Can someone help me on question 5

Mathematics

1 answer:

Savatey [412]3 years ago

7 0

Your answer is $135. Good luck on your homework

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A child types the letters q, w, e, r, t, y, randomly producing 1000 letters in all. what is the expected number of times that th

notka56 [123]

1/6*1/6*1/6*1/6 = 1/1296 = 0.078% probability of ANY 4-letter sequence (including qqqq)
1000/1296 is less than 1.
Expected number of times qqqq (or any given 4-letter sequence) will appear in 1000 letters is 0.

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3 years ago

I really need help!

mario62 [17]

Answer:

Step-by-step explanation:

4 0

4 years ago

X-7 > 10<br> what is the answer to this ? i don’t understand it i don’t know how to do it.

11Alexandr11 [23.1K]

This is just simplification. If you havent done algebra before it may be difficult but you probably have. Ok we need to get x on its on so that we know what x is. So to make X on its own, we need to get rid of -7. So we plus 7 on both sides.

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3 years ago

Long rationalise surds questions <br>pls help

Katena32 [7]

Answer:

Noah mistakenly added 25 and 7 in denominator instead of subtracting in the third step.

Step-by-step explanation:

Noah had to rationalize the denominator of $\frac{32}{5-\sqrt{7}}$