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Dmitry_Shevchenko [17]
3 years ago
8

PLEASE HELP it’s so hard

Mathematics
1 answer:
Ahat [919]3 years ago
4 0

Answer:

1. #1 is in (0,4), #2 is in (5,4), #3(4,8)

2. 4ft

3. 5ft

4. 6.4ft

5. 3.5ft \

Step-by-step explanation:

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Which of the following definite integrals could be used to calculate the total area bounded by the graph of y = x^3 – 3x^2 + 2x
castortr0y [4]

Answer: The correct option is second, i.e. ,"2 times the integral from 0 to 1 of the quantity x cubed minus 3 times x squared plus 2 times x, dx".

Explanation:

The given equation is,

y=x^3-3x^2+2x

It can be written as,

f(x)=x^3-3x^2+2x

Find the zeros of the equation. Equation the function equal to 0.

0=x^3-3x^2+2x

x(x^2-3x+2)=0

x(x^2-2x-x+2)=0

x(x-2)(x-1)=0

So, the three zeros are 0, 1 and 2.

The graph of the equation is shown below.

From the given graph it is noticed that the enclosed by the curve and x- axis is lies between 0 to 2, but the area from 0 to 1 lies above the x-axis and area from 1 to 2 lies below the x-axis. So the function will be negative from 1 to 2.

The area enclosed by curve and x-axis is,

A=\int_{0}^{1}f(x)dx+\int_{1}^{2}[-f(x)]dx

A=\int_{0}^{1}f(x)dx-\int_{1}^{2}f(x)dx

From the graph it is noticed that the area from 0 to 1 is symmetric or same as area from 1 to 2. So the total area is the twice of area from 0 to 1.

A=2\int_{0}^{1}f(x)dx

A=2\int_{0}^{1}[x^3-3x^2+2x]dx

Therefore, The correct option is "2 times the integral from 0 to 1 of the quantity x cubed minus 3 times x squared plus 2 times x, dx".

3 0
3 years ago
What is the easiest math problem in the world
elixir [45]
Find the sum of 1 + 0 .
5 0
3 years ago
Read 2 more answers
The base of a triangle is four times its height. If the area of the triangle is 242 square millimeters , find its base and heigh
Goryan [66]

area= 1/2 b*h

242=1/2 4h*h=2h^2

h^2=121

h=11

b=4h=44

6 0
3 years ago
Y = 3x<br> y = -x + 4<br> write the question in coordinate form
postnew [5]

Answer:

(x,y) (1,3)

Step-by-step explanation:

3x=-x+4

+x +x

4x=4

*divide/simply*

x=1

y=3(1)

y=3✓

y=-1+4

y=3 ✓

3 0
3 years ago
HELP ASAP QUESTION IN PIC WILL GIVE BRAINLIEST
tangare [24]

Answer:

x=17

Step-by-step explanation:

Since these angles are supplementary, they will add up to 180 degrees, so you can set up the equation like this:

4x+8+104=180

First, combine like terms:

4x+(8+104)=180

4x+112=180

Next, subtract 112 from both sides:

4x+112(-112)=180(-112)

4x=68

Then, divide each side by 4:

4x(/4)=68(/4)

x=17

17 is your answer.

3 0
3 years ago
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