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Vera_Pavlovna [14]
3 years ago
13

The mean of four numbers is 70. The mean increases to 80 when a fifth number is added. What is the fifth number?

Mathematics
1 answer:
irga5000 [103]3 years ago
7 0
The fifth number is 90
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Annette has finished 20 of her homework problems. That is 80% of the total assinged by her math teacher. How many pronlems were
horrorfan [7]
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Evaluate<br> 3/2+(-k)+(-2) where k= -5/2
marusya05 [52]
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Need help with question 5) &amp; 6)<br> TIA☺️
mart [117]

Answer:

5.

1. a

2.d

3.b

4.e

5.c

Step-by-step explanation:

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7 0
3 years ago
Evaluate 7m+2n-8p/n m=4, n=2, and p=1.5
Firlakuza [10]

Steps to solve:

7m + 2n - 8p/n

~Substitute

7(4) + 2(2) - 8(1.5)/2

~Simplify

28 + 4 - 12/2

~Simplify

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~Add

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~Subtract

26

Best of Luck!

4 0
3 years ago
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boyakko [2]

Step-by-step explanation:

% calculations are totally easy, if you remember to always find and the use 1%.

100% = $2.85

1% = 100%/100 = 2.85/100 = 0.0285

the price difference was

2.91 - 2.85 = $0.06

how many % are these $0.06 compared to yesterday's price ?

that is how many times 1% can fit into this number.

0.06 / 0.0285 = 2.105263158...%

so, rounded this is 2.1%

3 0
2 years ago
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