Answer:An expression is one or more terms in an algebraic phrase. An expression does not contain the = sign because it is a phrase. Some examples of algebraic expressions are 2x, 5x + 3, 8m - 5m + 10
Evaluate an Algebraic Expression
To evaluate an algebraic expressiontext annotation indicator for x = 3, means to replace the variable x with the number 3 and then simplify by following order of operations.
Example:
Evaluate the following expression for x = 3.
3 xtext annotation indicator + 5
3(3) + 5text annotation indicator
= 9 + 5
= 14
Write an Algebraic Expression
To write an algebraic expression, look for key words that tell you what operation (add, subtract, multiply, or divide) to use.
Example:
Write an algebraic expression for: The product of x and 5 .
The key word here is product . You may recall that a product is the answer obtained when you multiply. That means we want to multiply x and 5, so we write the expression as 5 x . It should be written the standard way by putting the coefficient in front of the variable.
Step-by-step explanation:
Just count the units and that should give you 7 units.
The following is the most appropriate method for investigating the sociologist’s belief is,
A. A one-sample zz-test for a difference in population proportions
Step-by-step explanation:
- The young adults in a county get their news from online sources are 75 percent.
- But according to sociologist the percentage is actually greater than 75 percent.
- The correct answer is A one-sample zz-test for a difference in population proportions.
- The One proportion Z-test is used to compare proportion which is observed to a theoretical one, only when there are only two categories.
- A z-test is a statistical test which is used to determine whether there are two population which means there are different when the variances are known and the sample size is relatively large.
Answer:
scilian right how ithelps
Step-by-step explanation:
