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3 years ago

Pls help asap i have to turn in in 30 minutes will give brainliest

Mathematics

1 answer:

KengaRu [80]3 years ago

8 0

3 3/4 Hope I helped have a good day!

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Find the equation of the circle with a diameter whose end points are (-1,-2) and (-3,2)

Sergeeva-Olga [200]

Answer:

The equation of the circle with a diameter whose end points are (-1,-2) and (-3,2) is

$x^{2} +y^{2}+4x-1=0$

Step-by-step explanation:

Explanation:-

Step 1:-

The equation of the circle having center and radius is

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

here center is (h,k) and radius is r

Given diameter whose end points are (-1,-2) and (-3,2)

The diameter of the circle is passing through the center of the circle

so center of the circle = midpoint of two end points

$(\frac{-1 +(-3) }{2} ,\frac{-2+2 }{2} )$

$(-2,0)$

therefore center (h,k) = (-2,0)

Step 2:-

we have to find the radius of the circle

the radius of the circle = the distance from center to the one end point

i.e., C P = r

Given one end point is P(-3,2) and center C(-2,0)

The distance formula of two points are

$\sqrt{(x_{2}-x_{1} ) ^{2}+ (y_{2}-y_{1} ) ^{2}}$

$r=\sqrt{{(-3)-(-1) ) ^{2}+ (2-(-2)) ^{2}}$

$r=\sqrt{5}$

Step 3:-

center (h,k) = (-2,0) and

radius $r=\sqrt{5}$

The standard form of circle equation

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

$(x-(-2))^2+(y-0)^2=\sqrt{5} ^2$

on simplification is

$x^{2} +y^{2}+4 x-1=0$

5 0

3 years ago

Choose the value for x that makes the proportion true.A.3B.4C.5D.6

kondor19780726 [428]

Answer:

B) 4

Step-by-step explanation:

It would be 4 because when you cross multiply 16*x and 1*64, you get 4/1.

7 0

2 years ago

Pls pls help for math

yan [13]

Answer and Step-by-step explanation:

The answer would be D. 82%.

All we need to do is add together the amount that can swim.

We do this because all of the numbers added together equals 1, so the parts that are split off represent the percentages (in decimal form) of the total amount of people.

0.34 + 0.48 = 0.82.

Multiply by 100 and we get 82%.

#teamtrees #PAW (Plant And Water)

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3 years ago

Andrea put 2 quarts of water and 1 1/2 cups of lemon juice in a pitcher. How many total liquids are in the pitcher

gizmo_the_mogwai [7]

Key: 1 quart = 4 cups

So two quarts would equal 8 cups...So we add...

8 + 1 1/2 = 9 1/2

9 1/2 is the total. ^^

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3 years ago

What is the next number in the pattern? 1, 4, 7, 10,_

Firlakuza [10]

Answer:

Step-by-step explanation:

Throughout this pattern, each previous number is adding 3.

Hope this helps! :)

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3 years ago