Because x+7=0 is -7
So substitute the number (-7) to (x^2+4x-24)
Answer:
16
Step-by-step explanation:
distance between point x and z is 8 units
distance between point z and y is 4 units
8 * 4 = 32
formula for area of a triangle (l * w)/2
plugin: (8 * 4)/2 = 16
Area of rectangle = 35 feet square
Let the Width of rectangle is x feet.
Length of rectangle is 3 feet more than twice the width.
Thus,Length can be written as: 2x + 3
Area of rectangle is product of its length and width.
So,
Area = Length x Width
Thus
x = -5
or
x =7/2 = 3.5
Since the measure of width cannot be negative, we neglect x = -5. and keep the value x = 3.5
Therefore,
Width = 3.5 feetLength = 2x + 3 = 2(3.5) + 3 = 10 feet
Answer: She runs about 4.2 miles.
Step-by-step explanation:
6/50 = x/35
6*35 = 50*x
210 = 50x
50x = 210
x = 210/50
x = 4.2