Hello, Please help me :D thank you!
2 answers:
Answer:
Step-by-step explanation:
chocolate donuta= 35% of 40
=
=
=14
chocolate donuts=14
a.donuts that are not chocolates=40-14
=26
b.donuts with sprikles=24
percent of donjts with sprikles=24/40 *100%
=(2400/40)%
=60%
c.donuts that have cream filling out of donut that have sprikles=8
percent of donuts which have sprikles with cream filling=8/24*100%
=(800/24)%
=33.33%
7.final cost=35% of $124.50
=35/100 *$124.50
=$4357.5/100
=$43.575
8.48% 0f 500
=48/100 *500
=48*5
=240
9.let the number be x
15=60% 0f number
15=60/100 *x
15/x=60/100
do cross multiplication
x*60=15*100
x=1500/60
x=25
therefore the number is 25.
10.let the percent be y%
90=y% of 60
90=y/100 *60
90*100=60y
9000/60=y
y=150 %
therefore 150% 0f 60 is 90
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Let x be a random variable representing the heights of adult American men. Since it is normally distributed and the population mean and standard deviation are known, we would apply the formula,
z = (x - mean)/Standard deviation
From the information given,
mean = 68
standard deviation = 2.5
The probability that the height of a selected adult is between 63 and 73 is expressed as
For x = 63,
z = (63 - 68)/2.5 = -2
Looking at the normal distribution table, the probability corresponding to the z score is 0.02275
For x = 73,
z = (73 - 68)/2.5 = 2
Looking at the normal distribution table, the probability corresponding to the z score is 0.97725
Therefore,
Thus, the percentage of men are between 63 and 73 is
0.9545 * 100 = 95.45%
Rounding up to the nearest percentage, the answer is 95%