This is because of the order of operations:
Parentheses
Exponent
Divide
Multiply
Add
Subtract
Note that parentheses are the first, so it will affect everything after it.
Examples:
2(5+4)= 2x9= 18
(2x5)+4= 10+4= 14
5/(2+3)= 5/5= 1
(5/2)+3= 2.5+3= 5.5
Answer:
The Cardboard dimensions are 13cm in length and 12cm in breadth
Step-by-step explanation:
We can use Pythagoras Theorem to find the length the Cardboard (a²+b²=c²). Let A be 5 and B be 12, we find that C is equivalent to 13. The height is 12, thus the breadth of the Cardboard is also 12. Hope this helps :)
For question 9 the answer is option D.63cm
Which would get rounded up to 63cm^2
Answer: y = -x + 7
Step-by-step explanation:
The slope is 
, so we know the equation is of the form 
.
Substituting in the coordinates (1,6) to find b,
Thus, the equation is y = -x + 7
