Write 900 million in scientific notation.

9 × 10^8

Step-by-step explanation:

Scientific notation is a when numbers that are too big or small are expressed in a convenient manner by writing them in decimal form.

Scientific notation is usually used by mathematicians, and engineers, to simplify arithmetic operations. It I written as : a × 10^n i.e a times 10 raise to the power of n.

900 million= 900,000,000

Note that a = 9 and n= 8

900 million= 900000000 = 9×10^8.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

answer: yes i agree that you should not put it on/p>

step-by-step explanation: the reason for this is that it wastes other peoples time and also make them fail as well and that is never good.