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2 years ago

A sphere has a radius 14 units. What is the surface area of the sphere

Mathematics

2 answers:

seropon [69]2 years ago

6 0

Answer:

2461.76unit^2

Step-by-step explanation:

SA=4xπx14^2

=12.56×14^2

=12.56×196unit^2

=2461.76unit^2

morpeh [17]2 years ago

4 0

Answer:

2463.009

radius squared x 4 x pi is the formula

14 x 14 = 196 x 4 = 784 x pi = 2463.00864

Step-by-step explanation:

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Find the square roots of 100

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Answer:

Step-by-step explanation:

$\sqrt{100} = \sqrt{2^{2} 5^{2}} = 10$

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Solving Inequalities<br><br>Algebra 1

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Answer:

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Without simplifying, identify the slope of the line given by the equation y-5=-2(x+5)

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Slope is a number in front of x, so slope is (-2)

y-y1=m(x-x1)
y-5= -2(x+5)
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2 years ago

Consider a large shipment of 400 refrigerators, of which 40 have defective compressors. If X is the number among 15 randomly sel

Vlad [161]

Answer:

The required probability is 0.94

Step-by-step explanation:

Consider the provided information.

There are 400 refrigerators, of which 40 have defective compressors.

Therefore N = 400 and X = 40

The probability of defective compressors is:

$\frac{40}{400}=0.10$

It is given that If X is the number among 15 randomly selected refrigerators that have defective compressors,

That means n=15

Apply the probability density function.

$P(X=x)=^nC_xp^x(1-p)^{n-x}$

We need to find P(X ≤ 3)

$P(X\leq3) =P(X=0)+P(X=1)+P(X=2)+P(X=3)\\P(X\leq3) =\frac{15!}{15!}(0.1)^0(1-0.1)^{15}+\frac{15!}{14!}(0.1)^1(1-0.1)^{14}+\frac{15!}{13!2!}(0.1)^2(1-0.1)^{13}+\frac{15!}{12!3!}(0.1)^3(1-0.1)^{12}\\$

$P(X\leq3) =0.944444369992\approx 0.94$

Hence, the required probability is 0.94

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2 years ago

Please help me with this

juin [17]

Answer:

x=30, <A=60, <C=30

Step-by-step explanation:

A triangle always has its total angles added up to 180 degrees, so we can set up the following equation:

90+2x+x=180

90+3x=180

3x=90

x=30

Since x=30, this means <C is 30 degrees. For <A, it's twice as much as <C, so 2*30=60.

So x=30, <A=60, <C=30

Hope this helped!

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