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Alexeev081 [22]
3 years ago
7

Solve -24 + (1-4)^2​

Mathematics
2 answers:
ElenaW [278]3 years ago
6 0

Answer:

-15

Step-by-step explanation:

-24 + (1-4)^2​    (solve parentheses first)

= -24 + (-3)^2 (solve exponent)

= -24 + 9

= -15

Irina18 [472]3 years ago
3 0

Answer: -15

Step-by-step explanation:

You do what is in parentheses which comes out to be -3

So -24+ (-3) to the second power

Then do the exponent which comes out to be 9

So now we have -24+9

Solve this then we have our answer of -15

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Answer:

700

Step-by-step explanation:

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2 years ago
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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
When determining the volume of a shape, you should use cubic units in your final answer. true or false.
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Answer:

true

Step-by-step explanation:

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Latoya has b decks of cards . Each deck has 52 cards in it , what is the expression for the total numbers of cards latoya has
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Answer:

52b

Step-by-step explanation:

She has 52 cards per deck, and b decks.

This means she has 52b cards.

How this works:

For 1 deck, she has 52 cards, or 52×1 cards.

For 2 decks, she has 104 cards, or 52×1 cards.

For 5 decks, she has 260 cards, or 52×5 cards.

For 10 decks, she has 520 cards, or 52×10 cards.

Therefore, for b decks, she has 52×b, or 52b cards.

**This content involves writing algebraic expressions, which you may wish to revise. I'm always happy to help!

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3 years ago
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alisha [4.7K]
The value of 3 in 6,300 is 10 times the value of 3 in 530. And your welcome.
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