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inna [77]
2 years ago
5

Which of the following is a solution of x^2 + 2x + 8?

Mathematics
1 answer:
zubka84 [21]2 years ago
5 0
X^2 + 2x + 8 = 0
x^2 + 2x = -8
x^2 + 2x + 1 = -8 + 1
(x + 1)^2 = -7
x + 1 = (+-) sqrt -7
x = -1 (+-) sqrt -7

solution is : x = -1 + i * sqrt 7
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What is equinlents to (3-2x)(4x-7)
natali 33 [55]

Answer:

-8x^2+26x-21

Step-by-step explanation:

6 0
2 years ago
The graph shows the total fare, y, for a taxi ride with respect to the miles traveled, x.
Setler79 [48]

Answer:

y-intercept = 3

The y-intercept represents the initial fee before any miles are traveled.

Step-by-step explanation:

By definition, the <u>y-intercept</u> is the y-coordinate of the point where the graph of the linear equation crosses the y-axis. The y-intercept is also the value of y when x = 0. The coordinates of the y-intercept is (0, <em>b </em>).

Looking at your graph, it shows that the line crosses the y-axis at (0, 3). Therefore, the y-intercept = 3.

The y-intercept represents the initial fee before any miles are traveled. This means that the taxi ride already has a set amount of $3, regardless of the number of miles traveled. This is added to the total cost of the taxi fare, which is represented by y.

7 0
2 years ago
Help pls ;) 9 points :0
zavuch27 [327]
I believe it’s b- it might not be correct I believe
6 0
2 years ago
Complete the point-slope equation of the line through (-1,6) and (1,5).
deff fn [24]
Step by step equation
5 0
3 years ago
Read 2 more answers
Complete the equation of the line through<br> (-6, -5) and (-4,-4).<br> Use exact numbers.
Nutka1998 [239]

Answer:

y = \frac{1}{2} x - 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 6, - 5) and (x₂, y₂ ) = (- 4, - 4)

m = \frac{-4+5}{-4+6} = \frac{1}{2}, thus

y = \frac{1}{2} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 6, - 5), then

- 5 = - 3 + c ⇒ c = - 5 + 3 = - 2

y = \frac{1}{2} x - 2 ← equation of line

7 0
2 years ago
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