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2 years ago

At what points will the line y=x intersect the unit circle x^2+y^2=1

2 answers:

8 0

Graph it or solve 2x^2 = 1, x=+-1/Sqrt(2) = +-0.707
and the same for y.
Points are (-.707, -.707) and (.707,.707) or (1/Sqrt(2).....

irina [24]2 years ago

7 0

I dont know what grade are you in

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NEED THE ANSWER ASAP, PLEASE HELP!! What are the coordinates of the focus of the parabola?

qwelly [4]

Answer:

Vertex is (-8, 4) not one of the answers offered!

Step-by-step explanation:

Factor -1/8 out of the first two terms. Leave a space inside parentheses in which to add a number.

$y=-\frac{1}{8}(x^2 + 16x + \text{-----})-4$

Complete the square by squaring half the coefficient of x and adding it in the space.

$(\frac{16}{2})^2=64$

Add 64 in the space you made, then compensate for that at the end of the expression by subtracting $-\frac{1}{8}(64)=-8$

$y=-\frac{1}{8}(x^2+16x+64)-4+8\\y=-\frac{1}{8}(x+8)^2+4$

The x-coordinate of the vertex is the opposite of +8, the number inside the parentheses. The y-coordinate of the vertex is the number at the end of the expression.

V(-8, 4)

8 0

2 years ago

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irinina [24]

Off topic, I like your username :] good luck with whomever answers though <33

3 0

2 years ago

Find the average rate of change of f(x)=-x^2+2x+2 from x=2 to x=6. Simplify your answer as much as possible.

Eduardwww [97]

Answer:

- 6

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

$\frac{f(b)-f(a)}{b-a}$

Here [ a, b ] = [ 2, 6 ] , then

f(b) = f(6) = - 6² + 2(6) + 2 = - 36 + 12 + 2 = - 22

f(a) = f(2) = - 2² + 2(2) + 2 = - 4 + 4 + 2 = 2 , then

average rate of change = $\frac{-22-2}{6-2}$ = $\frac{-24}{4}$ = - 6

8 0

2 years ago

If ÷3 = 57 what is the value of n?

Mazyrski [523]

N would equal 57 × 3 which is 171.

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3 years ago

Read 2 more answers

The digits 2, 4, and 6 can be arranged to form six different three-

Amanda [17]

Answer:

246

264

426

462

624

642

Step-by-step explanation:

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2 years ago