Answer:
Here the given subtraction problem,
55 - 23
For finding the answer with help of the number line we will follow the following steps,
Step 1 : First find the number 55 on the number line.
Step 2: Count the position of 55 from 0 of the number line,
Step 3: Now count back from 55 to 23,
We will get 32.
Thus, 55 - 23 = 32.
Answer:
The answer closest is answer D) 62.13
Step-by-step explanation:
I think u multiply them.
Answer:
It decreased by 25%
Step-by-step explanation:
8 x .25=2
8 - 2 = 6
Answer:
the percent of increase is 24%
Step-by-step explanation:
The percent of increase in general could be calculate as:

where Vf is final value and Vi is initial value.
From the question we know that Vi is equal to 25 and Vf is equal to 31. Replacing this values on the equation we get:

That's mean that at second attempt the percent of increase is 24%, taking into account that at the first attempt a student get 25 questions correct.