Answer:
2m-4
Step-by-step explanation:
because she has double his amount (2*m) but $4 less therefore 2m-4
The time taken by the acorn to fall 1.16 seconds
Answer:
135
Step-by-step explanation:
Let the unknown number be
.
Then the opposite of this unknown number will be
.
It is given to us in the question that when this unknown number,
is increased by 9, or in other words when 9 is added to this unknown number,
, then this becomes 5 times it's opposite, which is
.
Thus, from the given condition in the question, the equation we get is as:

We will solve this by isolating
as:



Thus the required number is -1.5