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3 years ago

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Mathematics

2 answers:

trasher [3.6K]3 years ago

8 0

Answer: b or d

Step-by-step explanation:

Nonamiya [84]3 years ago

8 0

Answer:

Step-by-step explanation:

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Plz help asap this is due in one hour

joja [24]

Answer:

A car travels 20km in 15 minutes, what is the average speed that the car travelled at?

the average speed that the car travelled at is 80km per hour

Step-by-step explanation:

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4 years ago

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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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4 years ago

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1. The average cow brain weighs 21b (pounds) which is 32oz (ounces). How many ounces (oz) are in 5lbs? Use a proportion to conve

VashaNatasha [74]

Answer:

80 oz

Step-by-step explanation:

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3 years ago

The circumference of a circle is 15.2mm.

bulgar [2K]

Answer:

circumference of circle (c)=15.2mm

length of radius (r)=?

we know,

c= 2×pi×r=2×3.14×r

or,15.2/6.28=r

or,2.4=r

2.4mm=r

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3 years ago

Simplify <img src="https://tex.z-dn.net/?f=%5Cfrac%7B4x-10%7D%7B2%7D" id="TexFormula1" title="\frac{4x-10}{2}" alt="\frac{4x-10}

murzikaleks [220]

I think the answer is 2x-5
I hope it helps

3 0

2 years ago