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Yakvenalex [24]
4 years ago
14

How does pemdas work?! It always confuses me!

Mathematics
2 answers:
const2013 [10]4 years ago
3 0

So PEMDAS is order of operations basicly.

P=Parenthesis

E=Exponets

M=Multiplication

D=Division

A=Addition

S=Subtraction


For example: 2x4+(9x9)-1

When solving order of operations you ALWAYS start with the problem in the parentheses.

(9x9)=81

Now multiplication comes next so, 2x4=8

Then addition, 8+81=88

Lastly subtraction, 88-1=81



skad [1K]4 years ago
3 0

PEMDAS stands for:

P - Parentheses

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

here is a very easy example

56 + 41 x 14 - 12

the multiplication would come first.

= 56 + 574 - 12

then addition.

= 630 - 12

and for the final step we subtract.

= 618!

We get the final answer of 618!

i hope i helped ;)

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80 I believe.. I could be wrong though-
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iVinArrow [24]

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128°

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8 0
3 years ago
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Mario earns $62.50 for every 5 hours of work how many hours does he have to work to earn $275 cards
Mama L [17]

Answer:

22 hours

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8 0
3 years ago
Sarah is making strings of beads in the first string she uses 3 beads and she triples the number of beads in each of the next st
xenn [34]

Answer:

She uses 243 beads for the 5th string.

Step-by-step explanation:

In this problem, we can see a pattern. If she triples the number of beads in each of the next strings, that means that we just take the last number and multiply by 3. If the first string uses 3, then:

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The third uses 27, 9 * 3 = 27

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6 0
4 years ago
90% of runners who started a marathon completed it. Of those, 30% are men. If 270 men completed the marathon, then how many tota
il63 [147K]

Given- 90% of runner completed the marathon.

out of which 30% are man.

To proof -  let the total number of runner be y.

the men completed the marathon be 30% of the 90%.

thus we have

30% of 90% of y = 270

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now solving the above equation

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Thus solving the equation

y = 1000

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Hence proved










7 0
3 years ago
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