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Alex17521 [72]
4 years ago
7

Can someone please help me with this? It's due tomorrow. Doesn't have to be all of them, I just need an explanation on how to do

this

Mathematics
1 answer:
snow_lady [41]4 years ago
5 0

First, look at the number inside the parenthesis, for the first problem the answer would be 3 since you have (x+3). Then, move the graph up or down that number. Since you got three for the first one, you move every point on the graph up 3. For the second one, the number is -3, so you move every point down 3. Just keep doing the same thing with every graph. Then you're done!

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A circle is centered at the point (-7, -1) and passes through the point (8, 7).The radius of the circle is____ units. The point
denis-greek [22]

Answer:

Part 1) The radius of the circle is r=17 units

Part 2) The points (-15,14) and (-15,-16) lies on this circle

Step-by-step explanation:

step 1

Find the radius of the circle

we know that

The distance between the center of the circle and any point on the circle is equal to the radius of the circle

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

we have

(-7, -1) and (8, 7)

substitute

r=\sqrt{(7+1)^{2}+(8+7)^{2}}

r=\sqrt{(8)^{2}+(15)^{2}}

r=\sqrt{289}

r=17\ units

step 2

Find out the y-coordinate of point (-15,y)

The equation of the circle in standard form is equal to

(x-h)^2+(y-k)^2=r^2

where

(h,k) is the center

r is the radius

substitute the values

(x+7)^2+(y+1)^2=17^2

(x+7)^2+(y+1)^2=289

Substitute the value of x=-15 in the equation

(-15+7)^2+(y+1)^2=289

64+(y+1)^2=289

(y+1)^2=289-64

(y+1)^2=225

square root both sides

(y+1)=(+/-)15

y=-1(+/-)15

y=-1(+)15=14

y=-1(-)15=-16

therefore

we have two solutions

point (-15,14) and point (-15,-16)

see the attached figure to better understand the problem

8 0
3 years ago
Which is equivalent to 80% ?
Katen [24]

Answer:

d 4/5

Step-by-step explanation:

is the best answer of d 4/5

3 0
3 years ago
Read 2 more answers
I need to find the perimeter
Sergio [31]

Answer:

22x-12

Step-by-step explanation:


5 0
4 years ago
the graph of y= 6cos (x-2) - 3 is obtained by shifting the graph of y=6 cos x-3 horizontally 3 units to the right. true or false
Neporo4naja [7]

Answer:

false.

Step-by-step explanation:

Given the function g(x) = f(x − k), can be sketched f(x) shifted k units horizontally. if k is negative, the function is shifted k units to the left.

Given the function g(x) = f(x) + k, we can say that the function is translated vertically upwards k times. If k is negative, the function is translated vertically downwards k times.

In this case, the function is translated two units to the right and 3 units down because the number "-3" is negative.

So it's false. The graph is translated three units downwards and 2 units to the right.

5 0
4 years ago
Read 2 more answers
Can someone please help me solve this I need to see if I got it correct
nignag [31]
First covert the yards to feet so you will have 317 feet so you do 317*317=100489
100489*8=803912 feet
5 0
4 years ago
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