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4 years ago

I need help on this question plz

Mathematics

1 answer:

alekssr [168]4 years ago

3 0

The curved dome has the area of half a sphere with radius 8 in. That is

... A = 2πr² = 2π(8 in)² = 128π in²

The lateral area of the cylinder is

... A = 2πrh = 2π(8 in)(7 in) = 112π in²

The area of the flat base is

... A = πr² = π(8 in)² = 64π in²

Then the total area of the figure is

... (128π + 112π + 64π) in² ≈ 304·3.14 in²

... = 954.56 in² . . . . matches the 2nd selection

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Rachel earned $85.25 for working 6 1 4 hours. How much does Rachel earn per hour?

GaryK [48]

Answer:

Rachel earns per hour is $ 13.64 .

Step-by-step explanation:

As given

Rachel earned $85.25 for working $6 \frac{1}{4}$ hours.

i.e

Rachel earned $85.25 for working $\frac{25}{4}$ hours.

Now calculate earning of Rachel for 1 hour .

$Rachel\ earning\ for\ one\ hour = \frac{Total\ earning}{Total\ time}$

$Rachel\ earning\ for\ one\ hour = \frac{85.25}{\frac{25}{4}}$

$Rachel\ earning\ for\ one\ hour = \frac{85.25\times 4}{25}$

$Rachel\ earning\ for\ one\ hour = \frac{341}{25}$

$Rachel\ earning\ for\ one\ hour = \$ 13.64$

Therefore Rachel earns per hour is $ 13.64 .

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3 years ago

Read 2 more answers

A function is a rule that assigns each value of the independent variable to exactly one value of the dependent variable. True or

vesna_86 [32]

The answer is true
Let's imagine that we have the following function function:
 $y = x ^ 2 
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We have to:
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Dependent variable: y
For x = -1:
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$
 For x = 1:
 $y = (1) ^ 2 = 1 
$
 We observe that the independent variable can only obtain one result.
Answer:
True

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3 years ago

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3 years ago

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Colt1911 [192]

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