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Cloud [144]
3 years ago
13

A school has a ratio of 5 boys to 9 total students. If the school has 360 students, how many will be girls?

Mathematics
1 answer:
Margaret [11]3 years ago
5 0
360/9=40
There are 40 "packs" of 9 students.
40*5=200 for the boys
40*4=160 for the girls
There are 200 boys and 160 girls.
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What is the solution to the system of equations?
alukav5142 [94]

Answer:

  (x, y) = (-4, 15)

Step-by-step explanation:

The two equations have the same coefficient for y, so you can eliminate y by subtracting one equation from the other. Here the x coefficient is largest for the first equation, so it will work best to subtract the second equation.

  (3x +y) -(2x +y) = (3) -(7)

  x = -4 . . . . . . . . simplify

Now, we can find y by substituting this value for x.

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The solution is (x, y) = (-4, 15).

6 0
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how much money has to be invested at 3.3% interest compounded constinuously to have $45,00 after 19 years
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3 0
3 years ago
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kykrilka [37]

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6 0
3 years ago
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Vitek1552 [10]

12£ and 42£

Step-by-step explanation:

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4 0
3 years ago
Sakura speaks 150 words per minute on average in Hungarian, and 190 words per minute on average in Polish. She once gave cooking
marusya05 [52]

Answer:3 minute

Step-by-step explanation:

Sakura speaks hungarian =150 words per minute

Sakura speaks polish =190 words per minute

and it is given she speaks 270 more words in polish than in hungarian

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t=2 mins

therefore sakura speaks hungarian for 2 mins and polish for 3 mins

6 0
3 years ago
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