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3 years ago

Which of the following is a solution of x2 − 8x = –27?

Mathematics

2 answers:

Dominik [7]3 years ago

8 0

Answer:

Its 4 plus i square root of eleven

Step-by-step explanation:

Sergeu [11.5K]3 years ago

4 0

Its 4 plus i square root of eleven

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Consider the point P = (3,8) and the line L, given by the equation y = 3x -4.

Lisa [10]

Answer:

If we are working in a coordinate plane where the endpoints has the coordinates (x1,y1) and (x2,y2) then the midpoint coordinates is found by using the following formula:

midpoint=(x1+x22,y1+y22)

Step-by-step explanation:

8 0

3 years ago

State of the given functions are inverses

bonufazy [111]

Answer:

1) They are not inverses

2) They are inverses

Step-by-step explanation:

We need to find the composition function between these functions to verify if these functions are inverses. If f[g(x)] and g[f(x)] are equal to x they are inverses.

1)

Let's find f[g(x)] and simplify.

$f[g(x)]=\frac{1}{2}g(x)+\frac{3}{2}$

$f[g(x)]=\frac{1}{2}(4-\frac{3}{2}x)+\frac{3}{2}$

$f[g(x)]=\frac{7}{2}-\frac{3}{4}x$

As f[g(x)] is not equal to x, these functions are not inverses.

Let's find f[g(x)] and simplify.

$f[g(n)]=\frac{-16+(4n+16)}{4}$

$f[g(n)]=\frac{-16+4n+16}{4}$

$f[g(n)]=\frac{4n}{4}$

$f[g(n)]=n$

Now, we need to find the other composition function g[f(x)]

Let's find g[f(x)] and simplify.

$g[f(x)]=4(\frac{-16+n}{4})+16$

$g[f(x)]=-16+n+16$

$g[f(x)]=n$

Therefore, as f[g(n)] = g[f(n)] = n, both functions are inverses.

I hope it helps you!

3 0

3 years ago

Bryson and lilly played a game of darts and lilly scored 4 more the Bryson the total of the score was 180 how many points did ea

ki77a [65]

Well, we know that Lilly scored 4 more points than Bryson. So we could write that
Lilly's score = Bryson's score plus 4. Or L=B+4 Now we also know that 
Lilly's score + Bryson's score = 180. So L+B=180 Now We can substitute in L in the second equation to get B+B+4=180 so B+B=176 and B=88 The we put B into the first equation and find that 
L=92.

4 0

3 years ago

Read 2 more answers

Which of the following statements are equivalent to the statement "price increased by 1/2 "?

Rom4ik [11]

The correct answers are:
B)
E)

4 0

3 years ago

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A circle has a radius of 6. An arc in this circle has a central angle of 48 degress. What is the length of the arc?

notsponge [240]

Answer: $1.6\pi$

Step-by-step explanation:

If a circle has a radius of 6, then the perimeter of the circle is 12pi, or about 37.68. A circle has 360 degrees. Thus, the arc takes up 48/360 of the circle. Thus, simply multiply $\frac{48}{360} * 12\pi$ to get 5.024 or 1.6pi.

Hope it helps <3

3 0

3 years ago

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