Answer:
substituting x=5y into 2x-3y=7, Answer: y = 1 x = 5
Step-by-step explanation:
2(5y)-3y=7
10y-3y=7
7y=7
y=1
substitute y=1 into x=5y
x=5(1)
x=5
Based on the given fractions above which are 7/8 and 42/4, in order for us to know if they are both proportional is to do the cross multiplication. Let's say, we multiply 4 by 7 and we get 28. Divide 28 by 8 and the result is 3.5 and not 42. Therefore, we can say that these fractions are NOT proportional. Hope this helps.
Answer:
10
Step-by-step explanation:
We'll note the numbers as 
A quarter is 0.25 dollars so the ratio between 1 dollar and a quarter is 1/0.25(it means the dollar and the quarter which is 0.25 dollars) and that equals = 4 so the order of magnitude will be 4x10(exponent 1)
Answer:
1) (0,0)
2)(-2,1)
3)(-4,5)
4)(-1,7)
5)(2,2)
6)(2,-4)
Step-by-step explanation:
Please mark as brain list.
