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3 years ago

How do you solve this

Mathematics

1 answer:

Mumz [18]3 years ago

3 0

Answer:

use a graphinig calculator

Step-by-step explanation:

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90 POINTSSSSSSS:

denis23 [38]

Answer:

Part A: 12 plus x, the x being how much money he made on Sunday.

Part B: 2 plus x times 2

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Please answer these questions in the image ( click image to see fully )

drek231 [11]

9) x= -7

10) x= 10

11) x= 5

12) x= 6

13) x= 4

14) x= -9

15) x= 3

16) x= 9

sorry it took so long! hope this helps!! :)

5 0

3 years ago

Suppose that 45% of students in a college have a smart phone. If you select three students at random, what is the probability th

Sidana [21]

Answer:

$P(X=3)$

And we can use the probability mass function and we got:

$P(X=3)=(3C3)(0.45)^3 (1-0.45)^{3-3}=0.091$

Then the probability that all three have a smart phone is 0.091

Step-by-step explanation:

Let X the random variable of interest "number of students with smartphone", on this case we now that:

$X \sim Binom(n=3, p=0452)$

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 we want to find this probability:

$P(X=3)$

And we can use the probability mass function and we got:

$P(X=3)=(3C3)(0.45)^3 (1-0.45)^{3-3}=0.091$

Then the probability that all three have a smart phone is 0.091

8 0

3 years ago

Lionel is buying a computer that is normally$890 the state sales tax rate is 6% what is the total cost of a computer including s

patriot [66]

Find 6% of 890 and then add it to 890. So,
890x0.06=53.4
890+53.4=$943.50

3 0

3 years ago

Please help me with this question

melamori03 [73]

Answer:

1.4

Step-by-step explanation:

hope it helped

8 0

3 years ago

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