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denis-greek [22]
2 years ago
14

I could really use some help on the answer to the question attached below and the method please - thanks

Mathematics
1 answer:
son4ous [18]2 years ago
7 0

Answer:

I am not so sure about Elisa's opinion, thanks.

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The graph shows the distribution of the number of text messages young adults send per day. The distribution is approximately Nor
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You'd think its 34% but apparently it's 16%.

I hope this is right. If its not then it must be 34%.

(A) -- or maybe (B). 80% confident it is A.

ED2021

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3 years ago
carly wants to ride the bumper cards 5 times and the ferris wheel 2 times. it cost 5 tickets to ride the bumper cars and 5 ticke
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3 years ago
A jar contains n nickels and d dimes. There is a total of 236 coins in the jar. The value of the coins is $15.75. How many nicke
just olya [345]

The total if all 236 coins were nickels would be $11.80, which is $3.95 short of the actual amount.

Replacing a nickel with a dime adds $0.05 to the total value, so there must have been $3.95/$0.05 = 79 such replacements.

There are 79 dimes.

There are 236 -79 = 157 nickels.

_____

Using the given variables, the problem statement gives rise to two equations. One is the based on the number of coins. The other is based on their value.

  • n + d = 236
  • .05n +.10d = 15.75

Solving the first for n, we get

... n = 236 - d

Substituting that into the second equation, we have

... .05(236 -d) +.10d = 15.75

... .05d = 15.75 -236·.05 . . . . . collect terms, subtract .05·236

... d = 3.95/.05 . . . . . . . . . . . . . divide by .05

... d = 79

... n = 236-79 = 157

___

The solution should look familiar, as it matches the verbal description at the beginning.

6 0
4 years ago
(4−1)(4+1)+2(−)<br><br> Can someone help me with this? It's supposed to be "Simplify the Equation"
Nikolay [14]
4-1=3 4+1=5+2=7 7-3=4. 4 is your answer
4 0
3 years ago
Please I NEED AN ANSWER
Alinara [238K]

Answer:

2. m<6 +m<7 =180

3. m<2 and m<4 are supplementary

5. Substitution

6. m<6 = m<2 ------ Subtraction

7. Corresp. < s =

Hope This Helps!!

6 0
3 years ago
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