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2 years ago

There are 75 students performing in the holiday concert. Of the students, 30 are boys. What percent of the students are boys?

Mathematics

1 answer:

viva [34]2 years ago

8 0

Answer:

Total students = 75

Boys = 30

<h3>Percentage</h3>

$\sf \frac{30}{75} \times 100\% \\ \sf= \frac{10}{25} \times 100\% \\ \sf = \boxed{ \bold{ \red{40\%}}}$

Hope it helps!

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Is (-a + b)² = a² - 2ab + b² right or wrong, and why?

antiseptic1488 [7]

Answer:

$\huge\boxed{\sf Right.}$

Step-by-step explanation:

$(-a+b)^2$

Let's apply the formula (x+y)² = x² + 2xy + y²

Here, x = -a and y = b

So,

= (-a)² + 2(-a)(b) + (b)²

= a² - 2ab + b²

Hence, it has been proved that (-a + b)² = a² - 2ab + b².

$\rule[225]{225}{2}$

Hope this helped!

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2 years ago

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GaryK [48]

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3 years ago

What is the distance from (-4, -7) to (4, 8) ?

Mila [183]

Answer:

Step-by-step explanation:

We can use this formula:

$\sqrt{(x2-x1)^2 + (y2 -y1)^2}$ where x and y indicate the coordinates of the two points

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2 years ago

Read 2 more answers

On Monday, Rachel bought 13 yards of fabric in order to make face masks. Later that day, she purchased another 6 3/4 yards. On W

Vladimir [108]

Answer:

14.65

Step-by-step explanation:

You add 13 + 6 3/4 then subtract 5 1/10 from that and you have your answer.

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3 years ago

I need the equation and the answer please it’s due tonight

Greeley [361]

Answer:

The answer is 27.15

this is your equation to your answer step by step

4.40+ 3.25=

7.65

7.65+3.25=10.9

10.9+3.25=14.15

14.5+3.25=17.4

17.4+3.25=20.65

20.65+3.25=23.9

23.9+3.25=

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2 years ago