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3 years ago

Y=2x+7how do we solve this

Mathematics

2 answers:

inessss [21]3 years ago

5 0

Answer:

Step-by-step explanation:

Use the slope-intercept form to find the slope and y-intercept

Any line can be graphed using two points.

Select two values, and plug them into the equation to find the corresponding

values.

Graph the line using the slope and the y-intercept, or the points.

nalin [4]3 years ago

4 0

Y=x+3.5 if you divide by 2 to simplify

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The cost in dollars of producing x units of a particular brand of notebook is C(x) = x2 – 400.

yulyashka [42]

<span>
A)
C(102) = 102^2 – 400 = 10004
</span>C(100) = 100^2 – 400 = 9600

average rate of change = (10004<span>- 9600)/(102 - 100) = 404/2 = 202

</span>B)
C' = 2x = 2 (100) = 200

8 0

3 years ago

-6=2n-n please help I hate math

Crank

Answer:

-6 = n

Step-by-step explanation:

-6=2n-n

Combine like terms

-6 = n

4 0

3 years ago

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Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

$3^{5} = 243\\3^{2} = 9\\243/9 = 27\\27 = 3^{3}$

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3 years ago

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Dylan read 6 books. Kylie read double the number of books that Dylan read. How many books did Kylie read?

alisha [4.7K]

Kylie read 12 books because if u take 6x2 u get 12 so hopes this helps!!!

7 0

4 years ago

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(CO 3) Fifty-four percent of US teens have heard of a fax machine. You randomly select 12 US teens. Find the probability that th

11111nata11111 [884]

Answer:

a) $P(X=6)=(12C6)(0.54)^6 (1-0.54)^{12-6}=0.217$

b) $P(X> 8) = P(X\geq 9)= P(X=9)+P(X=10)+P(X=11)+P(X=12)$

$P(X=9)=(12C9)(0.54)^9 (1-0.54)^{12-9}=0.0836$

$P(X=10)=(12C10)(0.54)^{10} (1-0.54)^{12-10}=0.0294$

$P(X=11)=(12C11)(0.54)^{11} (1-0.54)^{12-11}=0.00628$

$P(X=12)=(12C12)(0.54)^{12} (1-0.54)^{12-12}=0.000615$

And adding the values we got:

$P(X> 8) = P(X\geq 9)= P(X=9)+P(X=10)+P(X=11)+P(X=12)= 0.0836+0.0294+0.00628+0.000615 = 0.120$

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 teens that have heard of a fax machine", on this case we now that:

$X \sim Binom(n=12, p=0.54)$

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:

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

Part a

For this case we want this probability:

$P(X=6)=(12C6)(0.54)^6 (1-0.54)^{12-6}=0.217$

Part b

For this case we want this probability:

$P(X> 8) = P(X\geq 9)= P(X=9)+P(X=10)+P(X=11)+P(X=12)$

$P(X=9)=(12C9)(0.54)^9 (1-0.54)^{12-9}=0.0836$

$P(X=10)=(12C10)(0.54)^{10} (1-0.54)^{12-10}=0.0294$

$P(X=11)=(12C11)(0.54)^{11} (1-0.54)^{12-11}=0.00628$

$P(X=12)=(12C12)(0.54)^{12} (1-0.54)^{12-12}=0.000615$

And adding the values we got:

$P(X> 8) = P(X\geq 9)= P(X=9)+P(X=10)+P(X=11)+P(X=12)= 0.0836+0.0294+0.00628+0.000615 = 0.120$

5 0

3 years ago

Read 2 more answers

Y=2x+7how do we solve this​

Y=2x+7how do we solve this