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2 years ago

6

A marathon is 26.2 miles long. If a runner can run 7.5 miles in 60 minutes, how many minutes will it take to run the full marath

on? Round your answer to the nearest minute!

1 answer:

olganol [36]2 years ago

5 0

210 I think because theres 3.4 of 60minutes/ hrs and 3.4 times 60 is 209.6 and it said round to the nearest minute which is 9 so 210

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Evaluate the determinant for the following matrix: 1 4 4 5 2 2 1 5 5

Elina [12.6K]

A Laplace expansion along the first row gives

$\begin{vmatrix}1&4&4\\5&2&1\\1&5&5\end{vmatrix}=1\begin{vmatrix}2&1\\5&5\end{vmatrix}-4\begin{vmatrix}5&1\\1&5\end{vmatrix}+4\begin{vmatrix}5&2\\1&5\end{vmatrix}$
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3 years ago

Rewrite the function by completing the square. h(x)= 4 x^{2} -36 x +81

noname [10]

Answer:

4(x-4.5)^2

Step-by-step explanation:

h(x)=4x^2-36x+81

=4(x^2-9x)+81

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=4(x-4.5)^2

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3 years ago

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Snezhnost [94]

Answer:

Newtons

Step-by-step explanation:

Joules measure electrical power and celcius and Kelvin measures temperature.

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3 years ago

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Which three lengths could be the lengths of the sides of a triangle?

Talja [164]

I am assuming the answer could be C

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3 years ago

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A parachutist's speed during a free fall reaches 180 kilometers per hour. What is this speed in meters per second? At this speed

Darya [45]

Answer:

Speed of the parachutist is meters per second $2.083$ meter per second

Distance travelled in 2 seconds $4.167$ meter

Step-by-step explanation:

Speed of the parachutist is kilometers per hour = 180

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Distance travelled in 2 seconds $2.083 *2 = 4.167$ meter

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2 years ago