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Fynjy0 [20]
3 years ago
6

Please help on this one?

Mathematics
1 answer:
ki77a [65]3 years ago
5 0

m = \frac{1}{2},   (x₁ , y₁) = (-2, -4)

y - y₁ = m(x - x₁)

y -(-4) = \frac{1}{2}(x - (-2))

y + 4 = \frac{1}{2}(x +2)

y + 4 = \frac{1}{2}x + 1

     y = \frac{1}{2}x - 3

Answer: A

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Find the volume of the pyramid. Write your answer as a fraction or mixed number.
tia_tia [17]

Answer:

V=lwh /3

Step-by-step explanation:

6 0
3 years ago
Suppose that we don't have a formula for g(x) but we know that g(3) = −5 and g'(x) = x2 + 7 for all x. (
True [87]
So it tells us that g(3) = -5 and g'(x) = x^2 + 7.

So g(3) = -5 is the point (3, -5)
Using linear approximation
g(2.99) is the point (2.99, g(3) + g'(3)*(2.99-3))

now we just need to simplify that
(2.99, -5 + (16)*(-.01)) which is (2.99, -5 + -.16) which is (2.99, -5.16)
So g(2.99) = -5.16 

Doing the same thing for the other g(3.01)
(3.01, g(3) + g'(3)*(3.01-3))
(3.01, -5 + 16*.01) which is (3.01, -4.84)
So g(3.01) = -4.84

So we have our linear approximation for the two. 

If you wanted to, you could check your answer by finding g(x).  Since you know g'(x), take the antiderivative and we will get 
g(x) = 1/3x^3 + 7x + C
Since we know g(3) = -5, we can use that to solve for C
1/3(3)^3 + 7(3) + C = -5 and we find that C = -35
so that means g(x) = (x^3)/3 + 7x - 35

So just to check our linear approximations use that to find g(2.99) and g(3.01)

g(2.99) = -5.1597
g(3.01) = -4.8397

So as you can see, using the linear approximation we got our answers as
g(2.99) = -5.16
g(3.01) = -4.84
which are both really close to the actual answer.  Not a bad method if you ever need to use it. 
5 0
3 years ago
What is the equation of the line with a slope of -3 and passes through the point (-6,-3)
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Answer:

f(x) = -3x - 21

Step-by-step explanation:

Graphed this equation and it passes through (-6, -3), also known as Point A.

7 0
2 years ago
An airplane took 5 hours to travel 3,420 kilometers.how many kilometers did the plane travel in one hour
tino4ka555 [31]

Answer:

684 Hours.

Step-by-step explanation:

If the plane travelled that distance in 5 hours, then all you need to do is divide the distance by 5 to get the distance travelled in one hour. This is obviously presuming that the speed travelled was constant or that this is an average figure.

3420/5 = 684.

8 0
3 years ago
Read 2 more answers
Quick guys, I need some help on this
worty [1.4K]

Answer:

I think c

(not sure though)

3 0
2 years ago
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