Answer:
-2
Step-by-step explanation:
when x=0 y=-2... it is a decline
6x + 52 > 130
Subtract 52 from both sides:
6x > 78
Divide both sides by 6:
X > 78/6
X > 13
Answer:
b
Step-bystep explanation:
when subtracting you could reverse it and add so add back the 2.50 to the 5 and if he spent half of what he had left the that would mean he had another 5 dollars. in total he had 12.50$
Answer:
99.7%
Step-by-step explanation:
we start by getting the z-scores for the values given
We can get the z-scores using the formula below;
z-scores = (x-mean)/SD
for 338.5;
z = (338.5-598.4)/86.7 = -2.99 approximately-3
for 858.5;
z = (858.5-598.4)/86.7 = 3
so we want to get the percentages that lie within 3 standard deviations from the mean
According to the empirical rule, the percentages within 3 SD of the mean is;
100-0.15-0.15 = 99.7%
