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mylen [45]
3 years ago
5

0=-6t+69 help I don’t understand

Mathematics
1 answer:
elixir [45]3 years ago
3 0

Answer:

-3 (2t - 23)

Step-by-step explanation:

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The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 9
mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

<em>The height </em>h(t)<em> of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation </em>h(t) = 3 +90\cdot t -16\cdot t^{2}<em>, where </em>t<em> is time in seconds. After how many seconds will the ball be 84 feet above the ground. </em>

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

3+90\cdot t -16\cdot t^{2} = 84

16\cdot t^{2}-90\cdot t +81 = 0 (1)

By Quadratic Formula:

t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}

t_{1} = 4.5\,s, t_{2} = 1.125\,s

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

3 0
3 years ago
Three years ago the average price of a movie ticket was $8.75 and now it is $11.00. What was the annual multiplier and the perce
Andrei [34K]
Given:
Price of tickets:
3 years ago - 8.75 
now - 11

annual multiplier:

b³ = 11/8.75 
b = ∛11/8.75
b = 1.079

The annual multiplier is 1.079.

1.079 * 100% = 107.9%

107.9% - 100% = 7.9%

The percentage increase is 7.9%


8 0
3 years ago
Help i am stuck with a question that is asking for which list correctly orders a b c from least to graetest answer asap
Vinvika [58]

Answer:

what are the answer choices post it on the comments

Step-by-step explanation:

6 0
3 years ago
Mr. Taylor has 24 sports trophies. Of the trophies, 1
andreev551 [17]

Answer: 18 wrestling trophies.

Step-by-step explanation:

5 0
3 years ago
Find the equation of the line that passes through the points<br> (-4,-2) and (-4,5).
wariber [46]
Sorry I’m not sure if this is much help but the answer is undefined because (y2-y1)/(x2-x1) would equal 7/0 for your slope therefore there is no equation for these points
8 0
2 years ago
Read 2 more answers
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