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Whitepunk [10]
4 years ago
11

When Mr. Smith kicks a football, it has a vertical speed of 20 m/s, and its height, h in meters after t seconds can be modeled b

y the equation h=20t−5t^2 .
Part A.
How long is the football in the air before it lands on the ground?
​
seconds

Part B
In how many seconds will the football reach its maximum height?
​
seconds
​
​Part C
​What is the maximum height that the football will reach?
​
meters
Mathematics
1 answer:
adelina 88 [10]4 years ago
6 0

Answer:

look up desmos and do it on there it helps alot

Step-by-step explanation:

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So my teachers must be smoking the goods behind the counter or some **** what is 1 + 1
Anestetic [448]

Answer:

2

Step-by-step explanation:

1 + 1 = 2

8 0
3 years ago
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What are the solutions of this quadratic equation?
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Rashau made a rectangular frame for her latest oil painting. The length is 28 centimeters more than triple the width. The perime
postnew [5]
The length is about 28 more than three times the width. Denoted as (a) width, and as (b) the length. Then move on to lay the system of equations, as done below:

\begin{cases}2a+2b=136\\b=3a+28\end{cases}
\begin{cases}2a+2b=136|:2\\b=3a+28\end{cases}
\begin{cases}a+b=68\\b=3a+28\end{cases}
\begin{cases}a+3a+28=68\\b=3a+28\end{cases}
\begin{cases}4a=40|:4\\b=3a+28\end{cases}
\begin{cases}a=10\\b=3*10+28\end{cases}
\begin{cases}a=10\\b=58\end{cases}

The short side has a length of 10 cm, and 58 cm long.
5 0
3 years ago
CAN YOU PLS HELP MEEEE
laiz [17]

Answer:

10x - 2y

Step-by-step explanation:

<em>simplify</em><em> </em><em>the</em><em> </em><em>expression</em><em>.</em><em> </em>

<em>8x</em><em>–</em><em>2y</em><em> </em><em>+</em><em> </em><em>x</em><em> </em><em>+</em><em> </em><em>x</em><em> </em>

<em>combine</em><em> </em><em>numbers</em><em> </em><em>that</em><em> </em><em>have</em><em> </em><em>the</em><em> </em><em>same</em><em> </em><em>variables</em><em> </em>

<em>8x</em><em> </em><em>+</em><em> </em><em>x</em><em> </em><em>+</em><em> </em><em>x</em><em> </em>

<em>*</em><em>those</em><em> </em><em>x</em><em> </em><em>have</em><em> </em><em>1</em><em> </em><em>coefficient</em><em> </em><em>each</em><em>.</em><em> </em>

<em>it</em><em> </em><em>will</em><em> </em><em>be</em><em> </em><em>8x</em><em>+</em><em>1x</em><em>+</em><em>1x</em><em> </em><em>=</em><em> </em><em>10x</em><em> </em><em>then</em><em> </em><em>–</em><em>2y</em>

<em>10x</em><em>–</em><em>2y</em><em>.</em>

Hope it helps :)

8 0
3 years ago
Read 2 more answers
A.) 660<br> B.) 418.93<br> C.) 320.1
Dahasolnce [82]
418.93 which is answer choice b
3 0
3 years ago
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