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Serjik [45]
2 years ago
7

F(x) = -x^2 + 5x – 2 Find f(-4)

Mathematics
1 answer:
disa [49]2 years ago
8 0

Answer:

2

Step-by-step explanation:

if f(4), than -4^2=-16

5(4)=20

-16+20-2=2

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Find the volume of the given solid: Bounded by the cylinder y^2+z^2=4 and the planes x = 2y, x = 0, z = 0 in the first octant.
rodikova [14]

The solution would be like this for this specific problem:

<span>V = ∫ dV </span><span>
<span>= ∫0→2 ∫ 0→π/2 ∫ 0→ 2·r·sin(φ) [ r ] dzdφdr </span>
<span>= ∫0→2 ∫ 0→π/2 [ r·2·r·sin(φ) - r·0 ] dφdr </span>
<span>= ∫0→2 ∫ 0→π/2 [ 2·r²·sin(φ) ] dφdr </span>
<span>= ∫0→2 [ -2·r²·cos(π/2) + 2·r²·cos(0) ] dr </span>
<span>= ∫0→2 [ 2·r² ] dr </span>
<span>= (2/3)·2³ - (2/3)·0³ </span>
<span>= 16/3 </span></span>

So the volume of the given solid is 16/3. I am hoping that these answers have satisfied your query and it will be able to help you in your endeavors, and if you would like, feel free to ask another question.

3 0
3 years ago
A. Angle Q corresponds to angle Y
Aleksandr [31]

Answer:

B: XZ corresponds to QR

Hope this helps

7 0
3 years ago
Read 2 more answers
What kind of slope is (6,-3)and (-4,-3)
Pavel [41]

Answer:

0

Step-by-step explanation:

Slope = y2- y1/x2 - x1

Given

x1 = 6

y1 = -3

x2 = -4

y2 = -3

Slope = -3 -(-3) /-4 - 6

= -3 + 3 /-10

= 0/10

= 0

This means that the line of the slope is horizontal

6 0
2 years ago
A $146 tent was sold for 20% off. There was a sales tax of 4%. What was the discount
Korolek [52]
The discount is $35.00
The sales tax is $8.25
So the final cost of the tent is
146.00-35.00=$111.00
111+8.25= 119.25

Your answer is $119.25
7 0
2 years ago
Read 2 more answers
StartRoot 58 EndRoot is about greater than StartRoot 42 EndRoot.
Levart [38]

Answer:

  1.135 or 17.5%

Step-by-step explanation:

√58 ≈ 7.616

√42 ≈ 6.481

  7.616 -6.481 = 1.135

√58 is about 1.135 greater than √42. This is about 1.135/6.481 = 17.5% of the value of √42.

__

√58 is about 1.135, or 17.5%, greater than √42.

5 0
3 years ago
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