The diagonals intersect perpendicularly, two consecutive angled are supplementary, and that opposite angles are equal
17) replace the given number for "x" and evaluate
a) x² + 2x + 1 ; when x = 3
3² + 2(3) + 1
= 9 + 6 + 1
= 16
b) x² + 2x + 1 ; when x = -4
(-4)² + 2(-4) + 1
= 16 - 8 + 1
= 9
c) x² + 2x + 1 ; when x = 3
(-22.872)² + 2(-22.872) + 1
= 523.128384 - 45.744 + 1
= 478.384384
18) The dependent variable is affected by the other variable and is the "output" The independent variable is the input.
a) y = 3x - 5; "x" is the independent variable
b) the time of day is the independent variable (you would input the time of day to calculate the temperature).
19) Let the x-axis represent the length of the lumber cut off and the y-axis represent the length of the lumber remaining.
Answer:
x > -6
Step-by-step explanation:
-5(-4) - 10 < 20
20 - 10 < 20
10 < 20
Answer:
80x2=160 20x3=60 160+60=220
Step-by-step explanation:
You would divide 198 by 9.
198÷9=22
Each person would clean 22 rooms.
