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3 years ago

The mean of data set A is 43.5 and the MAD is 3.7. The mean of data set B is 12.8 and the MAD is 4.1.

Mathematics

2 answers:

Artemon [7]3 years ago

3 0

Answer:

data set B!

Step-by-step explanation:

egoroff_w [7]3 years ago

3 0

Answer:

For questions one: its B

Step-by-step explanation:

since, Data set B shows a greater degree of variability because the distance between a data point(value) and the mean is 4.1. This also means that the data points in Set B are more spread out compared to the data points in Set A.

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Answer:

81 $\frac{3}{4}$

Step-by-step explanation:

Sorry this question does not sense..... 81 $\frac{3}{4}$ is evaluated

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3 years ago

89 POINTS!!! You are given an isosceles trapezoid ABCD with median XY. Complete the following.

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Step-by-step explanation:

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3 years ago

What was the mistake? *

seropon [69]

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Step-by-step explanation:

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3 years ago

Explain why sin^-1(sin(3pi/4))does not equal 3pi/4 when y=sin x and y=sin^-1 x are inverses.

Fofino [41]

Because they're not inverses, not exactly. $\sin x$ is not invertible on its entire domain because it's not one-to-one. There are infinitely many values of $x$ such that $\sin x=0$ , for example.

The standard function $\sin^{-1}x$ has a domain of $-1\le x\le1$ and outputs values between $-\dfrac\pi2$ and $\dfrac\pi2$ . This means that its inverse, $\sin x$ , is indeed its inverse as long as $-\dfrac\pi2\le x\le\dfrac\pi2$ .

$\dfrac{3\pi}4$ is larger than $\dfrac\pi2$ and thus does not fall in the "invertible part" of the domain of $\sin x$ . We have

$\sin\dfrac{3\pi}4=\dfrac1{\sqrt2}$

which is a value between -1 and 1, so that

$\sin^{-1}\left(\sin\dfrac{3\pi}4\right)=\sin^{-1}\left(\dfrac1{\sqrt2}\right)=\dfrac\pi4$

If we wanted to recover $\dfrac{3\pi}4$ , we'd have to redefine $\sin^{-1}x$ or define a new inverse function that works on a different branch of the domain of $\sin x$ .

7 0

3 years ago

Explain all steps in detall. Incluide your final answer.. 9²+3•(9-5)²/4=

klasskru [66]

Answer: 93

Step-by-step explanation:

To solve this problem, we need to use the order of operations, or PEMDAS.

Parenthesis

Exponent

Multiply

Divide

Add

Subtract

For multiply/divide and add/subtract, you don't necessarily go in that specific order. You go from left to right, depending on what comes first. For example, if division comes before multiply, you would divide first, then multiply. Same goes for add/subtract.

9²+3×(9-5)²/4 [solve parenthesis]

9²+3×(4)²/4 [solve exponent]

81+3×16/4 [solve multiply or divide, whichever comes first]

81+12 [solve add or subtract, whichever comes first]

Now, we know that 93 is our final answer.

7 0

3 years ago