One song download costs $2 and one movie download costs $11.
Step-by-step explanation:
Let,
Price of one song download = x
Price of one movie download = y
According to given statement;
8x+9y=115 Eqn 1
15x+9y=129 Eqn 2
Subtracting Eqn 1 from Eqn 2
Dividing both sides by 7
Putting x=2 in Eqn 1
Dividing both sides by 9
One song download costs $2 and one movie download costs $11.
Keywords: linear equation, elimination method
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Wait hold on it should be C I think correct me if I'm wrong doe-
Answer:
<h2><em>
If digits can be repeated: 36</em></h2><h2><em>
If the digit can not be repeated: 30</em></h2>
Step-by-step explanation:
<em>If digits can be repeated:</em>
On the first and second place we have 6 digits to choose from.
Therefore we have 6 · 6 = 36 two-digit numbers.
<em>If the digit can not be repeated:</em>
On the first place we have 6 digits to choose from and on the second place we have 5 digits to choose from.
Therefore we have 6 · 5 = 30 two-digit numbers.
Answer: 8x+10y
Step-by-step explanation:
2(4x)= 8x
2(5y)= 10y
8x+10y