There are 60 students in a classroom, 50% of the students are

Mathematics

1 answer:

vivado [14]2 years ago

6 0

Answer:

Step-by-step explanation:

If 50% of students are boys that means there are 30 boys and 30 girls. Then if 30% of boys are 10 and 60% of girls are 18. You add 18+10 and that gives you 28.

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4. The system of equations 3x – 6y = 20 and 2x – 4y = 3 is

expeople1 [14]

3x - 6y = 20
-6y = -3x + 20
y = 1/2x - 20/6.....slope = 1/2...y int = -20/6 = -10/3

2x - 4y = 3
-4y = -2x + 3
y = 1/2x - 3/4..slope = 1/2...y int = -3/4

same slope, different y int = parallel lines = no solution = inconsistent

6 0

3 years ago

Read 2 more answers

What does X equal in the equation 8(4-x) =7x +2

drek231 [11]

Answer:

x = 2

Step-by-step explanation:

Given

8(4 - x) = 7x + 2 ← distribute parenthesis on left side

32 - 8x = 7x + 2 ( subtract 7x from both sides )

32 - 15x = 2 ( subtract 32 from both sides )