1+1^22+9^1=? Please help!
2 answers:
1 + +
= ?
So solving math problems, always use PEMDAS
PEMDAS is the Order of Operations
It stands for Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction.
An easy way to remember PEMDAS is Please Excuse My Dear Aunt Sally
So, in this problem, since there are no Parenthesis (), you got to Exponents.
is equal to 1 because all you do is multiply 1 by itself 22 times
is equal to 9 because all you do is multiply 9 by 1, in other words, you dont do anything to it
So, 1 + 1 + 9 = 11
Your answer is 11
Hope this helps
-GoldenWolfX
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Answer:
41 years old.
Step-by-step explanation:
Let x represent age of younger child.
We have been given that a mother has two children whose ages differ by 5 years. So the age of older child would be .
The sum of the squares of their ages is 97. We can represent this information in an equation as:
Let us solve for x.
Divide both sides by 2:
Since age cannot be negative, therefore, age of younger child is 4 years.
Age of older child would be
Therefore, the age of older child would be 9 years.
We have been given that the square of the mother's age can be found by writing the squares of the children's ages one after the other as a four-digit number.
Square of 4:
Square of 9: .
Square of mother's age:
To find mother's age, we need to take positive square root of 1681 as:
Therefore, the mother is 41 years old.