Answer:
The area increased by a factor of 4
Step-by-step explanation:
If the scale factor is 4 and only the height changes
A = 1/2 bh
A = 1/2 b(4h)
A = 1/2 bh(4)
A = A4
The new area is the old area increased by 4
Answer:
21 students were in the class.
Step-by-step explanation:
The information in the question tells you that 4/7 of the class is girls.
That means that the remainder of the class is 1 - 4/7 = 3/7 boys
Let the total in the class = x
(3/7)x = 9 Multiply by 7
(3/7)*7*x = 9 * 7 Simplify the right and left
3x = 63 Divide by 3
3x/3 = 63/3
x = 21
There were 21 students in the class.
Answer:
0.0022369362920544 mile
Step-by-step explanation:
Convert 3.6 Meters to Miles (m to mile) with our conversion calculator and conversion tables. To convert 3.6 m to mile use direct conversion formula below.
3.6 m = 0.0022369362920544 mile.
You also can convert 3.6 Meters to other Length (popular) units.
Please give me Brainliest
Answer:
x= 4/5
y= 2/5
Step-by-step explanation:
3x-y=2
2x+y=5
solve them so that they are in y=mx+b form
3x-y-3x=2-3x
-y= -3x+2
y= 3x -2
2x+y -2x= 2-2x
y= -2x+2
now use the substitution method to get your points
3x -2= -2x+2
3x -2+2= -2x+2+2
3x= -2x+4
3x+2x= -2x+4+2x
5x=4
x= 4/5
now substitute x into any of the 2 equations
y= 3x -2
y= 3(4/5) -2
y= 2 2/5 -2
y= 2/5
Hope this helped!
