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3 years ago

27. Is the following relation a function?

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

8 0

Answer:

Step-by-step explanation:

27 No

28.A

you are to read it maximum and minimum point on the vertical axis

Sindrei [870]3 years ago

6 0

Hmm I’m not sure I understand

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If the endpoints of the diameter of a circle are (−8, −6) and (−4, −14), what is the standard form equation of the circle? A) (x

Andrei [34K]

Answer:

$\large\boxed{A.\ (x+6)^2+(y+10)^2=20}$

Step-by-step explanation:

The standard form of an equation of a circle:

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

(h, k) - center

r - radius

We have the endpoints of the diameter of a circle (-8, -6) and (-4, -14).

The midpoint of a diameter is a center of a circle.

The formula of a midpoint:

$\left(\dfrac{x_1+x_2}{2},\ \dfrac{y_1+y_2}{2}\right)$

Substitute:

$x=\dfrac{-8+(-4)}{2}=\dfrac{-12}{2}=-6\\\\y=\dfrac{-6+(-14)}{2}=\dfrac{-20}{2}=-10$

We have h = -6 and k = -10.

The radius is the distance between a center and the point on a circumference of a circle.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute (-6, -10) and (-8, -6):

$r=\sqrt{(-8-(-6))^2+(-6-(-10))^2}=\sqrt{(-2)^2+4^2}=\sqrt{4+16}=\sqrt{20}$

Finally we have

$(x-(-6))^2+(y-(-10))^2=(\sqrt{20})^2\\\\(x+6)^2+(y+10)^2=20$

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3 years ago

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alukav5142 [94]

The answer is 75! Explanation: Use the distance formula:)

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2 years ago

You are offered two jobs selling college textbooks. One company offers an annual salary of $30,000 plus a year-end bonus of 1% o

strojnjashka [21]

Answer:

at least $500,000 in sales

Step-by-step explanation:

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2 years ago

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Ket [755]

Y = 72.3x
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3 years ago

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What is 6 3/4 + 3 1/8=

Neko [114]

Answer:9 7/8

Step-by-step explanation:

You combine the whole numbers which are 6 and 3 the sum of that is 9 and then to add fractions you make the denominators the same so you do 2x3/4 =6/8 +1/8=7/8

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3 years ago