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3 years ago

Write the equation of the line that passes through the points (-3,-7) and (-1,3)

Mathematics

1 answer:

Lina20 [59]3 years ago

4 0

Answer:

This is the answer of your question.

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At the market, 5 light bulbs cost $9dollar <br> How much do 7 light bulbs cost?

svet-max [94.6K]

9/5= 1.80
1.80x5= 9
so, each light bulb costs 1.80
1.80x7=12.6
the answer is 12.6

6 0

3 years ago

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A city has a population of 2,000 if 1,500 residents speak Spanish what percent of the population is Spanish speaking

prisoha [69]

Answer:

75%

Step-by-step explanation:

Find the ratio 1500 to 2000; it is 0.75.

75% of the population is Spanish speaking.

5 0

3 years ago

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A population of insects increases at the rate of 200 10t 13t2 what is the change in the population of insects between day 0 and

RUDIKE [14]

Answer:

762 days

Step-by-step explanation:

Given

$Rate = 200 + 10t + 13t^2$

Let the rate be R.

So the rate change with time is represented as:

$\frac{dR}{dt} = 200 +10t + 13t^2$

So:

$dR = (200 + 10t + 13t^2)\ dt$

To get the number of insects between day 0 and day 3, we need to integrate dR and set the bounds to 0 and 3

i.e.

$dR = (200 + 10t + 13t^2)\ dt$ becomes

$\int\limits^3_0 {dR} \, =\int\limits^3_0 (200 + 10t + 13t^2)\ dt$

$R =\int\limits^3_0 (200 + 10t + 13t^2)\ dt$

Integrate

$R = 200t + \frac{10t^2}{2} + \frac{13t^3}{3} [3,0]$

Solve for R by substituting 0 and 3 for t

$R = (200*3 + \frac{10*3^2}{2} + \frac{13*3^3}{3}) - ( 200*0 + \frac{10*0^2}{2} + \frac{13*0^3}{3})$

$R = (200*3 + \frac{10*9}{2} + \frac{13*27}{3}) - (0 + \frac{10}{2} + \frac{0}{3})$

$R = (200*3 + 5*9 + 13*9) - (0)$

$R = 600 + 45 + 117 - 0$

$R =762$

<em>The population of insect between the required interval is 762</em>

4 0

3 years ago

Need help with this please

nevsk [136]

A would be "each point does not always give the same amount of tickets. B would be "the price for each pound of tuna appears to be the same".

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3 years ago

Which statements are true about the curve? Check all

Shalnov [3]

Answer

The answer is 2,3,5

3 0

3 years ago