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3 years ago

Guys please help me with this question, I’d appreciate it a lot

Mathematics

1 answer:

Furkat [3]3 years ago

5 0

Answer:

n = 84.1

Step-by-step explanation:

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After learning the theoretical probability of a two sided coin landing on any one side, students work in groups to flip the coin

Bumek [7]

The answer c, because they got 9 out of 15 flips being heads. This probability is 0.6. The other answers are not accurate.

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3 years ago

X=<br> Length=<br> Width=<br> WILL GIVE BRAINLIEST + 5 star

babymother [125]

Answer:

x = 20

Length = 20ft

Width = 12ft

Step-by-step explanation:

A = 240

x^2 - 8x = 240

x^2 - 8x - 240 = 0

x^2 - 20x + 12x - 240 = 0

x(x-20) + 12(x-20) = 0

(x+12)(x-20) = 0

x = 20

x = -12 (which we discard since x is a length)

So the dimensions are 20ft and 20-8 = 12ft

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3 years ago

What is the area of the following circle

Bezzdna [24]

Answer:

16*pi=50.24

Step-by-step explanation:

4 0

3 years ago

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Differentiate <br> 1/√x^2-1

xz_007 [3.2K]

The function is $f(x)= \frac{1}{ \sqrt{ x^{2} -1}}$

write f again as $f(x)= (x^{2} -1)^{- \frac{1}{2} }$

(the power -1 takes the expression to the denominator, and the power 1/2 is square root)

writing rational expressions as power expressions, generally makes differentiation more practical.

In $f(x)= (x^{2} -1)^{- \frac{1}{2} }$ we notice 2 functions:

the outer function $u^{ -\frac{1}{2} }$ , where $u=x^{2} -1$ , and the inner, u itself , which is a function of x.

So we differentiate by using the chain rule:

$f'(x)= -\frac{1}{2}u^{- \frac{1}{2}-1 }*u'= -\frac{1}{2}u^{- \frac{3}{2} }*(2x)=- \frac{x}{ \sqrt{ u^{3} } } =- \frac{x}{ \sqrt{ (x^{2} -1)^{3} } }$

Answer: $- \frac{x}{ \sqrt{ (x^{2} -1)^{3} } }$

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3 years ago

A city has an elevation of -17 meters closer to sea level than a city that has an elevation of -40 meters. Agree or Disagree? Wh

abruzzese [7]

I agree because if your answer is in a negative that means, the number that is closer to zero is the greater number, ex: -23>-56.

6 0

3 years ago

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