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3 years ago

Ab over 2 equal 2a minus 1,express a in terms of b

Mathematics

1 answer:

sasho [114]3 years ago

6 0

$\frac{ab}{2}$ = 2a - 1

2( $\frac{ab}{2}$ ) = 2(2a - 1) multiplied both sides by 2

ab = 4a - 2 distributed the 2 on the right side

ab - 4a = -2 subtracted 4a from both sides

a(b - 4) = -2 factored out "a" from the left side

a = $\frac{-2}{b - 4}$ divided (b - 4) on both sides

Answer: a = $\frac{-2}{b - 4}$

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3 years ago

Find the 10th term of the sequence 1,10,19,28,...

Rainbow [258]

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3 years ago

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kondaur [170]

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3 years ago

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

Leya [2.2K]

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

Can someone help with this

kari74 [83]

Answer:

I think D option is write hope you help

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3 years ago