Answer:
Solved math homework week 32 3rd of secondary school.
Felicidades
Step-by-step explanation:
μ = mean = 10.72 oz
σ =standard deviation = 0.14
x = 10.5
First, find the z-score:
z = x - μ / σ
z = (10.5 - 10.72) / 0.14 = -1.57143
Then find the value on the z-score table:
P (x < 10.5) = 0.058042
Answer:The answer is B
Step-by-step explanation:I divided 300 by 5 then added the answer to itself
300/5=60
60+60=120
Answer:
Mr. Sanchez's class sold 28 fruit pies and Mr. Kelly's class sold 32 bottles of fruit juice.
Step-by-step explanation:
Let x be the number of fruit pies sold and y be the number of bottles of fruit juice sold.
Together, the classes sold 60 items, so
x + y = 60
Mr. Sanchez’s class sold fruit pies for $1.55 each, so x fruit pies cost $1.55x.
Mr. Kelly’s class sold bottles of fruit juice for $1.40 each, so y bottles of fruit juice cost $1.40y.
Together, the classes earned $88.20 for their school, so
1.55x + 1.40y = 88.20.
You get the system of two equations:

From the first equation:

Substitute it into the second equation:

Mr. Sanchez's class sold 28 fruit pies and Mr. Kelly's class sold 32 bottles of fruit juice.