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1 year ago

Can someone help me with elementary statistics

Mathematics

1 answer:

Nadya [2.5K]1 year ago

6 0

Answer:

Yes

Step-by-step explanation:

What do you need help with

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Evaluate csc(-315°).

Maru [420]

Answer:

$\frac{2}{\sqrt{2} } = \sqrt{2}$

Step-by-step explanation:

Notice from the attached image that -315 degrees is the same as 45 degrees.

Recall as well that the csc function is defined as the reciprocal of the sine function: $csc(x)=\frac{1}{sin(x)}$

Then, you need to evaluate $\frac{1}{sin(45)} = 1/\frac{\sqrt{2} }{2} = \frac{2}{\sqrt{2} } =\sqrt{2}$

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2 years ago

A human hair is approximately 40 microns (um) wide. If 1 um is equal to 10

Natasha2012 [34]

Answer:

D 40,000nm

Step-by-step explanation: 1nm/10^-9m * 10^-6/1um = 10^3 nm/um

Therefore in 40 microns there are:

40um * 10^3 nm/um = 40 * 10^3 nm = 40,000 nm

5 0

1 year ago

14/15 divided by 7/5

Charra [1.4K]

9514 1404 393

Answer:

2/3

Step-by-step explanation:

There are a couple of different ways that division of fractions can be done.

1) "invert and multiply"

$\dfrac{14}{15}\div\dfrac{7}{5}=\dfrac{14}{15}\times\dfrac{5}{7}\\\\=\dfrac{14}{7}\times\dfrac{5}{15}=\boxed{\dfrac{2}{3}}$

2) use the numerators when the denominators are the same

$\dfrac{14}{15}\div\dfrac{7}{5}=\dfrac{14}{15}\div\dfrac{21}{15}\\\\=\dfrac{14}{21}=\boxed{\dfrac{2}{3}}$

6 0

2 years ago

The functions f(x) and g(x) are shown on the graph. f(x) = | X What is g(x)? g(x) = ? f(x) = x 1.6 -5

Virty [35]

4948484848484949493939393393

5 0

2 years ago

What is the answer of: (10+2b)^2

scZoUnD [109]

Answer:

10^2+2×2b×10+2b^2 = 100+40b+2b^2

5 0

1 year ago