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3 years ago

8

What is the slope of the line that passes through the points (1, -9)(1,−9) and (4, -7)(4,−7)? Write your answer in simplest form

.

1 answer:

AleksandrR [38]3 years ago

3 0

Answer:

The direct answer is 0.

No more solution

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As a salesperson, you are paid $100 per week plus $3 per sale. This week you want your pay to be at least $160. Write an inequal

Eva8 [605]

Subtract +23+ from both sides

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The arc of the parabola y = x^2 from (3,9) to (4,16) is rotated about the y-axis. Find the area of the resulting surface. Please

Hitman42 [59]

Answer:

156.5

Step-by-step explanation:

Thinking process:

The area can be calculated using the formula:

$S = \int\limits^4_3 {2\pi x\sqrt{1+}(2x)^{2} } \, dx$

We let the substitution take place.

Therefore, we let $u = 1 + 4x^{2}$

Thus, $du = 8dx.$

So,

$xdx = \frac{1}{8}du$

Also, the interval of the integration changes to [ 37, 65]

Thus,

$S = \int\limits^4_3 {2\pi \sqrt{1+4x^{2} } } \, dx \\= \int\limits^65_35 {2\pi \sqrt{\frac{1}{8}u } } \, dx$

= $\frac{1}{6} [ 65^{\frac{3}{2}-37^{\frac{3}{2} } }$

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3 years ago

Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?

WITCHER [35]

<span>f(x) = ax2+bx+c, is quadratic equation
</span><span>function opening downward if the a<0,
</span><span>kf(x) = -x², a= -1<0
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</span>

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A group of people were asked if they had run a red light in the last year. 386 responded "yes", and 137 responded "no". Find the

ludmilkaskok [199]

Answer: The probability would 0.35770234986 or 35%

Step-by-step explanation:

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