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3 years ago

14. Use mental math to simplify (4.55 +27) + 5.45.32131837

Mathematics

1 answer:

STatiana [176]3 years ago

3 0

Answer: 37

Step-by-step explanation:

4.55 + 27 = 31.55

31.55 + 5.45 = 37

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Paula knows the total cost for 100 students will be $750, and the cost total cost for 150 students is $1050. What is the caterer

Roman55 [17]

Step-by-step explanation:

the price charged for 100 students reflects the cost per student that applies to the order as a whole.

100 * 6 = $600, so the fixed cost is 750-600 = 150.

...

We can check this by substituting in the other equation.

Does 150*6 + 150 = 1050?

150*6=900

900+150 = 1050.

Yes, it does

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We can express this relationship by the equation:

y = mx + b

where

y = total cost

m = $6 per student

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y = 6x + 150

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Step-by-step explanation:

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3 years ago

Vending machines can be adjusted to reject coins above and below certain weights. The weights of legal U.S. quarters have a norm

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Answer: The percentage of legal quarters will be rejected by the vending machine = 2.275%

Step-by-step explanation:

Given: The weights of legal U.S. quarters have a normal distribution with a mean of 5.67 grams and a standard deviation of 0.07 gram.

Let x be the weights of legal U.S. quarters .

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2 years ago

14. Use mental math to simplify (4.55 +27) + 5.45.32131837​

14. Use mental math to simplify (4.55 +27) + 5.45.32131837