I think the answer would be D.
There is 30 students from each grade so we have 30/120 already then add 12 from 9th grade math and add 10 more from 10th grade math, then add 7 from 12th grade math.
30 + 12 + 10 + 7 = 59
59/120 students.
Answer:
2x+6
10x-20
8x+1
6x-24y
Step-by-step explanation:
so what you do is multiply the number outside of the bracket by the numbers inside while keeping their repective symbol.
Let x be the speed when Fritz is driving
x + 6 will be the train speed
Converting minutes to hrs
48 mins = 48/60 = 4/5 hrs
40 mins = 40/60 = 2/3 hrs
Remember formula distance = rate * time
distance driving = (4/5)x
distance train traveling = (2/3)(x+6)
The train travels the same distance as the car
4/5x = 2/3(x+6)
4/5x = 2/3x + 4
4/5x - 2/3x = 4
basic elementary school math
2/15x = 4
2x = 40
x = 30 miles/hrs is the speed he driving.
distance train traveling = 2/3(30 + 6) = 24 miles
check with the distance he driving
4/5(30) = 24 miles
Answer:
Answer is %15
Step-by-step explanation:
9/60 = 0.15
= >0.15 * 100 = 0.15
Area: 20 x 30 so 600
perimeter: 20 + 20 + 30 + 30 = 100