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Pre-Calculus
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What does ‘greater than’ mean in math?
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Math
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Find the absolute value of the following numbers: 1. |8| 2. |-9| 3. |-frac{2}{3}| 4. |5.6|
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Math
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A 6-foot person standing 22 feet from a street light casts an 8-foot shadow. What is the height of the street light?
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Math
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Consider the equation: 5x – 2y = 7 1. Write the equation in the form y = mx + b 2. What is the slope? 3. What is the y-intercept?
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Math
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A plane flew due north at 467 mph for 7 hours. A second plane, starting at the same point and at the time, flew southeast at an angle of 147 degrees clockwise from due north at 404 mph for hours. At the end of the 7 hours, how far apart were the two plane
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Pre-Calculus
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The table shows the average monthly cost C of basic cable television from 2000 through 2008, where t represents the year, with t = 0 corresponding to 2000. a) Use the regression feature of a graphing utility to find a linear model for the data. b) Use t
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Math
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A triangle swimming pool measures 45 ft on one side and 32 ft on another side. The two sides form an angle that measures 41.5 degrees. How long is the third side (in feet)?
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Math
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Solve the equation for exact solutions over the interval (0, 2pi). cos x = sin^2 (x/2).
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Math
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Graph the inequality: x greater than or equal to 3.
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Math
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Graph the solution of the set of linear inequalities. y \leq -2x-2\ ygeq x+8
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Pre-Calculus
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How do you do slope intercept form word problems?
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Pre-Calculus
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Biochemical oxygen demand (BOD) measures organic pollutants in water by measuring the amount of oxygen consumed by microorganisms that break down these compounds. BOD is hard to measure accurately. Total organic carbon (TOC) is easy to measure, so it is c
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Pre-Calculus
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Use the given conditions to find an equation in slope-intercept form of the line. If the line is vertical write it in the form x = h. x-intercept = – 9 and y-intercept = 18 Write an equation for the line in slope-intercept form, if possible. If the line i
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Pre-Calculus
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While on vacation in France, Sadie bought a box croissants. Each croissant cost 2.4 euros. Write a function that represent the cost in euros for x croissants. At the time of the purchase, the exchange rate was $1=0.80 euro. Write a function that represent
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Pre-Calculus
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Solve for x in the triangle. Round your answer to the nearest tenth.
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Math
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Rewrite the expression without using the absolute-value symbol. |1 – 2 x^2|
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Pre-Calculus
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A client asks his stockbroker to invest 100,000 for maximum annual income, subject to the three conditions: *1. Spread the investment over no more than three different stocks. *2. Put no more than 40 percent of the money into any one stock. *3. Put a min
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Pre-Calculus
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Write a linear equation to model the situation. You borrow $70 from your brother. To repay the loan, you pay him back $7 per week.
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Math
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Find the value of s in the interval [0, pi / 2] that satisfies the given statement. cos s = 0.8603.
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Math
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What is the domain of y = tan(x)?
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Math
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A scanner antenna is on top of the center of a house. The angle of elevation from a point 28.0 m from the center of the house to the top of the antenna is 27 degrees 10′, and the angle of elevation to the bottom of the antenna is 18 degrees 10′. Find the
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Pre-Calculus
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Find exact values of the six trigonometric functions for the angle -\frac{3pi}{4} by hand. Do not use a calculator. (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
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Math
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What is the slope of the line determined by the coordinates (2, 3) and (-6, -4)?
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Math
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How do you simplify the square root of 6 times square root of 60?
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Math
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Explain how to calculate radicals with roots.
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Pre-Calculus
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Draw the graph of y = 2x – 5.
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Math
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What is 2x – 6y = 6 in slope intercept form?
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Math
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What are the domain and range of f(x) = e^x? What does its graph look like?
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Math
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Find the equations of the lines that pass through the point (0, 4) and are (a) parallel to and (b) perpendicular to the line 5x + 2y = 3.
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Pre-Calculus
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Determine the equation of a line passing through the points (-1, 1) and (1, 7). Write the line in standard form Ax + By = C.
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Pre-Calculus
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How do you evaluate tan^(-1)(4/3) on the scientific calculator?
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Pre-Calculus
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What is sec^2 on the calculator?
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Pre-Calculus
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How do you graph y = 23x – 3?
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Math
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A user is charged $300 monthly for a particular mobile plan, which includes 100 free text messages. Messages in excess of 100 are charged $1 each. Represent the amount a consumer pays each month as a
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Math
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A smart phone is on sale for 25% off its list price. The sale price is $149.25. What expression can be used to represent the list price of the phone?
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Pre-Calculus
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1. Prove the identities. a. t a n ? s i n ? = ? + c o s ? = s e c ? b. 2 t a n x 1 + t a n 2 x = s i n 2 x 2. Sketch the graph of the function y = 1 + s i n 2 x without using a calculator.
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Math
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What is the equation of the line below? (Graph)
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Pre-Calculus
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Simplify the given expression by giving the results in terms of one-half the given angle. Then use a calculator to verify the result.\sqrt{\frac{1 + cos 126^circ}{2}} a) -0.5878\b) 0.891\c) 0.809\d) 0.454
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Math
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Daniel can spend no more than $40 at the fair. If admission into the fair is $10 and the rides cost $1.50 each, write an inequality that represents the greatest number of rides Daniel can go on.
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Pre-Calculus
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How to graph 2x + 5y = 10.
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