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mixer [17]
3 years ago
9

Nine out of 10 students prefer math class over lunch how many students do not prefer math is 200 students were asked

Mathematics
2 answers:
dezoksy [38]3 years ago
8 0
The answer is 180. Put 9over 10 times x over 200 and cross multiply
max2010maxim [7]3 years ago
4 0

Answer:

20 students prefer math



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Rita and Tina each make $11 an hour working as cashiers at a supermarket. Last week, Rita worked r hours while Tina worked t hou
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Rita = (11r + 32) 
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3 years ago
One student can paint a wall in 16 minutes. Another student can paint the same wall in 24 minutes. Working together, about how l
Mazyrski [523]
Let's look at work rates per minute.

Together they can paint the wall in x minutes.
Working together, in 1 minute, they do 1/x of the job.

The student who paints the wall in 16 minutes does 1/16 of the job in 1 minute.
The student who paints the wall in 24 minutes does 1/24 of the job in 1 minute.
Together, they do 1/16 + 1/24 of the job in 1 minute, but from above, we see that together, they do 1/x of the job in 1 minute, so 1/16 + 1/24 must equal 1/x. That gives us our equation.

1/16 + 1/24 = 1/x

1/16 * 3/3 + 1/24 * 2/2 = 1/x

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Answer: It takes them 9.6 minutes, or about 10 minutes to do the job together.


5 0
3 years ago
Ben is decorating his home with vases of flowers. He bought glass vases that cost $22 each and ceramic vases that cost $14 each.
Evgen [1.6K]

Answer:

Step-by-step explanation:

x + y = 10

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x + 6 = 10

x = 4 glass vases

6 0
3 years ago
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You have to subtract the largest number from the smallest and you get your range. Which would be 7.5-2.1 equals 5.4 which is b.
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3 years ago
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suppose tortilla chips cost 24.5 cents per ounce. what would a bag of chips cost if it contained 20 oz? Round your answer to the
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Answer:

Step-by-step explanation:

So this is multiplication

24.5 times 20 in dollars is $4.90 if we round it than it will be 5 dollars

6 0
2 years ago
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