Solve the following equation: 6.4x + 8.2 = 85
1 answer:
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Answer:
(D)
Step-by-step Explanation:
Assuming that the equation = p, we can convert the equation into this.
We can convert into 9p because
× 9 =
Now we simplify this equation.
We can subtract 9p from both sides of the equation.
Re-ordering the equation gets us:
So, (D) is equivalent to the original expression of
Answer:
15 quarters and 10 nickels
Step-by-step explanation:
multiply the first equation by -0.25 and add the second equation to it
________________
has 10 nickels
has 15 quarters
10(.05) +15(0.25) = 0.5 + 3.75 = 4.25
Hope this helps