Answer:
Step-by-step explanation:
utilise the Foil method to expand brackets:
F - mulply the first terms (x and x)
O - multiply the outside terms ( x and -2)
I - multiply the inside terms (5 and x)
L - multiply the last terms (5 and -2)
Then add them as following:
Then combine like terms:
Let the marks of Devi be x and Ali be y.
So, the equations:
2y = x <em>and</em> y + 16 = x
So,
2y = y + 16. [ because we know equals are equal to equals]
=> 2y - y = 16
=> y = 16
Check
Ali's marks are half of Devi's marks.
Devi's marks are 16 more than alis.
So, Devi's marks will be 16×2 = 32 and 32 is 16 greater than 16 (16+16=32).
Answer: The solution is (4, -4)
Answer:
DIVIDING 9 AND 5 = 23.8
9/5 FRACTION = 0.04
Step-by-step explanation:
If 9/5 means 9 divided by 5
FLIP THE EQUATION
9/5C + 32 = 75
9/5C + 32 - 32 = 75 -32
9/5C = 43
9/5 = 1.8
1.8C = 43
1.8C/1.8 = 4
If 9/5 means 9/5ths fraction
FLIP THE EQUATION
9/5C + 32 = 75
9/5C + 32 - 32 = 75 -32
9/5C = 43
9/5C / 9/5 = 43 / 9/5
C = 0.04
Hope this helps i thought 9/5 was 9 divide by 5. If it was 9/5 as a fraction i also made that equation too.
