<span>After you solve a system of linear equations, you will get an ordered pair (x,y). Replace x with whatever number you obtained for x, and replace y with whatever number you obtained for y. If both your equations are true upon simplifying, you know it is correct.</span>
Answer:
range is y-coordinates so it should be 40
Step-by-step explanation:
domain is x-coordinates
1) cross multiply both sides.
3x^2-24= 2x^2+10
x^2-10x-24=0
x^2-12x+2x-24=0
x(x-12)+2(x-12)=0
(x-12) (x+2)=0
Bring -12 and 2 to the other side. Therefore the value of x are 12 and -2.
Answer:
127.5
Step-by-step explanation:
The given series is 26 + 24.5 + 23 + 21.5 + ... - 17.5
The first term of this series is a=26
The common difference is d=24.5-26=-1.5
The last term of the series is -17.5
The nth term is given by:
n=30
The sum of the series:
Answer:
x > or equal to 9.7
Step-by-step explanation:
Don't let the inequality intimidate you. Treat the > or equal sign like it is an equal sign.
Any thing you do on the right you must do on the left.
move 3 to other side
combine like terms
15x > or equal to 145.5
Divide both sides by 15
x > or equal to 9.7
