3 years ago

four fifths of senior class went to prom. if 324 seniors went to prom, how many are there in the senior class

2 answers:

7 0

Answer:

The answer to your question is 405, because look divide 324 by 4 becasue thats how many fifths are being used then multiply the answer which is 81 by 405

Step-by-step explanation:

dezoksy [38]3 years ago

4 0

Answer:

405 students are in the class.

Step-by-step explanation:

324/4= 1/5 of the class= 81

81*5= whole class=405

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X = 3y - 6 2x - 4y = 8 Solve the system of equations using substitution.

Brut [27]

Hello

x = 3y - 6
2x - 4y = 8
We need to start by solving 3y - 6 for x
Substitute 3y -6 for x in 2x
2x - 4y = 8
2(3y - 6) - 4y = 8
2y - 12 = 8
2y = 8 + 12
2y = 20
Divide both sides by 2
2y/2 = 20/2
y = 10

Now, substitute 10 for y in x= 3y
x = 3y - 6
x = 3(10) - 6
x = 30 - 6
x= 24

Answer : x = 24 and y=10

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