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Fofino [41]
2 years ago
11

Wezi has sixty-three $5-bills to the bank to exchange them for $20-bills. How many $20-bills does Wezi get? Is there money left

over? explain
Mathematics
1 answer:
In-s [12.5K]2 years ago
5 0

Answer:

A. Wezi will get fifteen (15) $20-bills.

B. There will be $15 left.

Step-by-step explanation:

A. We have been given that Wezi has sixty-three $5 bills.

Let us find the total amount of money that Wezi has by multiplying 63 by 5.

\text{Total amount of money Wezi has}=63\times\$5

\text{Total amount of money Wezi has}=\$315

Therefore, Wezi has $315.

Since Wezi wants to exchange her total money of $5 bills with $20 bills, so let us divide total amount of money by 20.

\text{The number of \$20 bills}=\frac{\$315}{\$20}

\text{The number of \$20 bills}=15.75

Since we cannot 0.75 of a $20 bill, so Wezi will get 15 $20-bills.

We can see that 315 is not completely divisible by 20, so let us subtract greatest multiple of 20 from 315.

We can see 15\times 20=300, so upon subtracting 300 from 315 we will get,

\$315-\$300=\$15

Therefore, there will be $15 left.

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2 years ago
A pet store contains 35 light green parakeets (14 females and 21 males) and 44 sky blue parakeets (28 females and 16 males). You
Mamont248 [21]
You can use this formula <span>P(AorB) = P(A) + P(B) - P(AandB) 

Given:
35 LG (14 F & 21 M)
44 SB (28 F & 16 M)

Req:
- the probability that it is a female (F) or a sky blue (SB)

Sol:
</span>P(F or SB) = P(F) + P(SB) - P(F and SB) 
                 = [(14 F + 28 F)/(35 + 44)] + [(44 SB)/(35 + 44)] - [(28 F)/(35 + 44)]
                 = 53.16 + 55.70 - 35.44
                 = 73.42%

You have to deduct 28 female parakeets from 44 sky blue parakeets because the 28 parakeets are already accounted for in the female parakeets. You can also think of how many ways you can choose a female parakeet and a sky blue parakeet. Add all female parakeets (14 + 28) = 42. Sky blue parakeet equaled to 44. Minus the 28 female parakeets included in the sky blue parakeet to avoid double counting. 42 + 44 - 28 = 58 divided by 79 (35 + 44) total parakeets = 73.42%


7 0
2 years ago
In an examination, a candidate has to score 40% marks to pass. Anil scores 22 and failed by 8 marks. What is the full marks?​
alexgriva [62]

Answer:

75

Step-by-step explanation:

Let full marks be x

Then pass marks is 40% of x which is 0.4x

As per given, we have

22= 0.4x - 8

Solving for x

0.4x = 30

x = 30/0.4

x = 75

So full marks is 75

8 0
2 years ago
Consider the following expression -2m(m+n-4)+5(-2m+2n)+n(m+4n-5) which of the following is an equivalent expression
velikii [3]
The answer is:

-2m²+4n²-mn-2m+5n

aka letter c in algebra nation
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2 years ago
In 7 days, Mario cooked 98 pounds of spaghetti. Each day after the first, he cooked 2 more pounds than he cooked than the day be
yan [13]

so I need to do a list of numbers like this:

98, 100, 102, 104, 106, 108, 110.

104 is the median number

add 98+100+102+104+106+108+110=728

divide by seven 728 / 7 = 104

so the difference between the median 104 and the avarage 104 is 0 they are

104=104


hope this helps

7 0
1 year ago
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