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Viktor [21]
3 years ago
11

___ divided by 9=7 For some reason I can’t get it right

Mathematics
1 answer:
Hatshy [7]3 years ago
7 0

Answer:

63

Step-by-step explanation:

9*7=63

63/9=7

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Factor completely: 10a2 - 15a + 4ab - 6b.
svet-max [94.6K]

Answer:

<em>A</em>

Step-by-step explanation:

10 {a }^{2}  - 15a + 4ab - 6b \\ 5a(2a  -  3) + 2b(2a - 3) \\ (5a  + 2b)(2a - 3)

hopefully it makes sense

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4 0
3 years ago
A factory makes silicon chips for use in computers. It is known that about 90% of the chips meet specifications. Every hour a sa
Anastaziya [24]

Answer:

e. m = 16.2; s = 1.27

Step-by-step explanation:

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Let X the random variable of interest, on this case we can assume that the distribution for X is given by:

X \sim Binom(n=18, p=0.9)

The probability mass function for the Binomial distribution is given as:

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

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

Normal approximation

We need to check the condition in order to use the normal approximation.

np=18*0.9=16.2 \geq 10

So we see that we satisfy the condition and then we can apply the approximation.

If we appply the approximation the new mean and standard deviation are:

E(X)=np=18*0.9=16.2

\sigma=\sqrt{np(1-p)}=\sqrt{18*0.9(1-0.9)}=1.273

The best answer would be:

e. m = 16.2; s = 1.27

5 0
3 years ago
Which of the following is an example of a quadratic equation?
Ilya [14]

Hello!

Answer: C. x² - 64 - 0

Good luck! :)

8 0
4 years ago
The equation y=0.25x describes a proportional relationship between x and y. What is the constant of proportionality?
I am Lyosha [343]

Answer:

The constant of proportionality is for every 1 x, there is 0.25 y. y = 0.25, and on a graph, x is always the "1." Since x is worth 1, y must be worth 0.25.

Step-by-step explanation:

7 0
3 years ago
What is the solution to y = 0.7x for the replacement set x = {2}?.
grandymaker [24]
The question ask to solve and compute the said problem if x = 2 and the equation is y=0.7x. In that alone, the value of y is 1.4 so it means its solution, by means of representing it coordinate, it should be (2,1.4). I hope you are satisfied with my answer and feel free to ask for more 
7 0
3 years ago
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