3(x+2)+11>20
minus 11 both sides
3(x+2)>9
divide both sides by 3
x+2>3
minus 2 both sides
x>1
45machines:20mins
20mins=1/3hour
45machines:1/3hour
times 3
135machins=1hour
135machines per hour
B. 30 in 15
15=1/4 hour
30=1/4hour
times 4
120machines per hour
both produce for 2 hours
A. is 135*number of hours, B is 120 times number of hours
135*2+120*2=
270+240=
510
make 510 machines in 2 hours
A / b = c
a is dividend
b is divisor
c is quotient
c = b then
a / b = b
a = b^2 or
divisor squared
divisor ^ 2
Answer:
2,4,5
Step-by-step explanation:
The straight line has representation:
y=kx+n, where k and n are real numbers. We dont have ^2 or any other operation.
So:
1. Is not line because yx=9x-1
2. X=16+3y we can write like y=1/3X-16/3 so it is straight line TRUE
3. Ve have ^2 it is not staight line
4.8x-5y=30 is y=8/5x-6 it is line TRUE
5.y=-6(x+10)=-6x-60 it is line TRUE
6. Y=x(3-x)+1=3x-x^2+1 so we have ^2 it is not straight line.
