Answer:
1. 
2.
Step-by-step explanation:
All you are doing is bringing variables to the other side and making the action (multiplication, division, addition, subtraction) opposite.
Answer:
x^2 + 4x + 7
Step-by-step explanation:
(2x + 6) + (x^2 + 2x + 1) Remove parentheses.
2x + 6 + x^2 + 2x + 1 Combine like terms and reorder.
x^2 + 4x + 7
Hope this helped!
Answer:
The typesseting cost $ 35.48.
Step-by-step explanation:
Given that a 3,000 piece of direct mailing cost $ 1,435, and printing cost is $ 550, about 31/2 times the cost of typesetting, to determine how much did the typesetting cost the following calculation must be performed:
31/2 = 15.5
550 / 15.5 = X
35.48 = X
35.48 x 15.5 = 550
Thus, the typesseting cost $ 35.48.
Answer:
2500 is not a reasonable estimate.
Step-by-step explanation:
We are given the following in the question:
Number of pages read by Josie = 246
Pages read by older brother = 3 to 4 times as many pages as Josie
If x represents the number of pages read by her brother, we can write:

Putting values, we get,

Since, 2500 does not lie in this interval

Thus, 2500 is not a reasonable estimate for the number of pages that Josie's brother read.
Answer:
50%
Step-by-step explanation:
So, we divide by another 2! to cancel out double counting of two T's. Finally, if we divide all 6 different ways of getting exactly 2 heads (and 2 tails) in 4 flips by all possible outcomes 2 * 2 * 2 * 2 = 16 we would get the probability of exactly 2 heads in 4 flips.