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3 years ago

Please show steps!!!

Mathematics

1 answer:

just olya [345]3 years ago

4 0

Answer:

there is no price for which weekly revenue would be 1800

Step-by-step explanation:

If there is a solution to the equation ...

r = 1800 = -4p² +40p +1287

then there is a solution to ...

4p² -40p +513 = 0

Comparing this to the standard form quadratic equation

$ax^2+bx+c=0$

we can match coefficients to see that ...

a = 4
b = -40
c = 513

The discriminant of a quadratic is ...

$d=b^2-4ac\\\\d=(-40)^2-4(4)(513) = 1600-8208 = -6608$

When we fill in the numbers and evaluate, we find the discriminant is negative. This tells us that solutions to the equation are complex—there are no real solutions, meaning there is no price that will give $1800 weekly revenue.

_____

A graph shows the highest weekly revenue obtainable at any price is $1387, so there is no price that will give revenue of $1800.

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Nancy purchased some bed sheets for $ 36 they were on sale 25% off.What was the original price of the bed sheets?

mrs_skeptik [129]

Let

x-------> the original price of the bed sheets

we know that

Nancy purchased some bed sheets for $ $36$ they were on sale $25$ % off

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therefore

the answer is

the original price of the bed sheets was $ $48$

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Answer:

Step-by-step explanation:

Volume of the rectangular tank = Length * Width * Height

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Height = 60cm

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Volume = 50*30*60

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Ann [662]

Answer:

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Step-by-step explanation:

Given points are $(-2,-2)\ and\ (4,6)$ . We need to find the midpoint of the line segment.

The formula of finding midpoints between the point $(x_1,y_1)\ and\ (x_2,y_2)$ is

$(\frac{x_1+x_2}{2}),(\frac{y_1+y_2}{2})\ Equation(1)$

W have points $(x_1,y_1)=(-2,-2)$ . And $(x_2,y_2)=(4,6)$

Let us plug the value in Equation (1)

$(\frac{-2+4}{2} ),(\frac{-2+6}{2})$

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So, the midpoint of points $(-2,-2)\ and\ (4,6)$ is $(1,2)$ .

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