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masha68 [24]
2 years ago
11

Pls help this is homework

Mathematics
2 answers:
disa [49]2 years ago
6 0

Answer:

144

Step-by-step explanation:

First we can start by replacing x with the value (2)

120 + 18(2)  - 3 {(2)}^{2}

120 + 36 - 3(4)

120 + 36 - 12

Therefore the final answer is 144

Anna007 [38]2 years ago
3 0

Answer:

ans 144

Step-by-step explanation:

hope this helps

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Determine the equation of the tangent line to the given path at the specified value of t. (sin(7t), cos(7t), 2t9/2); t=1
Reptile [31]

Answer:

P(t) = {sin7, cos7, 2} + (7cos7, -7sin7, 9)(t-1)

Step-by-step explanation:

The equation of the tangent line to the given path at the specified value of t is expressed as;

P(t) = f(t0) + f'(t0)(t - t0)

f(t0) = (sin(7t), cos(7t), 2t^9/2)

at t0 = 1;

f(t0) = {sin7(1), cos7(1), 2(1)^9/2}

f(t0) = {sin7, cos7, 2}

f'(t0) = (7cos7t, -7sin7t, 9/2{2t^9/2-1}

f'(t0) = (7cos7t, -7sin7t, 9t^7/2}

If t0 = 1

f'(1) = (7cos7(1), -7sin7(1), 9(1)^7/2)

f'(1) =(7cos7, -7sin7, 9)

Substituting the given function into the tangent equation will give:

P(t) = f(t0) + f'(t0)(t - t0)

P(t)= {sin7, cos7, 2} + (7cos7, -7sin7, 9)(t-1)

The final expression gives the equation of the tangent line to the path.

4 0
3 years ago
Paige DeMarco is the Vice President for University Advancement at State University. She is responsible for the capital campaign
Ainat [17]

Answer: It has systematic sampling.

Step-by-step explanation:

Systematic sample is a method of statistics which includes the selection of elements from the ordered sampling.

It has equal probability of  each element.

It is done by choosing the starting point and selecting other elements after fixing the systematic or periodic interval.

She randomly selects the sixth name as a starting point and then selects every 100th subsequent name (106, 206, 306, etc.)

So, Sixth name is the starting point and then choosing the other elements after fixing an interval of 6.

So, it has systematic sampling.

6 0
2 years ago
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BaLLatris [955]

Answer:

y=-4x+8

Step-by-step explanation:

step 1

Find the slope

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m=\frac{y2-y1}{x2-x1}

take two points from the data

(0,8), and (8,-24).

substitute

m=\frac{-24-8}{8-0}

m=\frac{-32}{8}

m=-4

step 2

Find the equation of he line in slope intercept form

y=mx+b

we have

m=-4

b=8 ----> the y-intercept is given

substitute

y=-4x+8

8 0
3 years ago
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Reptile [31]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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