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3 years ago

15

7

1 answer:

aleksklad [387]3 years ago

7 0

Answer:

I wanna say 4.6 kmph

Step-by-step explanation:

6(average) /2(hr)=3kmph

1.20(hr) / 6 (kmph) = 4.6

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What is 10 3/4-3 1/2

Rama09 [41]

The answer is 7 1/4
Or 29/4 as an improper fraction

3 0

3 years ago

Read 2 more answers

ABC has side lenths 20, 24, and 31. Do the side lenghts form a Pythagorean triple?

Brut [27]

No they don't.
Phythagorean triple is when the sum of the squares of two numbers is equal to the square of another number.

20^2 + 24^2 = 400 + 576 = 976
31^2 = 961

20^2 + 24^2 should have been equal to 31^2 but that's not the case. So, the side's length don't form a triple.

Hope it helped!

4 0

3 years ago

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:

<u>Explanation:</u>-

<u>Step 1:</u>-

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)

<u>Step 2:-</u>

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

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

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

$r=\sqrt{5}$

<u>Step 3</u>:-

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

I WILL MARK AS BRAINLIEST!!!A man selling hot dogs, french fries, and a soda as a combo meal at a fairground has to pay the coun

9966 [12]

Answer:

C

Step-by-step explanation:

I think the answer is C, I am not 100% sure tho

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3 years ago

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KIM [24]

Here ya go! Hope this helps!! :D

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3 years ago