Which number line can be used to find the distance between (4, –1) and (8, –1)? A number line going from negative 2 to positive 8 in increments of 1. Points are at 4 and 8. A number line going from negative 2 to positive 8 in increments of 1. Points are at negative 1 and positive 4. A number line going from negative 2 to positive 8 in increments of 1. Points are at negative 1 and positive 8. A number line going from negative 8 to positive 2 in increments of 1. Points are at negative 8 and negative 4.

A number line going from negative 2 to positive 8 in increments of 1. Points are at 4 and 8.

Step-by-step explanation:

A number line is a straight line with numbers placed at regular intervals. Since the distance between two points  (4, –1) and (8, –1) is needed to be found, they have the same y coordinate therefore they lie on the same line. To determine the distance between the two points a number line going from - 2 to + 8 in increments of 1. Since the x coordinates of the two points are 4 and 8, on the number line points 4 and 8 are marked.

From the number line, the distance between the two points = 8 - 4 = 4 units

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

i believe the answer is 323 ft

step-by-step explanation: