Standard form is just putting (in this case) variables in alphabetical order. First we simplify- 2x+4=4y would become 1/2x+1=y. This is already in standard form, as numbers w/o variables come at the end. simplifying the next one is more tricky. first you get a variable/number alone-
9-2x-2y=4x+3
9-2y=6x+3
6-2y=6x
1-1/3y=x
1=x+1/3y
3=x+y
x+y=3
sorry if I was wrong and not of any help, But I do believe this is correct.
The figure is a trapeziod
both pairs are parallel
AB slope is 4/3
BC slope is -2/7
AD slope is -2/7
(and I don't know about CD)
(4,-<span>∞) since you have to isolate the x first which would give you this inequality: x<4. This means that any number less than 4 can be the solution.
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Just multiply 42 by 10 and that gives you 420 , so the real car has a length of 420cm or 4.2 metres :)
Answer:
8x+13
Step-by-step explanation:
You distribute the 3 into the parenthesis to get 6x+3, and you do the same for the 2 to get 2x+10. Now you have the expression 6x+3+2x+10, and once you simplify you get 8x+13
