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elena-s [515]
3 years ago
5

Carlos had $41 when he went to a bookstore. He had $10 left after buying some books. Which equation can be used to find a, the a

mount Carlos spent on books?​
Mathematics
1 answer:
jeka57 [31]3 years ago
3 0

Answer:

$41 - $a =$ 10

Step-by-step explanation:

$41 - $a =$ 10

$a = $ 41 - $10

$a= $ 31

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World Toy buys bicycles for $40 and sells them for $95. What is the percent mark-up in the price?
Arisa [49]

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Step-by-step explanation:

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3 years ago
Kavi solved the system
Marianna [84]

Answer:

She should have substituted y = 17 - 2x in the first equation

Step-by-step explanation:

3x + 4y = 33

2x + y = 17

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3x + 68 - 8x = 33

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Only one solution

6 0
3 years ago
The management of a restaurant with locations all over the country has developed a new hamburger that researchers believe will s
Sliva [168]

Using sampling concepts, it is found that the best way to perform a randomized experiment with the goal of determining if this new hamburger will sell better than the hamburger that is currently sold is as follows:

Randomly select 40 restaurants, let each one decide if it wants to sell the new hamburger, and compare sales in those restaurants to sales in the restaurants that chose not to sell the new hamburger.

<h3>What is sampling?</h3>

It is is a common statistics practice, when we want to study something from a population, we find a sample of this population.

For example:

I want to estimate the proportion of New York state residents who are Buffalo Bills fans. So i ask, lets say, 1000 randomly selected New York state residents whether they are Buffalo Bills fans, and expand this to the entire population of New York State residents.

In this problem, a sample of randomly selected restaurants should be taken to sell the new hamburger, and then be compared with the ones who sell the old hamburger to see if sales increased, hence the correct option is:

Randomly select 40 restaurants, let each one decide if it wants to sell the new hamburger, and compare sales in those restaurants to sales in the restaurants that chose not to sell the new hamburger.

More can be learned about sampling concepts at brainly.com/question/25122507

3 0
2 years ago
Anne is checking out of a hotel. The price
kolezko [41]
The tax is 2.88 so it would be 48.00 +2.88=50.88
She will pay $50.88 with tax
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2 years ago
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