3 years ago

Consider the steps for solving 3x2 – 42x + 9 = -5 for x by completing the square.

Mathematics

1 answer:

Karolina [17]3 years ago

3 0

The answer to this question will be C

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The cost of a t-shirt is 8.50. David has $50 with him. How many t-shirt can he buy?

anzhelika [568]

50÷8.5 = 5.88 but since we can’t have .88 of a person the answer would be five T-shirts

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1 year ago

What percent of 300 is 90. Help please

Katyanochek1 [597]

30%.

Well, the simplest way to do it is to put it as a fraction.
90/300.

This is the same as 3/10, which is the same as .30, which is the same as 30% :P

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2 years ago

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100 point to the first correct answer

miss Akunina [59]

Answer:

X ~ B(n, p)

Given: X ~ B(2, 5/17)

⇒ n = 2

⇒ p = 5/17

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$\sf P(X = x) = nC_x (1-p)^{(n-x)}p^x$

As n = 2, calculate P(X = 0), P(X = 1) and P(X = 2):

$\sf P(X = 0) = 2C0 (\frac{12}{17})^{(2-0)}(\frac{5}{17})^0=\dfrac{144}{289}}$

$\sf P(X = 1) = 2C1 (\frac{12}{17})^{(2-1)}(\frac{5}{17})^1=\dfrac{120}{289}}$

$\sf P(X = 2) = 2C2 (\frac{12}{17})^{(2-2)}(\frac{5}{17})^2=\dfrac{25}{289}}$

**Probability Distribution Table attached**

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1 year ago

What is 3/12 as a terminating decimal?

wlad13 [49]

Answer:

3/12 = 0.25

Step-by-step explanation:

hope this helps

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2 years ago

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Plz help me do these please its hard and I don't get it

Scrat [10]

Answer:

Step-by-step explanation:

2/10: 0.2

19/20: 0.95

19/6: 3.1667

17/4: 4.25

7/4: 1.75

9/20: 0.45

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2 years ago