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exis [7]
1 year ago
10

(01.06 MC)

Mathematics
1 answer:
tia_tia [17]1 year ago
3 0
Part A: r = d/t

Part B: 221760 feet per hour

Part C: 42 mph

Part D: Miles because we are measuring large distances
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The volume of a cylinder is 400x cm. The radius of the base of the cylinder is 4 cm. What is the height of the cylinder
irina1246 [14]

Answer: 8cm

Step-by-step explanation:

V=\pi r^2h

Solve for h;

h=\frac{V}{\pi r^2}

h=\frac{400cm^3}{(3.14)(4cm)^2}

h=7.96\\h=8

3 0
2 years ago
3475 milliliters to liters
kirill115 [55]
3.475
hope this helps!!
3 0
3 years ago
Read 2 more answers
What is the cost of operating a 3.00-w electric clock for a year if the cost of electricity is $0.0900 per kw · h ?
brilliants [131]
We must take into account the following change of units:
 1kw = 1000w

1 year = 365 days

1 day = 24 hours
 Applying the change of units we have that the electric consumption for 1 year is given by:
 (3) * (1/1000) * (365) * (24) = 26.28 kw * h

 Then, the total cost is given by:
 (26.28) * (0.0900) = 2.3652

 Answer:
 
the cost of operating a 3.00-w electric clock for a year is:
 
$ 2.3652
8 0
3 years ago
1 point
Margarita [4]

Answer:

35% or 0.35

Step-by-step explanation

If 20 grams is 100%, that means each gram is 5% of the whole. So 7 time 5 is 35.

4 0
3 years ago
Nielsen ratings are based on televisions in 50005000 households. Nielsen estimates that 12 comma 00012,000 people live in these
avanturin [10]

Answer:

We are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%

Step-by-step explanation:

-From the given information, \hat p=0.65.

-We calculate the confidence interval using this value at 95% confidence level:

CI=\hat p\pm z \sqrt{\frac{\hat p(1-\hat p)}{n}}\\\\\\=0.65\pm 1.96\times \sqrt{\frac{0.65\times 0.35}{12000}}\\\\\\=0.65\pm 0.0085\\\\\\=[0.6415,0.6585]

So, the 95% confidence interval is (0.6515,0.6585).

Hence, we are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%.

6 0
3 years ago
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