Answer:
2x^2 - 8x
Step-by-step explanation:
2x(x-4). Distribute.
(2x*x)+(2x*-4)
2x^2+(-8x)
2x^2 - 8x
X - y = -3
x - x - y = -3 - x
-y = 3 - x
y = -3 - x
Answer:
B. A random sample of 2,800 U.S. adults under 35.
Step-by-step explanation:
To have an unbiased and accurate sample, the sample should be representative of the population about which we are inferring.
Also, the bigger the sample size, the less margin of error we will have in the inference.
As the population in this survey is about the US adults under 35, the sample should be selected from this group.
From the options that select from this population, the largest sample is 2,800.
So the answer is Option B.
Bob needs to save at least 10 dollars to buy that book
he gets 2 dollars in allowance every day
he has 3 dollars now
in how many days will he be able to buy the book?
translation
if d=number of days
then
how much has now+how much will earn≥10
3+2d≥10
solve
minus 3 both sides
2d≥7
divide both sides by 2
d≥3.5
but wait, you can't have 3.5 days, round up becuase if round down you wil have less than $10
answer is 4 days
that is an example, just read it and don't just report it
Answer:
The mean absolute deviation
Step-by-step explanation:
34.5 is the mean
21.5+12.5+13.5+11.5+8.5+30.5= 78
Answer is B
