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astra-53 [7]
3 years ago
9

Helllllllllppppppppppppppppppp

Mathematics
1 answer:
Elena-2011 [213]3 years ago
5 0

Answer:

A. 12cm

Step-by-step explanation:

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An investment website can tell what devices are used to access the site. The site managers wonder whether they should enhance th
hram777 [196]

Answer:

The shape of the sampling distribution for the sample proportion is going to be normal with mean \mu = 0.42 and \sigma = \sqrt{\frac{0.42*0.58}{300}} = 0.0285.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}

So the shape of the sampling distribution for the sample proportion is going to be normal with mean \mu = 0.42 and \sigma = \sqrt{\frac{0.42*0.58}{300}} = 0.0285.

3 0
3 years ago
Find the measure of one interior angle of a regular pentagon?<br>A.30<br>B.72<br>C.360<br>D.108
artcher [175]

Answer:

72°

Step-by-step explanation:

Divide 360° (full circle) by 5 (a pentagon has 5 interior angles), obtaining 72°

6 0
3 years ago
A scuba diver descends farther down into the ocean from an initial depth of 12.8 feet below sea level. The scuba diver descends
Kay [80]

Answer:

r \geqslant 10.4

4 0
2 years ago
The radius of a circle is 6 meters. What is the area of a sector bounded by a 150 arc
just olya [345]

Answer:

47.14 m²

Step-by-step explanation:

Recall that the central angle of a full circle is 2π radians or 360°.  The area of the sector bounded by a 150° arc is the fraction

150°

------- times the area of the full circle (πr²):

360°

(15/36)π(6m)² = 0.417(3.14)(36 m² = 47.14 m²

3 0
3 years ago
Complete the steps in order to write the inverse of f(x) = x + 5
yaroslaw [1]
An inverse function produces points (y,x) for every point (x,y) produced by the parent function.  So to find the inverse function, you solve for the independent variable and when done switch the variable labels....

y=x+5  subtract 5 from both sides

y-5=x  now switch labels

y=x-5

So if f(x)=x+5

f^-1(x)=x-5
7 0
3 years ago
Read 2 more answers
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