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Natasha_Volkova [10]
3 years ago
15

A cone and a sphere have the same volume the base of the cone has a radius of 8 feet and the sphere has a radius of 6 feet what

is the height of the cone?
Mathematics
1 answer:
jekas [21]3 years ago
3 0

Step-by-step explanation:

Volume of Cone=

\frac{1}{3} \pi \: r {}^{2} h

Volume of Sphere=

\frac{4}{3} \pi \: r {}^{3}

Since VC = VS

\frac{1}{3} \times 3.14 \times 8 {}^{2}  \times h =  \frac{4}{3}  \times 3.14 \times 216

66.99h = 904.32

h = 904.32 ÷66.99

h= 13.5 feet

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john and ted have a reputation of being late to events. If john is late 20% of the time and ted is late 40% of the time what is
oee [108]

Answer:

The probability that they will both be on time is 12/25.

Step-by-step explanation:

John is late 20% of the time.

So, he is prompt 80% of the time.

Ted is late 40% of the time.

So, he is prompt 60% of the time.

Since, both the events are independent,

p(John be on time ∩ Ted be on time) = p(John be on time) × p(Ted be on time)

= \frac{80}{100} × \frac{60}{100}

= 0.80 × 0.60

= 0.48 or 48%

=\frac{12}{25}

Hence, the probability that they will both be on time is 12/25.

3 0
3 years ago
a candy factory has to order boxes for its candy canes if they plan to make 300,000 candy canes and each box can hold 12 candy c
natta225 [31]
25,000 boxes should be ordered

Hope this helps and have a good day :D
6 0
3 years ago
Read 2 more answers
Which correctly uses bar notation to represent the repeating decimal
ioda

Answer:

2nd one..

Step-by-step explanation:

but although all are wrongmm barnotation is not used

6 0
4 years ago
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol
Julli [10]

Answer:

0.071,1.928

Step-by-step explanation:

                                                Downtown Store   North Mall Store

Sample size   n                             25                        20

Sample mean \bar{x}                         $9                        $8

Sample standard deviation  s       $2                        $1

n_1=25\\n_2=20

\bar{x_1}=9\\ \bar{x_2}=8

s_1=2\\s_2=1

x_1-x_2=9-8=1

Standard error of difference of means = \sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}

Standard error of difference of means = \sqrt{\frac{2^2}{25}+\frac{1^2}{20}}

Standard error of difference of means = 0.458

Degree of freedom = \frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}

Degree of freedom = \frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}

Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

Confidence interval = (x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)

Confidence interval = 1-(2.0280)\times 0.458,1+(2.0280)\times 0.458

Confidence interval = 0.071,1.928

Hence Option A is true

Confidence interval is  0.071,1.928

4 0
3 years ago
The franklins have a home loan with an interest rate of 4 1/4%. write the percent as a fraction in simplest form.
alex41 [277]
4 1/4 % =
4.25% = 
0.0425 =
425/10,000 = 
17/400 <==
8 0
3 years ago
Read 2 more answers
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