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MaRussiya [10]
3 years ago
9

2. A football is kicked in the air and its height, in metres, is given by the function h(t)=−4.9t^2+19.6t+1 , where t is measure

d in seconds.
a) determine the time it took to reach the maximum height

b) determine the maximum height of the ball
Mathematics
1 answer:
Rus_ich [418]3 years ago
3 0

Answer:

27

Step-by-step explanation:

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if the hieght and radius of the cone is tripled then find the ratio of Volume of the new cone and of that of original
solniwko [45]
\bf \textit{volume of a cone}\\\\
V=\cfrac{\pi r^2 h}{3}\quad 
\begin{cases}
r=radius\\
h=height\\
-----\\
r=\stackrel{3\times r}{3r}\\
h=\stackrel{3\times h}{3h}
\end{cases}\implies V=\cfrac{\pi (3r)^2(3h)}{3}
\\\\\\
V=\cfrac{\pi (3^2r^2)(3h)}{3}\implies V=\cfrac{\pi (9r^2)(3h)}{3}\implies V=27\left( \cfrac{\pi r^2 h}{3} \right)

notice the original, and the new one, with the tripled "r" and "h" is just, whatever the original was times 27, namely 27 times as large as the original.
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3 years ago
What is the unit rate for the ratio 100 points/ 4 games?
wlad13 [49]

Answer:c

Step-by-step explanation:

 

7 0
3 years ago
Directions: Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).. Th
Anuta_ua [19.1K]

Answer

Find out the The numerical value of A - B  and the numerical value of B - A .

To prove

As given

The expression 113.47 - (43.72 - 26.9) represents A.

The expression 113.47 - (26.9 - 43.72) represents B .

Thus

A - B =  113.47 - (43.72 - 26.9)  - ( 113.47 - (26.9 - 43.72))

First solving the bracket terms.

A - B =  113.47 - (43.72 - 26.9)  -  113.47  + (26.9 - 43.72)

        = 113.47 - 16.82 - 113.47 - 16.82

        =  113.47  - 113.47 - 16.82 - 16.82

        = -33.64

Therefore the value of A- B is -33.64 .

Thus

B - A = 113.47 - (26.9 - 43.72) - (113.47 - (43.72 - 26.9))

First solving the bracket terms.

B - A = 113.47 - (26.9 - 43.72) - 113.47 + (43.72 - 26.9)

        =  113.47 + 16.82 - 113.47 + 16.82

        = 33.64

Therefore the value of the A - B is -33.64 and B - A is 33.64 .

6 0
3 years ago
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slava [35]
Linear simply means the higest power of any placeholder is 1 and positive

first one, all 1, linear, A

2nd one
that is actually 6y^-1, that is negative exponent so not linear, so B

3rd one: correct, that is just x^1 times 1/2 minus 3 so linear, so A

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5th one, fist degree, linear, A




A
B
A
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3 years ago
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Answer:

88.00 and subtract 28 and the 3 shirts were

Step-by-step explanation:

answer 60

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3 years ago
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