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3 years ago

PLEASE HELPPPPPPPPPPPPPPP

Mathematics

1 answer:

deff fn [24]3 years ago

3 0

Answer:

6 x 2 = 12

8 x 4 = 32

6 x 2 = 12

________ +

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A circle is centered at the point (-7, -1) and passes through the point (8, 7).

Lisa [10]

Answer:

Part 1) The radius of the circle is 17 units

Part 2) The point (-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 from a circle's center to any point on the circle is called the radius of the circle

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

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

Find the distance (radius) between the points (-7,-1) and (8,7)

substitute in the formula

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

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

$r=\sqrt{(289}\ units$

$r=17\ units$

step 2

Find the equation of the circle in center radius form

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

where

(h,k) is the center of the circle

r is the radius of the circle

we have

$(h,k)=(-7,-1)\\r=17\ units$

substitute

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

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

Remember that

If the point (-15,y) lie on the circle, then the ordered pair must satisfy the equation of the circle

substitute the value of x=-15 in the equation

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

solve for y

$(-8)^2+(y+1)^2=289$

$64+(y+1)^2=289$

$(y+1)^2=225$

take square root both sides

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

$y=-1+15=14\\y=-1-15=-16$

therefore

The point (-15,14) and (-15,-16) lies on this circle

see the attached figure to better understand the problem

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4 years ago

two bicycle riders start a race at the same time. the function f(x) and g(x) give the distance in miles that each rider has trav

iragen [17]

Answer:

https://jbarrueta.weebly.com/uploads/5/3/2/9/53297595/lesson2.2.2.pdf

Step-by-step explanation:

here's a link

4 0

3 years ago

A line passes through the points (–3, –4) and (6, 2).

Dmitrij [34]

The slope I got was 6/9 which can be reduced down to 2/3

8 0

3 years ago

Which equation represents this situation in form of y=mx+b

atroni [7]

Answer:

y=mx+b is 32x53 divide by 10 and =8.31=b+423.1/74=mx=647.bd-5634=y add them up and is your answer.

Step-by-step explanation:

6 0

3 years ago

Can an someone please help me with number 14

Mnenie [13.5K]

Well the answer would be

6x2 ( 2 is an exponent) -7

8 0

3 years ago

Read 2 more answers