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3 years ago

Which system of linear equations appears to have a solution of (-1, 4)

Mathematics

2 answers:

katovenus [111]3 years ago

8 0

Answer:

its D the last one

Step-by-step explanation:

Got it right on Edge duh

PilotLPTM [1.2K]3 years ago

6 0

Answer:

Step-by-step explanation:

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Quadrilateral abcd is rotated 90 degrees clockwise about the origin. What are the coordinates of A'B'C'D?

Nana76 [90]

Answer:

your answer is A

Step-by-step explanation:

have a nice day!! ^_^

6 0

3 years ago

Read 2 more answers

1) Which of the following has a probability of 0?

melamori03 [73]

Answer:

3. rolling a sum of 20 with two standard dice

Step-by-step explanation:

If something has a probability of 0 then there is no chance of it happening

A standard die goes up to 6. The max sum you can get by rolling two dice would be 12 as 6 + 6 = 12. So you have no chance of rolling a sum of 20 with two standard dice therefore the probability would be 0.

6 0

2 years ago

Read 2 more answers

Which equations show inverse operations of each other? Choose exactly two answers that are correct. A. 9÷13 =27 B. 27×13 =9

nirvana33 [79]

Okay a,b,c don't make sense at all. but if I had to choose I'd go with A and B since the exact numbers are used

8 0

4 years ago

If 90 percent of automobiles in Orange County have both headlights working, what is the probability that in a sample of eight au

Marta_Voda [28]

Answer:

$P(X \geq 7) = P(X=7) +P(X=8)$

And we can find the individual probabilities using the probability mass function

$P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826$

$P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305$

And replacing we got:

$P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131$

Step-by-step explanation:

Previous concepts

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".

Solution to the problem

Let X the random variable of interest "number of automobiles with both headligths working", on this case we now that:

$X \sim Binom(n=8, p=0.9)$

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:

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

And for this case we want to find this probability:

$P(X \geq 7) = P(X=7) +P(X=8)$

And we can find the individual probabilities using the probability mass function

$P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826$

$P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305$

And replacing we got:

$P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131$

7 0

3 years ago

Read 2 more answers

Spencer is dividing 3 by 44 what will keep repeating in the quotient

Naily [24]

Answer:

=0.0681818181818182

Step-by-step explanation:

The repeating number in this is 18

Hope this helps (:

7 0

3 years ago