All of them except 8/100 because it results 0.08 or 8%.
The rest:
2/5 = 0.4 = 40%
8/20 = 0.4 = 40%
4/10 = 0.4 = 40%
16/40 = 0.4 = 40%
P1=2x+2y=30
after modify them
P2=2*3x+2*4y=102
6x+8y=102
2x+2y=30 / * (-3)
-6x-6y= -90
6x+8y=102
we must add the 2 expressions
/ 8y-6y=102-90
2y=12
y=12:2
y=6
2*x+2*y=30
2x+2*6=30
2x+12=30
2x=30-12
2x=18
x=18:2
x=9
O B. -x2 + 4x + 6
O c. 4x2 - 19
O D. - x2 + 4x - 4
Answer:
I think it's going to be D
Step-by-step explanation:
4x+1=2x-5
-4x-1 -4x-1
-2x=-4
÷2
x=-2
A: 42
B: 61.2
C: 80.5
D: 118.9
Use 3.14 for pie
A.248.5 yard
B.490.5 yard
C.725.5 yard
D.745.5 yard
Answer:
Step-by-step explanation:
d= 25 yards ; r = 25/2 = 12.5 yards
circumference of two semicircle = circumference of circle
= 2πr = 2*3.14*12.5 = 78.5 yards
Perimeter of school truck = 78.5 + 85 + 85 = 248.5 yards
Distance traveled by Jasmine = 3* 248.5 = 745.5 yards