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irakobra [83]
3 years ago
10

Please ASAP. Find the value of u.

Mathematics
1 answer:
shusha [124]3 years ago
5 0

Answer:

The answer is B 62

Step-by-step explanation:

I just divid 124 by 2

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Pls help me i will give brainliest!!!!!!!!!!!!!
adell [148]

Answer:

x= 2b-a

Step-by-step explanation:

6 0
3 years ago
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Over what interval is the graph of f(x) = –(x + 8)2 – 1 decreasiang<br><br><br><br> help
Degger [83]
Please use " ^ " to denote exponentiation:  

<span>f(x) = –(x + 8)^2 – 1 
Find the first derivative:  f '(x) = -2(x+8)(1)
Set this = to 0:  -2(x+8) = 0
solve for x:  x = -8
Divide the number line into subintervals based upon x=-8:

(-inf, -8) and (-8, inf)

Choose a test value for x from each interval, e. g., -10 from the first interval and 20 from the second.

Subst. this test value into the derivative, shown above.

If the result is + the function is incr on that interval; if - the fn. is decr.

Questions welcome!</span>
5 0
3 years ago
Benjamin threw a rock straight up from a cliff that was 48 ft above the water. If the height of the rock​ h, in​ feet, after t s
fomenos

Answer: It will take 4 seconds  for the rock to hit the​ water.

Step-by-step explanation:

Given : Benjamin threw a rock straight up from a cliff that was 48 ft above the water.

If the height of the rock​ h, in​ feet, after t seconds is given by the equation

h = -16 t^2+ 52 t + 48

To find : Time taken for the rock to hit the​ water.

When rock hit the water height becomes zero , i.e. put h = 0 , we get

-16 t^2+ 52 t + 48 =0

Divide equation by 2 , we get

-8t^2+26t+24=0

The Laue of x for ax²+bx+c =0 is x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

So , t=\frac{-26\pm\sqrt{(26^{2}-4(-8)(24))}}{2(-8)}

t=\dfrac{-26\pm 38}{-16}\\\\ t=-\dfrac{-26+38}{-16}=-0.75\ \ t=\dfrac{-26-38}{-16}=4

Since t cannot be negative , so t= 4

Hence, it will take 4 seconds  for the rock to hit the​ water.

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3 years ago
Find the value of x
shepuryov [24]

Answer:

sqrt(21)

Step-by-step explanation:

x = sqrt(7*3) = sqrt(21)

3 0
3 years ago
What is 3.5% of 15,587?
Murrr4er [49]

Answer:

54,554.5

Step-by-step explanation:

Have you heard about this amazing thing called a calculator?

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3 years ago
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