2 years ago

Jan takes her three children and two neighbors children to a matinee.all of the children are under age 13.

Mathematics

1 answer:

podryga [215]2 years ago

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A scientist is growing bacteria in a lab for study. One particular type of bacteria grows at a rate of y=2t^2+3t+500. A differen

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ANSWER

Approximately after 15 minutes.

EXPLANATION

The growth rate of the first bacteria is

$y = 2 {t}^{2} + 3t + 500$

The growth rate of the first bacteria :

$y = 3 {t}^{2} + t + 300$

To find the time that, there will be an equal number of bacteria, we equate the two equation;

$3 {t}^{2} + t + 300 = 2 {t}^{2} + 3t + 500$

$3 {t}^{2} - 2 {t}^{2} + t - 3t + 300 - 500 =00$

${t}^{2} - 2t - 200= 0$

We solve for t to get,

$t = 15.177$

$t = - 13.177$

We discard the negative value.

This implies that,

$t \approx15$

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3 years ago

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Minus 3y both sides
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A new skateboard cost $150. You have a 30% off coupon. How much money did you save with your coupon?

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Usain runs 5km in 30 minutes how many minutes does it take him to run 8km at the same speed

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