Answer:
Ratio of boys to girls,
=> 5:4
If there are 60 girls, then the number of boys
= 5 * 15 : 4 * 15
=> 75 : 60
Therefore, there were 75 boys in the choir
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The numbers should be 2, 2, 5, 9 and 12.
<h3>What is mean, mode and median?</h3>
The arithmetic mean is found by adding the numbers and dividing the sum by the number of numbers in the list.
The median is the middle value in a list ordered from smallest to largest. The mode is the most frequently occurring value on the list.
Let us take numbers 2, 2, 5, 9 and 12.
mean = 30/5
mean= 6
range = 10.
Learn more about mean, mode and median here:
brainly.com/question/15323584
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Step-by-step explanation:
1.
Subtract the coefficient from both sides, keep 55 on the same side.
Complete the square by dividing the coefficient by two and squaring it.
Use binomial to factor the left side.
2. Solve for x.
Remeber the square root of 64 is also -8 so
So the solutions are -5 and 11
Answer:
SteIDKIp-by-step explanation: