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Alexeev081 [22]
3 years ago
13

What is the surface area of the sphere below? 11.3 A. 324 units2 324 units2 C. 36 units2 D. Cannot be determined​

Mathematics
2 answers:
erica [24]3 years ago
5 0
The correct answer is A
solong [7]3 years ago
4 0

Answer:

A=4πr2

Step-by-step explanation:

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A taxi charges an airport pickup fee of $3 plus $1.50 for each mile traveled. If a taxi ride cost John $36, how many miles did J
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Step-by-step explanation:

36-3=33

33 divided by 1.5 equals 22

answer is 22 miles

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Help :( I’m not sure what the answer is
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if it says greatest change then its 6:30 to 7:00

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Your answer is $16.40

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Determine the vertex of the function f(x) = 3x2 – 6x + 13. 1. Identify the values of a and b. a = and b = 2. Find the x-coordina
Sveta_85 [38]
F(x)=3x²-6x+13
a=3, b=-6, c=13
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3 years ago
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To save money, a local charity organization wants to target its mailing requests for donations to individuals who are most suppo
mars1129 [50]

Answer:

The 80% confidence interval for difference between two means is (0.85, 1.55).

Step-by-step explanation:

The (1 - <em>α</em>) % confidence interval for difference between two means is:

CI=(\bar x_{1}-\bar x_{2})\pm t_{\alpha/2,(n_{1}+n_{2}-2)}\times SE_{\bar x_{1}-\bar x_{2}}

Given:

\bar x_{1}=M_{1}=6.1\\\bar x_{2}=M_{2}=4.9\\SE_{\bar x_{1}-\bar x_{2}}=0.25

Confidence level = 80%

t_{\alpha/2, (n_{1}+n_{2}-2)}=t_{0.20/2, (5+5-2)}=t_{0.10,8}=1.397

*Use a <em>t</em>-table for the critical value.

Compute the 80% confidence interval for difference between two means as follows:

CI=(6.1-4.9)\pm 1.397\times 0.25\\=1.2\pm 0.34925\\=(0.85075, 1.54925)\\\approx(0.85, 1.55)

Thus, the 80% confidence interval for difference between two means is (0.85, 1.55).

3 0
3 years ago
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