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SCORPION-xisa [38]
3 years ago
11

16.4.57 Question Help A box contains eighteen $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill You bl

indly reach into the box and draw a bill at random What is the expected value of your draw? The expected value of the draw is SL (Round to the nearest cent)
Mathematics
1 answer:
Rudiy273 years ago
5 0

Answer:

$ 7.7

Step-by-step explanation:

Given,

There are 18 $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill,

Total number of bills = 18 + 10 + 8 + 3 + 1 = 40,

\because \text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}

Thus,

The probability of $ 1 = \frac{18}{40}

The probability of $ 5 = \frac{10}{40}

The probability of $ 10 = \frac{8}{40}

The probability of $ 20 = \frac{3}{40}

The probability of $ 100 = \frac{1}{40}

If a bill is selected randomly,

The expected value of the bill

=\frac{18}{40}\times 1+\frac{10}{40}\times 5+\frac{8}{40}\times 10+\frac{3}{40}\times 20+\frac{1}{40}\times 100

=\frac{18+50+80+60+100}{40}

=\frac{308}{40}

= $ 7.7

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Answer:

(x + 7) (x + 7)

Step-by-step explanation:

What's the square root of x^2?

That's x

What's the square root of 49

That's 7

And what makes 14?

7 + 7 = 14

So therefore the answer is (x + 7) (x + 7)

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vladimir2022 [97]

Answer:

8

Step-by-step explanation:

8 possible outcomes

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3 years ago
6 An account pays
Sergio039 [100]

Answer: £122.4

Step-by-step explanation:

Given

The rate of interest is 4%

The principal invested is £1500

the time period is 2 years

Compound interest is given by

C.I.=P(1+r\%)^t-P

put values

C.I.=1500(1+0.04)^2-1500\\C.I.=1500[1.04^2-1]\\C.I.=1500[1.0816-1]\\C.I.=1500\times 0.0816\\C.I.=122.4

Therefore, interest earned is £122.4

5 0
2 years ago
A small company borrows 90,000 at 12%compounded monthly.The loan is due in 7 years. How much interest will the company pay?
kolezko [41]
90,000 × 0.12 = 10,800
4 0
3 years ago
How many times greater than √2 is√32?<br><br> Can anybody help out here?
Anarel [89]

Answer:

4

Step-by-step explanation:

Root32= 4×root2

Root32 is 4 times greater than root2

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