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LenKa [72]
4 years ago
14

Which expression gives the surface area of a sphere with radius r​

Mathematics
2 answers:
PtichkaEL [24]4 years ago
8 0

The correct answer is 4πr^2

ohaa [14]4 years ago
6 0

Answer:

Simple, 4*pi*r^2

Step-by-step explanation:

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Write the given expression as a single trigonometric function.
tatiyna

Answer:

Just did it, had a good guess.

Step-by-step explanation:

6 0
3 years ago
A recent poll of 120 randomly selected adults who frequent the local​ farmer's market found that 54 have purchased reusable clot
Olenka [21]

Answer:

95% Confidence interval:  (0.361,0.539)    

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 120

Number of farmers who reusable cloth bags, x = 54

\hat{p} = \dfrac{x}{n} = \dfrac{54}{120} = 0.45

95% Confidence interval:

\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

Putting the values, we get:

0.45\pm 1.96(\sqrt{\dfrac{0.45(1-0.45)}{120}}) = 0.45\pm 0.089\\\\=(0.361,0.539)

is the required 95% confidence interval for the proportion of adults who have purchased reusable cloth​ bags.

3 0
4 years ago
Help Number three please!!!
Lubov Fominskaja [6]

Step-by-step explanation:

108-ambulance

100- police

1098-child laber

5 0
3 years ago
NEED HELP ASAP SOMEONE PLEASE!!!!
Alisiya [41]

Answer: The state with the second lowest population has the lowest population density.

Step-by-step explanation:

Since, Density = Population / Area

The population of state A = 1,055,173

Its area = 2677 square km

Thus, the density of state A = \frac{1055173}{2677} = 394.162495,

The population of state B = 1,333,089

Its area = 36,418 square km

Thus, the density of state B = \frac{1,333,089}{36,418} = 36.6052227,

The population of state C = 3,596,677

Its area = 5543 square km

Thus, the density of state C = \frac{3,596,677}{5543} = 648.868302,

The population of state D =6,745,408

Its area = 10555 square km

Thus, the density of state D = \frac{6,745,408}{10555} = 639.072288,

Since, by the above explanation,

The state in increasing order of the populations,

State A < State B < State C < State D,

Also, the state in increasing order of density,

State B < State A < State D < State C

⇒ Second option is correct.

3 0
3 years ago
You bought jeans last week for $55. Today you see that the jeans are on
PtichkaEL [24]
Yes I think it’s that
7 0
3 years ago
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