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3 years ago

7

Kristen is jogging in a straight line. She got a head start of 7 meters from the starting line, and she ran 2 meters every 9 sec

onds. After how many seconds will Kristen be
11 meters away from the starting line?

1 answer:

Marysya12 [62]3 years ago

6 0

Answer:

18 seconda

Step-by-step explanation:

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a) 6 m / 12 m = 1/2 is the right answer

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3 years ago

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3 years ago

Help please! Math Nation Section 6 Test Yourself Practice Tool.

aalyn [17]

Answer: D) $y=-5(x-5)^2+1125$

Step-by-step explanation:

Let x be the number of $2 increases in price and y be the revenue.

By using the given table , lets check all the options

A) $y=(x+5)^2-1125$

For x=1, y=1045

$y=(1+5)^2-1125=36-1125=-1089\\\\But\ 1045\neq-1089$

B) $y=(x-5)^2+1125$

For x=1, y=1045

$y=(1-5)^2+1125=14+1125=1139\\\But\ 1045\neq1139$

C) $y=-5(x+5)^2-1125$

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D) $y=-5(x-5)^2+1125$

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Hence, this is the quadratic equation that models the data.

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