Answer:
The product of (x-3) and (x+7) is x² + 4x - 21
Step-by-step explanation:
The product of (x-3) and (x+7) is x² + 4x - 21
The product of (x - 3) and (x + 7) can be found as follows:
(x - 3)(x + 7)
open the bracket by multiplying
Therefore,
x(x) +x(7) - 3(x) - 3(7)
x² + 7x - 3x - 21
combine like terms
x² + 4x - 21
Answer:
14.29%
Step-by-step explanation:
Let's do the count for Test #1:
2 + 5 + 6 + 1 = 14 total students
Out of which, below 70 is 2 people [only the leftmost bar]
Let's do the count for Test #2:
2 + 3 + 5 + 4 = 14 total students
Out of which, below 70 is again 2 people [only the leftmost bar]
So, to find percentage of people below 70, we divide the below 70 number of people with total number of people.
(2+2)/(14+14) = 4/28 = 14.29%
At start: PE only
At end: KE and energy lost to friction
PE = KE + E
E = PE - KE
= mgh - (1/2)mv^2
= (40)(9.8)(12) - (.5)(40)(10)^2
= 2704J
First one is reflection across x-axis.
Not visualizing 2nd one
Answer:for the first one I’m unsure but think it’s b and for the second one its 38 inches
Step-by-step explanation:
The radius is just half the circumference
