667
Which is $1,020.29 cents. 
If you multiply that $1,020.29x240=$244,869.60 round to nearest dollar 60 cents is over 50 which would make it $2444,870.


3 0
3 years ago
Can a pentagon be a prism and pyramid?!
RoseWind [281]
A pentagon is a 2d shape, so no, it can't be a prism or a pyramid.
4 0
3 years ago
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