Answer:
x = -5/7, 2
Step-by-step explanation:
Step 1: Factor
(5x + 7)(x - 2) = 0
Step 2: Find <em>x </em>roots
5x + 7 = 0
x = -5/7
x - 2 = 0
x = 2
#3.
in this case, all you need to do is to look at the intersecting point. each units represent 2, the coordinates of the intersection are (4,-1), so D is the choice.
#4. B is the choice. two lines either intersect once (one solution), never (parallel, no solution), or overwrap (merge, infinite solutions)
Answer: 35
Step-by-step explanation:
Given : Standard deviation : 
Margin of error : 
Significance level : 
Critical value : 
The formula we use to find the minimum sample size required :-
i.e. 
Hence, the minimum sample size is needed to be 95% confident that the sample mean is within 1 pound of the true population mean =35
2 sundaes at 4.85 each.....estimation = 2(5) = $ 10
5 banana splits at 5.99 each...estimation = 5(6) = $30
3 fizzies at 2.95 each...estimation = 3(3) = $ 9
4 mocktails at 3.50 each...estimation = 4(4) = $ 16
totaling $ 65........for 7 people = 65/7 = 9.28 rounds to 9
so the 9 in Millie's calculation represents how much each person will have to pay
