Answer:
First estimate:
63% is kind of close to 60%
41 is kind of close to 40
its easy to compute 60% of 40 - it's 24
Second estimate:
14% is close to 15%
96 is close to 100
15% of 100 = 15
Answer:
x = 245
Step-by-step explanation:
The sum of integers x and y is 280; x + y = 280
If x is divided by 7, the quotient is y; x/7 = y so x = 7y
Now you have 2 equations:
x + y = 280
x = 7y
Substitute x = 7y into x + y = 280
7y + y = 280
8y = 280
y = 35
x = 7(35)
x = 245
Answer
x = 245
For this case we must evaluate the following expression:
14 + (- 8) ÷ 2 * -3
According to the method of algebraic resolution, called PEMDAS, the divisions and multiplications must be made from left to right, before the addition and subtraction, then:
14 + (- 4) * - 3 =
We eliminate the parenthesis keeping in mind that 

Equal signs are added and the same sign is placed:

Answer:
26
Percentage = (1352/40929) x 100%
percentage = 0.03303281292 x 100%
percentage = 3.30%