Answer:
For the first option 1h for the second option is 7h and she will earn the same which is 112$
Step-by-step explanation:
12 x 1 = 12 + 100 = 112
16 x 17 =112
Answer:
Step-by-step explanation:$30 per month, $0.20 per text
A: 50 text messages in order for both plans to cost the same
Answer:
The probability is 0.683
Step-by-step explanation:
To calculate this, we shall be needing to calculate the z-scores of both temperatures
mathematically;
z-score = (x-mean)/SD
From the question mean = 78 and SD = 5
For 73
z-score = (73-78)/5 = -5/5 = -1
For 83
z-score = (83-78)/5 = 5/5 = 1
So the probability we want to calculate is within the following range of z-scores;
P(-1 <z <1 )
Mathematically, this is same as ;
P(z<1) - P(z<-1)
Using the normal distribution table;
P(-1<z<1) = 0.68269 which is approximately 0.683
Answer: $56.50
==================================
(instead of dividing each of them individually and them subtracting them one by one, combine them together as a fraction first and then subtract)
80 - (68/5 + 51/2 + 22/5)
= 80 - (136/10 + 255/10 + 44/10)
= 80 - (435/10)
= 80 - 43.5
= 56.5
He saved $56.50 on that
Selling Price = $145
Charge on first $25 is 5.25%
5.25% of $25 =
Charge on rest is 3.25%
rest amount = $145 - $25 = $120
3.25% of $120 =
