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3 years ago

Write an exponential function in the form of y=ab^x passing through the points (0,6) and (2,96)

1 answer:

3 0

Here you have an equation with two unknown constants, a and b, plus 2 sets of points through which the graph goes.

Second point: 96 = a(b)^2
First point: 6 = a(b)^0 Then a = 6.

With a = 6, we can now write: 96 = 6b^2. Then b^2 = 16, and b=4.

Then y =6(4)^x (answer)

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4 years ago

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If a car’s speed is 70 miles per hour on a road surface with a drag factor of 0.50 and with a breaking efficiency of 85% (n = .8

hichkok12 [17]

Answer:

About 384.3 feet

Step-by-step explanation:

The formula for that is given by,

$S= \sqrt{30 \times d \times f \times n}$

Where,

S is the speed of the car

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Putting the values we get,

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3 years ago

I need to answer this before 11:59 pm by today , i will give you 10 points!!!

Firdavs [7]

Answer:

For first part, t= 0.18 sec or 3.4 sec.

For second part, t= 3.7 sec.

Step by step answer:

First part:

Set h(t) = 17and solve for tt.

-16t²+ 58t + 7= 17

-16t² + 58t - 10 = 0

Solve this quadratic equation for t. You should get 2 positive solutions. The lower value is the time to reach 17 on the way up, and the higher value is the time to reach 17 again, on the way down.

Second part:

Set h(t) = 0 and solve the resulting quadratic equation for t. You should get a negative solution (which you can discard), and a positive solution. The latter is your answer.

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3 years ago