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LenKa [72]
3 years ago
13

In a school 40% are boys and 900 are girls. find the total number of students of the school and the number of boys

Mathematics
1 answer:
My name is Ann [436]3 years ago
6 0

Answer:

1500 students

600 boys

Step-by-step explanation:

40% are boys, so 60% are girls.

Writing a proportion:

900 / 60% = x / 100%

x = 1500

There are 1500 students in the school, which means there are 600 boys in the school.

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The graph of a quadratic function has roots at -3 and -7 and a vertex at (-5, 4). What is the equation of the function in vertex
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Answer:

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Step-by-step explanation:

The roots are -3 and -7, so:

y = a (x + 3) (x + 7)

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y = a (x² + 10x + 25) − 4a

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The vertex is (-5, 4), so a = -1.

y = -(x + 5)² + 4

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MrRissso [65]
The answer is
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Step-by-step explanation:

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