Answer:
Step-by-step explanation:
If Brenna has 5 candy bars and she wants to give 1/4 to a person,
she will give 1/4 to 20 people
one way to see it is by counting the bars
or
5/(1/4)=5*4=20
when you divide a fraction you multiply with the reciprocal
Answer:
67°
Step-by-step explanation:
let the base angle=x
x+x+46=180
2x=180-46=134
x=134/2=67
Answer:
Step-by-step explanation:
<u><em>Girls for English:</em></u>
20 + English + 12 = 36
English + 32 = 36
English = 36-32
English = 4 (For girls)
<u><em>Total for Science:</em></u>
12+7 = 19
<u><em>Total for English:</em></u>
25 + English + 19 = 70
English + 44 = 70
English = 70-44
English = 26 pupils
28 Books
You take the $230 and subtract $90, giving you $140, then divided that number by $5, and you can only put $5 in $140 28 times.
Answer:
38.911≤p≤41.089
Step-by-step explanation:
The formula for calculating confidence interval for a population mean us as shown below;
CI = xbar ± Z×S/√N where;
xbar is the sample mean = 40
Z is the z score at 95% confidence interval = 1.96
S is the standard deviation = 5
N is the sample size = 81
Substituting this parameters in the formula we have;
CI = 40±1.96×5/√81
CI = 40±(1.96×5/9)
CI = 40±(1.96×0.556)
CI = 40±1.089
CI = (40-1.089, 40+1.089)
CI = (38.911, 41.089)
The 95% confidence interval for the population mean is 38.911≤p≤41.089