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Ratling [72]
3 years ago
15

Complete the square on the following quadratic

Mathematics
1 answer:
OlgaM077 [116]3 years ago
8 0
X² + 10x +2 = 0 .Complete the square of (x² + 10x + ??)
We know that (10x) is equal to twice the square root of the 1st (x) by ??
10x = 2.x.(??) and ?? = 5 and its square is 25. Then I have to add 25 and subtract 25 so that not to change the equation:
 (x² + 10x + 25) -25 +2 =0
 (x+5)² -23
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NEED MATH HELP NOW. I WILL BRAINLIEST
inn [45]

Answer:

see below (I hope this helps!)

Step-by-step explanation:

To find the distance between two points, we can use the formula d = √(x₂ - x₁)² + (y₂ - y₁)² where d = distance and (x₁, y₁), (x₂, y₂) are the points. Therefore:

d = √(-6 - 2)² + (2 - (-6))²

= √(-4)² + (8)²

= √16 + 64

= √80 ≈ 8.944272

5 0
3 years ago
Please help me evaluate the expression 10a + 7 if a =1/5
sattari [20]

Answer:

9

Step-by-step explanation:

10a+7

<u>10(1/5)</u> + 7

<u>2+7</u>

9

6 0
3 years ago
1\tfrac{2}{5} \div \frac{8}{9}<br> 1 5/2 ÷ 9/8
Alexandra [31]

Answer:

Step-by-step explanation:

What you wrote below the top line and the bottom line are not the same thing.

I think you really want the second line, but one can't be sure.

(1*2 + 5)/2 div (9/8)

7/2 // 9/8

7/2 * 8*9

7*8/18 = 56/18 = 28/9

If you really do want the top line (the latex) it is different.

1 2/5  div (8/9)     Is there such a thing as tfrac? I didn't know this but there is.

(1*5 + 2)5 // (8/9)

7/5 // 8/9             Invert the bottom fraction and multiply

7/5 * 9 / 8

63 / 40

1 23/40

5 0
3 years ago
Which is the equation of a line that passes through the points (1,4) and (-1,1)
horsena [70]

Answer:

The equation of the line is y = 3/2x + 5/2

Step-by-step explanation:

To find the equation of this line, start by using the two points with the slope formula to find the slope.

m(slope) = (y2 - y1)/(x2 - x1)

m = (4 - 1)/(1 - -1)

m = 3/(1 + 1)

m = 3/2

Now that we have the slope, we can use that and either point in point-slope form to find the equation.

y - y1 = m(x - x1)

y - 4 = 3/2(x - 1)

y - 4 = 3/2x - 3/2

y = 3/2x + 5/2

3 0
3 years ago
Determine the value of x for the following equations.
mafiozo [28]

Answer:

I'm so sorry!!! I don't understand how you are supposed to do this problem... I hope someone can help you out. Have a good day

Step-by-step explanation:

Super sorry

4 0
3 years ago
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