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Cloud [144]
4 years ago
14

in Mr. Perron's class, 60% of the students are boys. There are 18 boys in the class. What is the total number of students in Mr.

Perron's class?
Mathematics
1 answer:
Korvikt [17]4 years ago
5 0

There are 30 students in Mr. Perron's class


I hope this helps :)

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A bag contains white marbles and yellow marbles, 24 in total. The number of white marbles is 9 less than 2 times the number of y
Zinaida [17]

There are 13 white marbles in the bag.

Step-by-step explanation:

Given,

Total number of marbles = 24

Let,

x represent the number of white marbles.

y represent the number of yellow marbles.

According to given statement;

x+y=24      Eqn 1

x = 2y-9    Eqn 2

Putting value of x from Eqn 2 in Eqn 1

(2y-9)+y=24\\2y-9+y=24\\3y=24+9\\3y=33

Dividing both sides by 3

\frac{3y}{3}=\frac{33}{3}\\y=11

Putting y=11 in Eqn 2

x=2(11)-9\\x=22-9\\x=13

There are 13 white marbles in the bag.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/9621364
  • brainly.com/question/9539036

#LearnwithBrainly

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marta [7]

Answer:

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Step-by-step explanation:

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3 years ago
What equals 62? and what factors equal 62
nexus9112 [7]
The only factors that equal 62 are

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Hope this helps!
3 0
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I need the formula not the answer thanks<br><br>x^{2} [/tex]&gt;49
sladkih [1.3K]
X²>49
well, I don't know a formula but this is how I would solve it
I first solve x²=49 to obtain x=+/-7

so then would it be x>+/-7?
if we try 8 it works
if we try -9 it works

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What is the answer for 2x=7
Wittaler [7]

Answer:

x=3.5

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