The midpoint formula is:
(point1 + point2)/2

1) (-2 + 12)/2 = 5

2) (-1 +5)/2 = 2
    (0+2)/2 = 1
     (2,1)

3) Sqrt of (x2-x1)^2 + (y2 - y1)^2
     sqrt of (7 -1)^2 + (-7 - 1)^2
     sqrt of (6)^2 + (-8)^2
     sqrt of 36 + 64
     sqrt of 100
     10

Hope this helps!

7 0

4 years ago

Two pumps were required to pump water out of a submerged area after a hurricane. Pump A , the larger if the two pumps, can pump

larisa86 [58]

I would say 100 hours i am not for sure cause i am a bit confused. sorry

7 0

3 years ago

Read 2 more answers

Write the equation in standard form of a circle with center (-7,2), tangent to the y-axis.

Vesna [10]

Answer:

$(x+7)^2+(y-2)^2=7^2$

Step-by-step explanation:

Tangent to y-axis means that the side of the circle TOUCHES the y axis.

Since the center is at (-7,2) and it touches the y axis, we can figure out the radius. It goes from (-7,2) to y-axis. Horizontally, the center is 7 units left of y-axis, so that is the radius ----- 7 units

The standard form of a circle is:

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

Where

(h,k) is the center

r is the radius

Putting the information into the form, we have:

$(x-h)^2+(y-k)^2=r^2\\(x-(-7))^2+(y-(2))^2=7^2\\(x+7)^2+(y-2)^2=7^2$

THis is the standard form.

7 0

3 years ago