Answer:
Girls in Mr. Chang's class: 28 - 21 ; # girl students = # total students - # boy students ; 7 girl students.
Boys in Mr. Chang's class: 28 - 7 ; # boy students = # total students - girl students ; 21 boy students.
Answer:
12.1%
Step-by-step explanation:
Given that:
Mean (μ) = 20.2 grams and standard deviation (σ) = 0.18 grams.
The z score is a score used to determine the number of standard deviations by which the raw score is above or below the mean. A positive z score means that the raw score is above the mean and a negative z score means that the raw score is below the mean. It is given by:

a) For x < 19.99 g:

From the normal distribution table, P(x < 19.99) = P(z < -1.17) = 0.1210 = 12.1%
The probability that a randomly chosen mouse has a mass of less than 19.99 grams is 12.1%
Answer:
0
Step-by-step explanation:
evaluate 10 + (8÷4) - 12
Answer:
x=0;x=
Step-by-step explanation:
assuming you meant 26x^2-9x=0:

A. 2067.
6890 time .30 (30 percent) is 2067
B. 4823
inital ammount minus down payment
6890 - 2067 = 4823
C 134.08
Total ammount multiplied by percentage (0.0278)
4823 * .0278 = 134.079 per month
D.1612.81
find total paid and subtract initial ammount to find finance charge
(134.08*48)= 6435.81
6435.81-4824 = 1612.81