Okay uh
x = 2y + 9
14x + 2y = - 54
14x + 2y = - 54
14(2y + 9) + 2y = - 54
28y + 126 + 2y = -54
30y + 126 = -54
- 126 -126
30y = -180
30y/30 = -180/30
y = -6
x = 2y + 9
x = 2(-6) + 9
x = -12 + 9
x = -3
(x, y) = (-3, -6)
Step-by-step explanation:
30% = 3/10
number of sixth grade students = 3/10 × 620
divide by denominator
620 ÷ 10 = 62
multiply by numerator
62 × 3 = 186
Therefore there are 186 sixth grade students
Answer:
1
Step-by-step explanation:
m=(y-y1)/(x-x1)
Points are (5,2) and (4,1)
m= (2-1)/(5-4)= 1/1= 1
m=1 to replace ? mark
The sum of money that was shared between the three friends is $8100
The ratio at which the money was shared = 7 : 9 : 11
Total ratio = 7 + 9 + 11
Total ratio = 27
Amount received by Kerry-Ann = $3300
Let the total amount shared by the three friends be T
Amount received by Kerry-Ann = (11/27) x T
3300 = 11T / 27
11T = 27(3300)
11T = 89100
T = 89100/11
T = 8100
The sum of money that was shared between the three friends is $8100
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