test math quiz
When a parenthesis is preceded by a minus sign, each phrase changes to a different sign when the parentheses are removed.
If a minus symbol is present outside of parentheses, the terms inside the parentheses will alter when the parenthesis are removed. For instance,
- (2x - 4y) (2x - 4y)
-2x + 4y
Peter buys more C bats after purchasing B bats. Then he hands out D bats. Which of the following algebraic statements accurately expresses Peter's remaining bats?
The formula B + C would be used to calculate Peter's total number of bats if he starts with B bats and then purchases C more bats.
When Peter gives away D bats, the total of B + C would be subtracted from D bats to show how many he still possesses.
The equation is, therefore, B + C - D.
-3ab + 4ac - 2ad = -(3ab - 4ac + 2ad)
-3ab + 4ac - 2ad = -(3ab - 4ac + 2ad)
-3ab + 4ac - 2ad = -3ab + 4ac - 2ad
The height ratio between two structures is 7 to 5. The tallest structure is 210 feet. How high is the second structure?
7/5 = 210/x
7x = 1,050
x = 150
Which of the following is V in the equation V = 2m - 3?
A variable that depends on one or more other variables is referred to as a dependent variable. V is a function of m's value in this equation.
A variable that may have its value determined independently of the values of other variables is known as an independent variable. M is an independent variable in this equation.
Find 3 integers that follow one other such that the sum of the 3rd and the 2nd is greater than 8 in total.
x = 1st number
x + 1 = 2nd number
x + 2 = 3rd number
3x = x + 1 + x + 2 + 8
3x = 2x + 11
x = 11
A given number plus three times that amount equals 40. What number is it?
8 + 3(8) = 32
9 + 3(9) = 36
10 + 3(10) = 40
11 + 3(11) = 44
IF 10 is divided into two parts, the second of which is represented by y.
If 10 is divided into two parts, with y being one of the parts, the second component will be 10 - y.
The age of Helen is N. Which of the following algebraic statements demonstrates Matt's age today if he is twice as old?
The algebraic formula to determine Matt's age would be 2 x N or 2N if Helen is N years old and Matt is 2N years older than Helen.
Which of the following doesn't qualify as a grouping symbol?
Parentheses, brackets, and braces are grouping symbols used in mathematics that can include integers, variables, and operations. As indicated by the grouping sign, perform the operation first. In contrast, an arrow is a notation that implies that both sides of a notation are equal.
What is the value of 6X + 2X - X if X = 5?
If x = 5,
6x + 2x - x =
6(5) + 2(5) - 5 =
30 + 10 - 5 = 35
Which of the following is 3 in B = 3 + 4w?
A constant is a number that stays the same. Three is a constant number that will not change in this equation.
A coefficient is a digit multiplied by a variable. 4 is the coefficient of the independent variable w in this equation.
A father gave his two boys $500. One son received X dollars from him. Which of the following terms accurately depicts how much he gave the other son?
If one son received a sum of X, the other son would have received an amount of $500 - X.