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Deffense [45]
3 years ago
12

Y=3x+7 y=-4x+21 graphing

Mathematics
1 answer:
liberstina [14]3 years ago
7 0

y = 3(2) + 7

y = 13

(2,13)

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1. A community pool that is shaped like a regular pentagon needs a new cover for the winter months. The radius of the pool is 20
ludmilkaskok [199]
1)<span>960 square feet
</span>2) B. 25 cm ^2
The area of a regular pentagon can be found using the formula.
A=\frac{1}{4} \sqrt{5(5+2 \sqrt{5})} *s^2
s=side length
A≈960 square feet

The apothem of a square is half of the side length. 2.5*2=5.  5^2 = 25cm^2


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Mr North spent $144,00 to build a fence around the perimeter of bis vegetable garden.He paid $6.oo per yard for fencing.
NikAS [45]
First, you could see the amount of fence he could buy, or 144/6, which would be 24, so Mr. North can buy 24 yards of fencing.
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And now, to consider which plan would be the best, it would probably be a 6x6 design, because it gives the biggest area to the vegetable garden, and is easy to move around.
width = 6
length = 6
area = 36 square yards (6×6)
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Find the x intercepts of the parabola with vertex (6,-5) and y- int (0,175)
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Hmmm so.. .it could be either a horizontal or vertical parabola, let's assume or use a vertical parabola vertex equation then... namely, the squared variable being "x".

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\bf \textit{at the x-intercepts, y = 0, thus }\qquad 0=5(x-6)^2-5&#10;\\\\\\&#10;5=5(x-6)^2\implies \cfrac{5}{5}=(x-6)^2\implies \pm\sqrt{1}=x-6&#10;\\\\\\&#10;\pm 1+6=x\implies x=&#10;\begin{cases}&#10;7\\&#10;5&#10;\end{cases}
7 0
3 years ago
Graph the following inequality and then select the correct graph below. y ≥ 3x - 3
Nikolay [14]

Answer:

Given the inequality: y\geq 3x-3

The related equation for the given equation is:

y = 3x -3                ......[1]

x -intercepts: The point where the line crosses the x-axis

Substitute the value of y= 0 in [1] to solve for x;

0 = 3x -3

Add both sides 3 we get;

0 + 3 = 3x -3 +3

Simplify:

3 = 3x

Divide both sides by 3 we get;

\frac{3}{3} = \frac{3x}{3}

Simplify:

1 = x

or x = 1

x-intercept is (1 , 0)

y-intercepts: The point where the line crosses the y-axis

Substitute the value of x= 0 in [1] to solve for y;

y =3(0) -3 = 0-3

Simplify:

y = -3

y-intercept = (0 , -3)

When your inequality symbol:

  • Greater than (>)  or Greater than or equal to (\geq), then the solution region is above the boundary line.
  • Less than (<) or Less than or equal to(\leq), then your solution region is below the boundary line.

Also,  when the symbol is:

"> , < ,  then we draw a dashed line,

"\leq , \geq",  then we draw a solid line.

Since, the given inequality i.e  y\geq 3x-3  symbol is "\geq" , draw a solid line and shade above the line:

As you can see the given inequality graph below in the attachment

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URGENT!! HELP WITH THIS MULTIPLE CHOICE MATH PROBLEM (MORE COMING...)
ch4aika [34]

Your answer would be 0,6.

- Because if you look at it correctly you see the right is at 0 and the top is at 6

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3 years ago
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