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Leya [2.2K]
2 years ago
12

What is 18+(-8) + 11 simplified?

Mathematics
1 answer:
FromTheMoon [43]2 years ago
8 0
18 + (-8) + 11

Adding a negative number is the same as subtracting a positive number. So "18-8" is the same thing as "18+ -8".

18 - 8 + 11

10 + 11

21
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A car dealership pays $8,350 for a car. They Mark up the price by 17.4% to get the retail price. What is the retail price of the
olga55 [171]

A car dealership pays the sum of $8,350 for a car

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Mark up = 17.4%

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6 0
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An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 g of an alloy containing 12% copper with 78 g
givi [52]

Given :

An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 g of an alloy containing 12% copper with 78 g of an alloy containing 92% copper.

To Find :

How many grams of copper are in the resulting mixture what percentage of the resulting mixture is copper.

Solution :

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\%=\dfrac{82.44}{50+78}\\\\\%=64.4\ \%

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Answer:

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