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den301095 [7]
3 years ago
13

Answer is needed asap

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
7 0
I think it is letter A ,man. yeah that gotta be the answer


Svet_ta [14]3 years ago
7 0
Since Landon has 4 times as more just divide 16 by 4.

The answer is B.

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If y=-3x + 2, find x when y= -13 *
Arturiano [62]

Answer:

x = 5

Step-by-step explanation:

You know what "y" equals, so you just need to insert the value into the equation, then solve for "x".

-13 = -3x + 2

-13 - 2 = -3x

-15 = -3x

5 = x

x = 5

7 0
3 years ago
The basic measure of mass in the metric system is called
tigry1 [53]

Answer:

Grams.

Step-by-step explanation:


6 0
3 years ago
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Let $\mu$ and $\sigma^2$ denote the mean and variance of the random variable x. determine $e[(x-\mu)/\sigma]$ and $e{[((x-\mu)/\
Nezavi [6.7K]
\mathbb E\left(\dfrac{X-\mu}{\sigma}\right)=\dfrac1\sigma\mathbb E(X)-\dfrac\mu\sigma=\dfrac{\mu-\mu}\sigma=0

\mathbb E\bigg(\left(\dfrac{X-\mu}\sigma\right)^2\bigg)=\dfrac1{\sigma^2}\mathbb E\left(X^2-2\mu X+\mu^2\right)=\dfrac{\mathbb E(X^2)-2\mu\mathbb E(X)+\mu^2}{\sigma^2}
=\dfrac{\mathbb E(X^2)-2\mu^2+\mu^2}{\sigma^2}=\dfrac{\mathbb E(X^2)-\mu^2}{\sigma^2}=\dfrac{\mathbb E(X^2)-\mathbb E(X)^2}{\sigma^2}
=\dfrac{\mathbb V(X)}{\sigma^2}=\dfrac{\sigma^2}{\sigma^2}=1
3 0
3 years ago
Three-sevenths of a number is 21. Find the number
ruslelena [56]
You can set up a proportion that looks like 3/7 = x/21. X being the number that you are trying to find. Seven goes into 21 three times. So multiply 3 also by that 3 to get 9. So three sevenths of twenty-one is 9.
7 0
3 years ago
Read 2 more answers
Help me solve please
Alex Ar [27]

Answer:

Step-by-step explanation:

The addition of angles ABD and DBC make up the larger angle ABC. We know that angle ABD = 65 and DBC = 60, therefore

angle ABC = 65 + 60 and

angle ABC = 125 degrees

5 0
3 years ago
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