Unsaved Find the surface area of a conical grain storage tank that has a height of 46 meters and a diameter of 16 meters. Round the answer to the nearest square meter.

Answers

Answer 1

Answer: The formula for the surface area of a cone is $SA= \pi r(r+ √(h^2+r^2) )$ . Filling in accordingly, we have $SA= \pi (8)(8+ √(46^2+8^2) )$ and $SA=8 \pi (8+ √(2116+64))$ . That will simplify to $SA=8 \pi (8+ √(2180) )$ and $SA=8 \pi (8+46.69047)$ . If we LEAVE pi in the answer you would have $437.5 \pi$ which rounds to $438 \pi$ . If you multiply pi in, you would have 1375.5 or, rounded, 1376. Of course those labels are all meters squared.

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What do you call tha tool that can be used to collect data?__________

Find 1+2+3+4+ ... +40, the sum of the first 40 natural numbers.
The sum is

Answers

Answer : 840

1 + 41 = 42

2 + 40 = 42

___________

20 pairs

20 × 42 = 840

Answer:

$\bold{S_(40)=820}$

Step-by-step explanation:

$1+2+3+4+ ... +40=S_(40)\n\na_1=1\na_(40)=40\nn=40\n\nS_n=\frac{a_1+a_n}2\cdot n\n\nS_(40)=\frac{1+40}2\cdot40=41\cdot20=820$

Out of the 180 students at a summer camp, 72 signed up for canoeing. There were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing.Use a two-way table to organize the information and answer the following question:

Approximately what percentage of students signed up for neither canoeing nor trekking?

72%
40%
54%
98%

Answers

Answer: Third option is correct.

Step-by-step explanation:

Since we have given that

Total number of students = 180

Number of students who signed for canoeing (C) = 72

Number of students who signed for trekking (T) = 23

Number of student who signed for trekking is also signed for canoeing = 13

Number of students who only signed for canoeing (C) = 72-13=59

Number of students who only signed for trekking (T) = 23-13=10

So, Number of students who signed up either for canoeing or trekking is given by

$n(C\cup T)=n(C)+n(T)-n(C\cap T)\n\nn(C\cup T)=72+23-13\n\nn(C\cup T)=95-13\n\nn(C\cup T)=82$

So, Number of students who signed up neither for canoeing not trekking is given by

$n(C\cup T)'=n(U)-n(C\cup T)\n\nn(C\cup T)'=180-82\n\nn(C\cup T)'=98$

So, Percentage of students signed up for neither canoeing nor trekking is given by

$(98)/(180)* 100\n\n=54.4\%\n\n\approx 54\%$

Hence, Third option is correct.

that is 72%of the kids

The ratio 8.4 to 4.4

Answers

Ratios can be written in multiple ways such as

a:b
a to b
a/b

So we can write yours in those three ways:

8.4:4.4
8.4 to 4.4
8.4/4.4

3t + 15 = 45. solve pls

Answers

Answer:

t=10

Step-by-step explanation:

3t + 15 = 45

3t = 30

t = 10

Answer:

t = 10

Step-by-step explanation:

if you want detailed explanation then ask in comments

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There is a 0.23 probability that a typical convenience store customer buys gasoline. The probability that a customer buys groceries is 0.76 and the conditional probability of buying groceries given that the customer buys gasoline is 0.85.a) Find the probability that a typical customer buys both gasoline and groceries.

Answers

Answer:

The probability that a typical customer buys both gasoline and groceries, P(Ga n Gr) = 0.1955

Step-by-step explanation:

Let the probability that a customer guys groceries be represented by P(Gr) and that of buying gasoline be P(Ga)

Given

P(Gr) = 0.76

P(Ga) = 0.23

P(Gr|Ga) = 0.85

For mutually exclusive events,

P(B|A) = (P(B n A))/P(A)

P(Gr|Ga) = (P(Gr n Ga))/P(Ga)

P(Gr n Ga) = P(Gr|Ga) × P(Ga)

P(Gr n Ga) = 0.85 × 0.23 = 0.1955

Hope this Helps!!!!

If you had invested only 1 month´s worth of the emergency fund in the savings account at a 3.15% APR and the remainder in the 45-day CD at a 4.65% APR. What is the difference in the interest earned in 45 days when compared with question three? Question three was- Your fixed expenses are $1,500.45 a month. Your emergency fund has four month´s worth of coverage. You invest half in a savings account with an interest rate of 3.15% APR and the other half in a 45-day CD with an interest rate of 4.65% APR. How much is your total interest in 45 days? I got $28.85 for this.

Answers

I answered this question before.

Given:
Fixed monthly expenses: $1,500.45
Emergency fund is 4 month's worth: 1,500.45 x 4 = 6,001.80

Question 3:
Half of the emergency fund is invested in savings account with interest rate 3.15% APR
Half of the emergency fund is invested in 45-day CD with an interest rate of 4.65% APR.

6,001.80 * 1/2 = 3,000.90 * 3.15% * 45/360 = 11.82
6,001.80 * 1/2 = 3,000.90 * 4.65% * 45/360 = 17.44
29.26

1 month's worth of the emergency fund in the savings account and the remainder in the 45-day CD.

6,001.80 * 1/4 = 1,500.45 * 3.15% * 45/360 = 5.91
6,001.80 * 3/4 = 4,501.35 * 4.65% * 45/360 = 26.16
32.07

Answer:

2.79

Step-by-step explanation:

I just took it!

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