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Bond [772]
3 years ago
8

Please help i don’t know how to do this and what are the answers

Mathematics
1 answer:
inn [45]3 years ago
6 0

Answer:

the slope of pq is m=-13/8

and for rs is m=-1

yes thes line are parallel

Step-by-step explanation:

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A rectangular parking area measuring 5000 ft squared is to be enclosed on three sides using​ chain-link fencing that costs ​$5.5
kaheart [24]

Answer:

Dimensions: 75.3778 ft and 66.3325 ft

Minimum price: $1658.31

Step-by-step explanation:

Let's call the length of the parking area 'x', and the width 'y'.

Then, we can write the following equations:

-> Area of the park:

x * y = 5000

-> Price of the fences:

P = 2*x*5.5 + y*5.5 + y*7

P = 11*x + 12.5*y

From the first equation, we have that y = 5000/x

Using this value in the equation for P, we have:

P = 11*x + 12.5*5000/x = 11*x + 62500/x

To find the minimum of this function, we need to take its derivative and then make it equal to zero:

dP/dx = 11 - 62500/x^2 = 0

x^2 = 65000/11

x = 250/sqrt(11) = 75.3778 ft

This is the x value that gives the minimum cost.

Now, finding y and P, we have:

x*y = 5000

y = 5000/75.3778 = 66.3325

P = 11*x + 62500/x = $1658.31

5 0
3 years ago
Why do people give other people brainliest for wrong answers? ​
svet-max [94.6K]

Answer:

because its 2021

Step-by-step explanation:

Yehhh

8 0
3 years ago
Read 2 more answers
Which is the complete factorization of this expression -25x-25
Annette [7]

Factor −25x−25

−25x−25

=−25(x+1)

Answer:

−25(x+1)

7 0
3 years ago
Mark drew two triangles and 8 arrows as part of a set of 13 shapes. The only other type of shape in the set is a circle. What fr
luda_lava [24]

Answer:

3/13

Step-by-step explanation:

First...

What we know

1. There is a set of 13 shapes.

2. With 2 triangles, 8 arrows, and circles.

Next...

Take the number of triangles and arrows and add them up.

2 + 8 = 10

Finally...

Convert it into the fraction 10/13 and subtract it by the total 13/13.

This results 3/13.

3 0
3 years ago
How much of earth's surface is covered by water,including both salt and fresh water?
Crank

Answer:

About 71% of Earth's surface is covered in water.

Step-by-step explanation:

About 97% of Earth's water is salt water.

About 3% of Earth's water is fresh water.

7 0
3 years ago
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