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miss Akunina [59]
3 years ago
9

in a class, 60% of the students are girls. there are 19 girls in the class. how many students are there? how many boys are there

Mathematics
1 answer:
Slav-nsk [51]3 years ago
4 0
60/40 =19/? 19 ×40÷60=13 there is 13 boys
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A baker buys 10 pounds of peaches. She buys a total of 25 peaches. Given that 1 lb = 16 oz, what is the average weight, in ounce
creativ13 [48]

Answer:

the average weight  of one peach is 6.4 ounces

Step-by-step explanation:

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3 years ago
Please help me with 3.2 ​
Lady_Fox [76]

The measure of the angle ∠PQR is 90 degrees

<h3>How to prove that ∠PQR is 90 degrees?</h3>

The equation of the line PQ is given as:

3x - y - 2 = 0

The coordinates of the QR are given as:

(0, -2) and (6, -4)

Make y the subject in 3x - y - 2 = 0

y = 3x - 2

The slope of the above line is

m1 = 3

Next, we calculate the slope (m2) of points Q and R.

So, we have:

m2 = (y2- y1)/(x2 - x1)

This gives

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Evaluate

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The slopes of perpendicular lines are opposite reciprocals.

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This means the lines PQ and QR are perpendicular lines.

The angle at the point of perpendicularity is 90 degrees

Hence, the measure of the angle ∠PQR is 90 degrees

Read more about linear equations at:

brainly.com/question/15602982

#SPJ1

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Marysya12 [62]
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