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alekssr [168]
2 years ago
11

I’ve spent too long on this. Pls help!!

Mathematics
2 answers:
nika2105 [10]2 years ago
7 0

Answer: bro i dont know. SORRY :(

dimulka [17.4K]2 years ago
6 0

Answer:

14 10 cent coins

Step-by-step explanation:

Assumption method:

Assume all are 10 cent

10x48=$4.80

8.20-4.80=3.40

10x47=$4.70

1x20=$0.20

$4.70+$0.20=$4.90

Gap= $3.40

Difference=$4.90-$4.80=$0.10

Gap÷Difference= $3.40÷0.10=34 20 cent coins

48-34=14 10 cent coins

 

I think its like this.

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X+y=3<br> 2x-y=0 <br> substituition method
Veronika [31]

Answer:

(1, 2 )

Step-by-step explanation:

x + y = 3 (subtract x from both sides )

y = 3 - x → (1)

2x - y = 0 → (2)

Substitute y = 3 - x into (2)

2x - (3 - x) = 0

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5 0
2 years ago
Subtract.(8j³ + 9j² + 6j + 8) - (j² + 8)
german

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The first paranthesis is positive, so nothing changes as we remove it:

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before removing the second parenthesis, we realize it is preceded by the negative sign of the indicated subtraction. Then as we remove the parenthesis, we flip the signs of all terms inside it:

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Answer:

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Step-by-step explanation:

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Answer:

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