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Lostsunrise [7]
3 years ago
15

In a class of 31 pupils, 19 like apples, 15 like oranges and 4

Mathematics
1 answer:
Natalija [7]3 years ago
8 0
34 “pupils” like both apples and oranges
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Simplify (5x3− x + 14) − (3x2− 9x + 4)
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Simplify ( 5 x 3-x+14)-(3 x 2-9 x + 4)= 5x3 - 3x2+8x+10
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3 years ago
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Out of the 25 students in Mrs. Coulter's class, 15 are girls. In the school there are 390 boys. If the ratio of boys to students
GREYUIT [131]

Answer:

975 students

Step-by-step explanation:

This is a dense question. Let's look at it piece by piece:

1. The ratio of boys to students in the class is 10/25. If there are 25 students and 15 girls, that leaves 10 boys.

2. The question says that the ratio is in proportion of boys to total students in the school. "In proportion" in this case means that if we convert 10/25 to a fraction with numerator 390, the denominator is the amount of students in school.

3. 10x39=390. What you do the numerator you must do to the denominator: 25x39=975.

4. This means 975 students go to the school.

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find two numbers that equal 11,000 when added together, but also equal 3,000 when subtracted from each other
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4000 and 7000

Step-by-step explanation:

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Suppose there are some chairs in a room and that each chair has 4 legs.
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y = 4x / x = 1/4 y

Step-by-step explanation:

chairs = x ( to find out how many chairs there are you have to take the legs and divide them by 4 )

Legs = y ( to find out how many legs there are you must multiply the amount of chairs by 4 )

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