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charle [14.2K]
3 years ago
5

What number must be added to the expression below to complete the square ? x2+7x

Mathematics
1 answer:
stellarik [79]3 years ago
6 0

Answer:

you must add 2 to the equation

Step-by-step explanation:

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Answer:

y=8x-3

Step-by-step explanation:

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Divide C values/T values that will tell if it is constant or not and that is the reason.

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Find two additional roots of P(x)=0.<br><br> 13+sqrt 3 and 7i
vova2212 [387]
So, x = 13, x = √3 and x =7i.

now, recall that for an EVEN radical, there are two possible roots, namely is say √3 is say hmmm some value "a", that means that a*a = √3, however, -a*-a is also √3, therefore, ±√3 are two valid values, and therefore -√3 is another one.

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4 years ago
100 points! Please help ASAP! Look at the picture attached. I will mark brainliest
cricket20 [7]

Answer:

  • 116 ft

Step-by-step explanation:

Midsegment is the half the length of the parallel side of the triangle.

So parallel sides of the triangles, which are the side of the base of the pyramid are:

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a whisper volume as a room that allows two people to stand on opposite side of the template luckily shape long and hear each oth
Yakvenalex [24]

Answer:  120 ft

<u>Step-by-step explanation:</u>

The Ellipse equation is:   \dfrac{(x-h)^2}{a^2}-\dfrac{(y-k)^2}{b^2}=1       where

  • (h, k) is the center
  • "a" is the horizontal radius
  • "b" is the vertical radius
  • c is the distance from the center to the foci: |a² - b²| = c²

Given: horizontal diameter = 122  →  horizontal radius = 61 = a

          vertical diameter = 22  →  vertical radius = 11 = b

Foci (c):   61² - 11² = c²

            3721 - 121 = c²

                  3600 = c²

                    ±60 = c

Let (h, k) = (0, 0)

Then the foci are located at -60 and +60.

The distance between them is 60 + 60 = 120

3 0
4 years ago
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