Answer:
210 ft^2
Step-by-step explanation:
The area of a triangle is
A = 1/2 bh where b is the base and h is the height
Since this is a right triangle the base is 20 ft and the heigth is 21 ft
A = 1/2 ( 20) * 21
210 ft^2
How do you do a box and whisker plot using 18,18,17,19,20,22,22,22,22,23,25 and26
sashaice [31]
What a whisker plot exactly
Answer:
a = - 4
Step-by-step explanation:
Given x = - 2 is a root then f(- 2) = 0
f(x) = x³ + x² + ax - 4, thus
f(- 2) = (- 2)³ + (- 2)² - 2a - 4 = 0, that is
f(- 2) = - 8 + 4 - 2a - 4 = 0, thus
- 8 - 2a = 0 ( add 8 to both sides )
- 2a = 8 ( divide both sides by - 2 )
a = - 4
Answer:
1
Step-by-step explanation:
h
