Answer:
Base = x = 18ft
Height = x - 4 = 14ft
Step-by-step explanation:
The formula for the area of A the triangle is given by the following equation:
1) A = (base * heigth)/(2)
From this problem, we know that
base = x and that the height is 4ft less than the base, so height = base - 4 = x - 4.
We also know that the area is 126ft², so A = 126 ft². Now we can replace these informations in equation 1).
126 = (x(x-4))/2
x² - 4x = 252
x² -4x - 252 = 0
The roots of this equation are x = 18 or x = -14. But we know that a triangle cannot have negative dimensions, so we use x = 18.
The base is x, so base = 18ft.
Height is 4ft less than the base, so height equals 18-4 = 14ft
Point C.
f(-3) is basically substituting x = -3 and get the y-value.
So when we substitute x = -3. Focus on x-axis at x = -3 then look up for the y-value. If the y-value is on x = -3 then that's f(-3)
An integer is a natural number (1, 2, 3 ...), zero, or the negative of a natural number.
-76.15 is none of those,
Answer: NO
Answer:
The answer is 70.8
Step-by-step explanation:
You do 7x3 times 2 and then 3x2.6 and then 7x3 again. You add them all up and get 70.8
21 + 21 + 3.9 + 3.9 + 21 = 70.8
