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3 years ago

Tewanda read 2,000 word news article in 8 minutes. How fast did she read the news article? Explain how you found your answer.

Mathematics

1 answer:

Blababa [14]3 years ago

6 0

Answer:

She read 250 words per minute.

Step-by-step explanation:

Simply divide the words read by the time took to read that amount = (2000/8) words per minute = 250 words per minute.

Hope this helped!

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Hdisowiejejkwoeooeoe

ra1l [238]

Answer:

Step-by-step explanation:

The absolute value of a number different from 0 is always positive

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15 + 83 = 98

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3 years ago

F(x) = -22 + x + 14<br> Find f(2)

Pachacha [2.7K]

Answer:

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f(x) =-22+x+14 put 2 in x

f(2)=-22+2+14

f(2) =38

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3 years ago

Rewrite the expression that is equivalent to x^2/3.<br> -pasagot po please-.-

EastWind [94]

Answer:

$\sqrt[3]{x^{2}}$

Step-by-step explanation:

$x^{2/3} = \sqrt[3]{x^{2}}$

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3 years ago

40% of Oatypop cereal boxes contain a prize. Hannah plans to keep buying cereal until she gets a prize. What is the probability

aleksley [76]

Answer:

$(0.6)^{n}+n(0.4)(0.6)^{n-1}+\frac{n(n-1)(0.4)^{2}0.6^{n-2}}{2} +\frac{n(n-1)(n-2)0.4^{3}0.6^{n-3}}{6}$

Step-by-step explanation:

We will use the binomial distribution. Let X be the random variable representing the no. of boxes Hannah buys before betting a prize.

Our success is winning the prize, p =40/100 = 0.4

Then failure q = 1-0.4 = 0.6

Hannah keeps buying cereal boxes until she gets a prize. Then n be no. times she buys the boxes.

P(X ≤ 3) = P(X=0) +P(X=1)+P(X=2)+P(X=3)

= $\binom{n}{0}p^{0}q^{n-0}$ + $\binom{n}{1}p^{1}q^{n-1}$ + $\binom{n}{2}p^{2}q^{n-2}$ + $\binom{n}{3}p^{3}q^{n-3}$

= $q^{n}+npq^{n-1}$ + $\frac{n(n-1)(p)^{2}q^{n-2}}{2}$ + $\frac{n(n-1)(n-2)p^{3}q^{n-3}}{6}$

= $(0.6)^{n}+n(0.4)(0.6)^{n-1}+[tex]\frac{n(n-1)(0.4)^{2}0.6^{n-2}}{2} +\frac{n(n-1)(n-2)0.4^{3}0.6^{n-3}}{6}$

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3 years ago

Read 2 more answers

Is there a formula for problems like these? How do I even begin to solve it?

Pachacha [2.7K]

Well, they're saying 9 with an exponet of 2 multiplied by something equals 27..... Hmmm.....

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3 years ago