Answer:
Very blurry picture I cant make out hat the question is, you should try typing the equation and sending a screenshot of the graph that would be a lot better!
Step-by-step explanation:
Answer:
4.75b+3.50=15.00
Step-by-step explanation:
4.75b+3.50=15.00
4.75b=11.50
b=2.42
She can buy 2 bags of fruit
Answer:
7.2
Step-by-step explanation:
24/2 = 12
19.2/2 = 9.6
- 
= 51.84
= 7.2
Answer:
20.92
Step-by-step explanation:
Given the data:
X : 170, 160, 130, 165, 125
Standard deviation (s) :
s = √Σ((X - m)² / n)
m = mean
n = sample size
Mean , m = Σx/n
m = (170 + 160 + 130 + 165 + 125) / 5
m = 750/5
m = 150
((X - m)² / n - 1)
[(170-150)^2 + (160-150)^2 + (130-150)^2 + (165-150)^2 + (125-150)^2] / (5-1)
= 1750 / 4
= 437.5
s = √437.5
s = 20.9165
s = 20.92
1.2 A$ = 1 US$
22 A$ = x US$ Cross multiply
1.2*x = 22 * 1 Divide by 1.2
x = 22/1.2
x = 18.3 US $
