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kifflom [539]
4 years ago
9

What is the first step in simplifying the expression 11x-2-3(1-7x)^2÷(x+1)

Mathematics
2 answers:
dangina [55]4 years ago
6 0
You could do this:

11x-2-3(1-7x)^2/(x+1)

= 6x(1-7x)^2/(x+1)

(remember, this the first step only)
Otrada [13]4 years ago
3 0
You must use PEMDAS formula in order to solve this 

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Solve photo question. Mathematics. Please. Easy one. And last one.
Elan Coil [88]
A collection of nickels and dimes is worth $4.40. There are 53 coins in all. How many nickels are there?

Nickel is a US coin worth 5 cents or 0.05.
Dime is a US coin worth 10 cents or 0.10

n + d = 53
0.05n + 0.10d = 4.40

n = 53 - d
0.05(53 - d) + 0.10d = 4.40  
2.65 - 0.05d + 0.10d = 4.40
0.05d = 4.40 - 2.65
0.05d = 1.75
d = 1.75 / 0.05
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n = 53 - d
n = 53 - 35
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There are 18 nickels and 35 dimes.

0.05n + 0.10d = 4.40
0.05(18) + 0.10(35) = 4.40
0.90 + 3.5 = 4.40
4.40 = 4.40
4 0
3 years ago
Read 2 more answers
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