6.5X + 9(30) = 8(30+X)6.5X +270 = 240 + 8X270-240 = 8X-6.5X1.5X = 30X = 30/1.5 =20 ounces of $6.50 alloy9 is within 1 of 86.5 is within 1.5 of 81.5 is 3/2 of 130 is 3/2 of 20You know you need more of $9 alloy since it's closer to $8You need exactly 3/2 or 1.5 times more of the $9 alloy30 is 1.5 times 20
Answer:
2mn + 5m + 1
Step-by-step explanation:
1 interior angle = [(n-2)180]÷n
= [(7-2)×180]÷7
= 900÷7 = 128.57 °
an exterior angle = 180 - interior
= 180-128.57
= 51.43°
Answer:
Percentage: 115%
Decimal: 1.15
Fraction: 
Step-by-step explanation:
<u>Percentages, Fractions, and Decimals</u>
Assume we set 100% as the original price of the food that Michael consumed. When he leaves a 15% tip for the waitress, he is really paying 100%+15%=115% of the original price.
Now we express 115% as a decimal, simply dividing by 100:
115% = 115/100 = 1.15
To express it as a fraction, we simplify the division instead of calculating it:
115% = 
Simplifying by 5:
115% = 