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study help
mathematics
precalculus
Questions and Answers of
Precalculus
Write an inequality using an absolute value to describe each statement.x is more than 5 units from 2.
Write an inequality using an absolute value to describe each statement.x is at least 6 units from 4.
At the beginning of the month, Mike had a balance of $210 in his checking account. During the next month, he deposited $80, wrote a check for $120, made another deposit of $25, and wrote two checks:
The weekly production cost C of manufacturing x watches is given by the formula C = 4000 + 2x where the variable C is in dollars. (a) What is the cost of producing 1000 watches? (b) What is
Express each statement as an equation involving the indicated variables.The surface area S of a cube is 6 times the square of the length x of a side.
Express each statement as an equation involving the indicated variables.The volume V of a cube is the cube of the length x of a side. х
Express each statement as an equation involving the indicated variables.The surface area S of a sphere is 4 times π times the square of the radius p r.
Express each statement as an equation involving the indicated variables.The volume V of a sphere is 4/3 times π times the cube of the radius r.
Express each statement as an equation involving the indicated variables.The perimeter P of an equilateral triangle is 3 times the length x of one side.
Express each statement as an equation involving the indicated variables.The area A of an equilateral triangle √3/4 is times the square of the length x of one side. х х
Express each statement as an equation involving the indicated variables.The area A of a triangle is one-half the product of its base b and its height h. h b
Express each statement as an equation involving the indicated variables.The circumference C of a circle is the product of π and its diameter d. C
Express each statement as an equation involving the indicated variables.The perimeter P of a rectangle is twice the sum of its length l and its width w.
Express each statement as an equation involving the indicated variables.The area A of a rectangle is the product of its length l and its width w. A W
Use a calculator to evaluate the expression. Round your answer to three decimal places. -(8.11)-4
Use a calculator to evaluate the expression. Round your answer to three decimal places. (-8.11)-4
Use a calculator to evaluate the expression. Round your answer to three decimal places. -(2.8)6
Use a calculator to evaluate the expression. Round your answer to three decimal places. (-2.8)6
Use a calculator to evaluate the expression. Round your answer to three decimal places. (2.2)-5
Use a calculator to evaluate the expression. Round your answer to three decimal places. (6.1)-3
Use a calculator to evaluate the expression. Round your answer to three decimal places. (3.7)5
Use a calculator to evaluate the expression. Round your answer to three decimal places. (8.2)6
What is the value of (0.1)3(20)3?
What is the value of (666)* (222)*
Find the value of the expression 4x3 + 3x2 – x + 2 if x = 1. What is the value if x = 2?
Find the value of the expression 2x3 – 3x2 +5x – 4 if x = 2. What is the value if x = 1?
Find the value of each expression if x = 2 and y = -1. yx
Find the value of each expression if x = 2 and y = -1. xy
Find the value of each expression if x = 2 and y = -1. V + Vy
Find the value of each expression if x = 2 and y = -1. x² + y²
Find the value of each expression if x = 2 and y = -1. (√x)2
Find the value of each expression if x = 2 and y = -1. √x2
Find the value of each expression if x = 2 and y = -1. (x + y)2
Find the value of each expression if x = 2 and y = -1. (xy)2
Find the value of each expression if x = 2 and y = -1. x2y2
Find the value of each expression if x = 2 and y = -1. x2 + y2
Find the value of each expression if x = 2 and y = -1. -3x-1y
Find the value of each expression if x = 2 and y = -1. 2xy-1
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0. -3 -2 5х бу ?
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0. -2 Зx 4y1,
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0. 4х ?(уг)-1 23x*y
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0. (-2)²x*(yz)² 3-ху'z
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0. x²y³ 4 ху
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x-1y)3
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x2y-1)2
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(-4x2)-1
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(8x3)2
Simplify the expression. √(-3)2
Simplify the expression. √(-4)2
Simplify the expression. √36
Simplify the expression. √25
Simplify the expression. (2-1)-3
Simplify the expression. (2-1)-3
Simplify the expression. 4-2.43
Simplify the expression. 3-6.34
Simplify the expression. -4-2
Simplify the expression. 4-2
Simplify the expression. -42
Simplify the expression. (-4)2
Use the formula C = 5/9(F - 32) for converting degrees Fahrenheit into degrees Celsius to find the Celsius measure of each Fahrenheit temperature. F = -4°
Use the formula C = 5/9(F - 32) for converting degrees Fahrenheit into degrees Celsius to find the Celsius measure of each Fahrenheit temperature. F = 77°
Use the formula C = 5/9(F - 32) for converting degrees Fahrenheit into degrees Celsius to find the Celsius measure of each Fahrenheit temperature. F = 212°
Use the formula C = 5/9(F - 32) for converting degrees Fahrenheit into degrees Celsius to find the Celsius measure of each Fahrenheit temperature. F = 32°
Determine the domain of the variable x in each expression. х — 2 х — 6
Determine the domain of the variable x in each expression. x + 4
Determine the domain of the variable x in each expression. x + 4 9-
Determine the domain of the variable x in each expression. 4 х — 5
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 -9x – x + 1 x³ + x
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 x? + 5x – 10 x3 - x
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 x - 1
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 x? + 1
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 х x? + 9
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 х .2 – 9
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 x? + 1
Determine which of the value(s) (a) through (d), if any, must be excluded from the domain of the variable in the expression: (a) x = 3(b) x = 1(c) x = 0(d) x = -1 x - 1
Find the value of each expression if x = 3 and y = -2. 3|x| + 2|y|
Find the value of each expression if x = 3 and y = -2. ||4x | - |5y||
Find the value of each expression if x = 3 and y = -2. |3x + 2y|
Find the value of each expression if x = 3 and y = -2. |4x - 5y|
Find the value of each expression if x = 3 and y = -2. |y|/y
Find the value of each expression if x = 3 and y = -2. |x|/x
Find the value of each expression if x = 3 and y = -2. |x| - |y|
Find the value of each expression if x = 3 and y = -2. |x|+ |y|
Find the value of each expression if x = 3 and y = -2. |x - y|
Find the value of the expression if x = 3 and y = -2. |x + y|
Evaluate the expression if x = -2 and y = 2. 2x – 3
Evaluate the expression if x = -2 and y = 2. 3x + 2y 2 + y
Evaluate the expression if x = -2 and y = 2. х +у х — у У
Evaluate the expression if x = -2 and y = 2. 2х х — у
Evaluate each expression if x = -2 and y = 2. -2x + xy
Evaluate each expression if x = -2 and y = 2. 5xy + 2
Evaluate each expression if x = -2 and y = 2. 3x + y
Evaluate each expression if x = -2 and y = 2. x + 2y
Use the given real number line to compute each distance. d(D, B) -4 -3 -2 -1 0 1 2 3 4 5 6
Use the given real number line to compute each distance. d(A, E) -4 -3 -2 -1 0 1 2 3 4 5 6
Use the given real number line to compute each distance. d(D, E) -4 -3 -2 -1 0 1 2 3 4 5 6
Use the given real number line to compute each distance. d(C, A) -4 -3 -2 -1 0 1 2 3 4 5 6
Use the given real number line to compute each distance. d(C, D) -4 -3 -2 -1 0 1 2 3 4 5 6
Graph the numbers x on the real number line. x ≤ 7
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