Simplify the expression: 42 + 8 ÷ 2.
The expression 42 + 8 ÷ 2 can be simplified as follows:
42 + 8 ÷ 2 = 42 + 4
Now, we perform the addition:
42 + 4 = 46
Therefore, the simplified expression is 46.
Simplify the expression: 4^2 + 8 ÷ 2.
The expression 4^2 + 8 ÷ 2 can be simplified as follows:
4^2 + 8 ÷ 2 = 16 + 8 ÷ 2
Now, we perform the division:
8 ÷ 2 = 4
So the expression becomes:
16 + 4
Now, we perform the addition:
16 + 4 = 20
Therefore, the simplified expression is 20.
square root of 25
The square root of 25 is 5.
square root of 0.81
The square root of 0.81 is 0.9.
Name the subset(s) of real numbers to which the number zero belongs
The number zero belongs to the subset of real numbers known as the set of whole numbers, which includes all the positive integers (1, 2, 3, ...) as well as zero and the negative integers (-1, -2, -3, ...). Zero also belongs to the subset of real numbers known as the set of rational numbers, as it can be expressed as the fraction 0/1.
Your teacher will grade your response to ensure that you receive proper credit for your answer.
The cost of a telephone call is $0.75 + $0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes.