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4 years ago

The price of a notebook has dropped to $3.20 today. yesterday's price was $3.45 . find the percentage decrease.

1 answer:

4 0

So the difference is .25, so the equation will be:

-.25 / 3.45 = x / 100
(cross multiply)
3.45x = -25
(divide both sides by 3.45)
x = -7.24

So there was a 7.24% decrease in the price

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What is the equation of the line that passes through the point (2,7) and has a slope of 6?

BARSIC [14]

Answer (assuming it can be in point-slope form):

$y-7 = 6(x-2)$

Step-by-step explanation:

Use the point-slope formula $y-y_1 = m (x-x_1)$ to write the equation of the line in point-slope form. All you need to do is substitute $m$ , $x_1$ , and $y_1$ for real values.

Since $m$ represents the slope, substitute 6 in its place. Since $x_1$ and $y_1$ represent the x and y values of one point the line intersects, take the x and y values of (2,7) and substitute them into the formula as well. So, substitute 2 for $x_1$ and 7 for $y_1$ . This gives the following equation and answer:

$y-7 = 6(x-2)$

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3 years ago

Twice the difference of 3x and y increased by five times the sum of x and 2y

Grace [21]

I believe it is 11x+8y

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4 years ago

Help!!! I will give brainliest!!!! ASAP!

-BARSIC- [3]

Answer:

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Step-by-step explanation:

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3 years ago

The table shows the number of

Anna35 [415]

According to the table given, the rate of change is of 9.

The rate of change is given by the change in the output divided by the change in the input.

In this problem:

The input is the number of bouquets.

The output is the number of flowers.

Taking two of the points, (3,27) and (5,45), we have that:

$m = \frac{45 - 27}{5 - 3} = \frac{18}{2} = 9$

Hence, the rate of change is of 9, which would be verified taking any pair of two points.

You can learn more about rate of change at brainly.com/question/25823744

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3 years ago