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Karolina [17]
3 years ago
6

What is the equation of the line that passes through points (-3, 0.5) and (3, 0.5

Mathematics
1 answer:
snow_lady [41]3 years ago
4 0

Answer:

y = 0.5

Step-by-step explanation:

y = mx + b

m = (y2-y1)/(x2-x1)

m = (0.5 - 0.5)/(3-(-3))

m = 0/6

m = 0

y = mx + b

y = 0x + b

0.5 = 0(3) + b

b = 0.5

therefore

y = 0x + 0.5

y = 0.5

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A school wishes to enclose its rectangular playground using 480 meters of fencing.
Harlamova29_29 [7]

Answer:

Part a) A(x)=(-x^2+240x)\ m^2

Part b) The side length x that give the maximum area is 120 meters

Part c) The maximum area is 14,400 square meters

Step-by-step explanation:

The picture of the question in the attached figure

Part a) Find a function that gives the area A(x) of the playground (in square meters) in terms of x

we know that

The perimeter of the rectangular playground is given by

P=2(L+W)

we have

P=480\ m\\L=x\ m

substitute

480=2(x+W)

solve for W

240=x+W\\W=(240-x)\ m

<u><em>Find the area of the rectangular playground</em></u>

The area is given by

A=LW

we have

L=x\ m\\W=(240-x)\ m

substitute

A=x(240-x)\\A=-x^2+240x

Convert to function notation

A(x)=(-x^2+240x)\ m^2

Part b) What side length x gives the maximum area that the playground can have?

we have

A(x)=-x^2+240x

This function represent a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

The x-coordinate of the vertex represent the length that give the maximum area that the playground can have

Convert the quadratic equation into vertex form

A(x)=-x^2+240x

Factor -1

A(x)=-(x^2-240x)

Complete the square

A(x)=-(x^2-240x+120^2)+120^2

A(x)=-(x^2-240x+14,400)+14,400

A(x)=-(x-120)^2+14,400

The vertex is the point (120,14,400)

therefore

The side length x that give the maximum area is 120 meters

Part c) What is the maximum area that the playground can have?

we know that

The y-coordinate of the vertex represent the maximum area

The vertex is the point (120,14,400) -----> see part b)

therefore

The maximum area is 14,400 square meters

Verify

x=120\ m

W=(240-120)=120\ m

The playground is a square

A=120^2=14,400\ m^2

8 0
3 years ago
Points P, Q, and S are collinear . If bisects PQR, what is the measure of PQT?
stepladder [879]
719.81 and dont mind the rest of this it said i need 20 words lol and can u do my question plz ?
5 0
2 years ago
Two squares overlap. The area of the overlapped region is 1/4 of the small square's area and is 2/9 of the large square's area.
guajiro [1.7K]

Answer:

Step-by-step explanation:

.25+.24+2^=1.8-25/2=12

7 0
3 years ago
A circular garden has a circumference of
omeli [17]

This solution to this problem is predicated on the fact that the circumference is just: 2\pir. A straight line going through the center of the garden would actually be the diameter, which is well known to be two times the radius of the circle, so we can say that the circumference is just:

d\pi

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The area of a circle is \pi r^2, which means we can just plug in the radius and find our area:

A=\pi r^2 \implies \\ A=\pi (4xy^2)^2\implies \\ A= 16\pi x^2y^4

So, we have found our area(16 \pi x^2 y^4) and the problem is done.

6 0
3 years ago
0.08 divided by0.5216
Naya [18.7K]
0.08 / 0.5216

Answer: 0.15337423312
8 0
3 years ago
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