O A. X = 9 and x = -9

Mathematics

1 answer:

Step2247 [10]3 years ago

6 0

Answer:

Step-by-step explanation:

c minus

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Write the expression (4x-2) x 6(2x+7) in the standard from of a quadratic expression, ax^2+bx+c. What are the coefficients of ea

umka21 [38]

A=48
b=144
c=-84

First, you simplify the second equation by multiplying 6 to 2x and 6 to 7. Then, you get the two equations, (4x-2) times (12x+42). You then use the FOIL method, multiplying 4x to 12x, 4x to 42, -2 to 12x, then -2 to 42. Simplify. Then number before x squared is your a value, value before x is b, and the value without x is c.

5 0

4 years ago

8 cm

Sergio039 [100]

Answer:

320 cm³

Step-by-step explanation:

none of the above

8 × 10 × 4

80 × 4

320 cm³

6 0

3 years ago

A line passes through the point (2, 10) and has a y-intercept of 4. What is the equation of the line?

KatRina [158]

Answer:

$y=3x+4$

Step-by-step explanation:

Hi there!

What we need to know:

Linear equations are typically organized in slope-intercept form: $y=mx+b$ where m is the slope and b is the y-intercept (the value of y when x is equal to 0)

1) Determine the slope (m)

$m=\frac{y_2-y_1}{x_2-x_1}$ where two points that the line passes through are $(x_1,y_1)$ and $(x_2,y_2)$

We're given the point (2,10) and the y-intercept of 4. Recall that the y-intercept occurs when x is equal to 0. This means that the y-intercept occurs at (0,4), giving us our second point.

Plug these points into the equation

$=\frac{10-4}{2-0}\\=\frac{6}{2}\\=3$