Answer:
A. The variation between the sample means is small.
Step-by-step explanation:
I took the quiz and got it right. O gotchu fam
Answer:
(b + 3) + 6 = <u>b + 9</u>
Explanation:
The order in which you add numbers together doesn't matter.
Answer:
-3x^2-15x-30
Step-by-step explanation:
Let's simplify step-by-step.
−3(x+3)2−3+3x
Distribute:
=−3x2+−18x+−27+−3+3x
Combine Like Terms:
=−3x2+−18x+−27+−3+3x
=(−3x2)+(−18x+3x)+(−27+−3)
=−3x2+−15x+−30
Answer:
changes over time
Step-by-step explanation: its going up not staying at one spot
Answer:
14.4 ft
Step-by-step explanation:
The triangles formed by both ladders are similar to each other. Therefore, each corresponding sides will be proportional.
Thus, x + 8 would represent how far up the 10-foot ladder reaches the wall.
Therefore:
18/10 = (x + 8)/8
9/5 = (x + 8)/8
Cross multiply
9*8 = 5(x + 8)
72 = 5x + 40
72 - 40 = 5x
32 = 5x
Divide both sides by 5
32/5 = x
x = 6.4
The 10-foot ladder would be, 6.4 + 8 = 14.4 ft far up the wall.
