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denpristay [2]
3 years ago
6

What is the point-slope form of a line with slope - 5 that contains the point (2, -1)?

Mathematics
2 answers:
allsm [11]3 years ago
7 0

What is the point-slope form of a line with slope - 5 that contains the point

(2, -1)?

Komok [63]3 years ago
3 0

Answer:

2, 8

Step-by-step explanation:

and this is the answer

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7x-y=-10 (linear combination)<br> -7x+5y=-6
andreyandreev [35.5K]

(-2,-4) is the correct answer.

Hope this helps:)

5 0
3 years ago
Suppose a bag contains many marbles, 54% of which are purple. You draw 5 marbles from the bag with replacement.
dolphi86 [110]

Part A

Use the binomial probability distribution formula.

p = 0.54 = probability of getting a purple marble

n = 5 = sample size

x = 2 = number of purple we want to get

P(x) = \frac{n!}{x!(n-x)!}*p^x*(1-p)^{n-x}\\\\P(2) = \frac{5!}{2!(5-2)!}*0.54^2*(1-0.54)^{5-2}\\\\P(2) = 10*0.54^2*0.46^3\\\\P(2) = 0.283831776\\\\

The \frac{n!}{x!(n-x)!} portion is from the nCr combination formula. The exclamation marks indicate a factorial.

Alternatively, you could use Pascal's Triangle for that portion.

<h3>Answer: 0.283831776</h3>

This decimal value is exact. Round it however you need to.

============================================================

Part B

To find the expected value, aka the mean, we multiply the sample size and probability of getting a purple marble on any single selection.

n*p = 5*0.54 = 2.7

<h3>Answer: 2.7</h3>
6 0
2 years ago
The difference of a number times 2 and 3 equals 8.
laiz [17]
I think the answer is 2 but I'm not sure
8 0
3 years ago
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Mick deposit $1,000
Ulleksa [173]

Answer:

Step-by-step explanation:

6 0
2 years ago
My question is y = 4x + 1 and my options are<br>a. 4, 3 <br>b. 4,1<br>c. 1,4<br>d. 3,1​
Akimi4 [234]

Answer:

B. 4,1

Step-by-step explanation:

7 0
3 years ago
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