MATHEMATICS MIDDLE SCHOOL

What's the GCF of 30,48,60

Answers

Answer 1
Answer: The greatest common factor (GCF) of 30, 48, and 60 is: 6

Factors for 30: 1, 2, 3, 5, 6, 10, 15, 30
Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24
Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30

The common factors between them are 1, 2, 3, and 6, but 6 is the greatest.

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What is the equation of a line that passes through the point (8,1) and is perpendicular to the line whose equation is y= -2/3 x + 5? A) 2X+3Y= 15
B) Y= -2/3x + 11
C) Y= 3/2x+ 11
D) y= 3/2x - 11

I am thinking its B but am not sure. I don't wanna retake this so I wanna be 100%. Thanks!!

Answers

Answer:

The equation of this line would be y = 3/2x - 11, which is the answer D.

Step-by-step explanation:

In order to find this equation we must first find the slope of the original line. The original slope (the coefficient of x) is -2/3, which means the new slope will also be 3/2 because perpendicular lines have opposite and reciprocal slopes. Now, we can use this slope along with the point in point-slope form to find the equation of the line.

y - y1 = m(x - x1)

y - 1 = 3/2(x - 8)

y - 1 = 3/2x - 12

y = 3/2x - 11

Give me a estimate of 79% of 13 with compatibitle numbers​

Answers

Answer: 10.27

That is your answer. If you need it explained ask how do you solve it.

What is tge area of wall space that is not covered by chalkboard paint

Answers

There's no diagram, but if you figure out the total area and then subtract the area covered by the paint, you'll get your answer.

Savannah was paid $87 for 12 hours of babysitting and $65.25 for 9 hours. What is the constant of proportionality that describes this relationship? A) 0.14 Eliminate B) 7.25 C) 12.5 D) 65

Answers

answer is B) 7.25 

$87 / 12 = $7.25 per hour 

$65.25  / 9 = $ 7.25 per hour  

Solve for a.

5a - 2 = 23
a = ?

Answers

5a - 2 = 23.

First, take 5a - 2 = 23 and add 2 to each side

5a - 2 = 23
     +2    +2
5a = 25

now, divide each side by 5

5a = 25
/5      /5

a = 5

Answer:

a=5

Step-by-step explanation:

Jamar earned $2,500 from his summer job. This is 350 more than twice what his friend Todd earned. Please write the equation for this problem.

Answers

2500 = 2x + 350
2500 - 350 = 2x
2150 = 2x
2150/2 = 2x/2
1025 = x
x = $ Todd had earned
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