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Nitella [24]
3 years ago
9

The cable for a certain suspension bridge is modeled by a parabola with vertex (0,0) at the center of the bridge. At a point tha

t is 150 ft from the center of the bridge, the height of the cable is 30 ft. Which equation represents the height of
the cable at a distance x feet from the center?
Mathematics
2 answers:
Paul [167]3 years ago
4 0

Answer:

Step-by-step explanation:

h(x)=ax^2

Given h=30 when x=150 we get

a(150)^2=30

a=30/22500=1/750 so

h(x)=x^2/750

frutty [35]3 years ago
3 0

Answer:

its b

Step-by-step explanation:

^u^

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If g(a) = (a + 4)2 and h(b) = 2b - 7,<br> what is h(g(2))?
masha68 [24]

First find g(2).

g(2) = (2+4)2 = 12

Because g(2) is 12, h(g(2)) = h(12).

h(12) = 2(12)-7 = 17

answer: 17

4 0
3 years ago
Elisa's mom teaches at preschool. There is 1 teacher for every 12 students at the preschool. There are 276 students at the presc
Pavlova-9 [17]

12 students/1 teacher  = 276 students/x teachers

Students are on top of the ratio and teachers are on the bottom of the ratio.  It must remain the same on both sides of the equation.

12 x = 276

divide by 12

x =23


8 0
3 years ago
EXPERT HELP I'LL GIVE BRAINLIEST: EXPLAIN THE ANSWER
Katyanochek1 [597]

Answer:

C

Step-by-step explanation:

Hey There!

So the answer is C because essentially answer choice c is saying that you can predict what the amount of problems that the next kid would complete in 30 minutes because all of the samples have a mean of 15.6-15.9 or that all of the samples are reliable because all of the means are near each other

And if you didnt know the mean is the average of all of the numbers in the sample

There C is your answer

8 0
3 years ago
Read 2 more answers
Find the area of the triangle <br><br> Area of triangle
Dima020 [189]

Answer:

9??

Step-by-step explanation:

Sorry this could be wrong

6 0
3 years ago
Integration using part formula<br> <img src="https://tex.z-dn.net/?f=%5Cint%5Climits%20%7Bx%5Enlogx%7D%20%5C%2C%20dx" id="TexFor
liq [111]

Answer:

Integration of I= \int {x^{n}logx \, dx=[\frac{logx}{n+1} x^{(n+1)}]-[\frac{1}{(n+1)^{2}}x^{(n+1)}]

Step-by-step explanation:

Given integral is I= \int {x^{n}logx \, dx

Take logx=t

x=e^{t}

x^{n}=e^{nt}

\frac{1}{x} dx=dt

dx=xdt

dx=e^{t}dt

I= \int (e^{nt})(t)(e^{t})\, dt

I= \int (e^{(n+1)t})(t)\, dt

Using integration by part,

I= (t)\int [e^{(n+1)t}]\, dt-\int[\frac{d}{dt}{t}\times\int (e^{(n+1)t})]\\\\I= (t) [\frac{1}{n+1}e^{(n+1)t}]-\int[1\times\frac{1}{n+1}e^{(n+1)t}]\,dt\\\\I=[\frac{t}{n+1}e^{(n+1)t}]-[\frac{1}{(n+1)^{2}}e^{(n+1)t}]

Writing in terms of x

I=[\frac{t}{n+1}e^{(n+1)t}]-[\frac{1}{(n+1)^{2}}e^{(n+1)t}]

I=[\frac{logx}{n+1}e^{(n+1)logx}]-[\frac{1}{(n+1)^{2}}e^{(n+1)logx}]

I=[\frac{logx}{n+1}e^{logx^{(n+1)}}]-[\frac{1}{(n+1)^{2}}e^{logx^{(n+1)}}]

I=[\frac{logx}{n+1} x^{(n+1)}]-[\frac{1}{(n+1)^{2}}x^{(n+1)}]

Thus,

Integration of I= \int {x^{n}logx \, dx=[\frac{logx}{n+1} x^{(n+1)}]-[\frac{1}{(n+1)^{2}}x^{(n+1)}]

3 0
3 years ago
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