1. A researcher wants to look at the effect of time on test scores, believing test scores will change over the semester from the pre-test to the post-test. What are the variables in this specific study? Identify each as an independent or dependent variable. The independent variable and dependent variable is the same in dependent […]

# Algebra

# equations

Algebra equations multiple choice questions: 1.(-8 x ^4 y ^2 z) / -4 x^2 y A. -2x^2z B. 2x^2z C. 2x^2yz D. 2x^3y^2z 2. The graph of the solution to the equation 3x + y=6 is a __________? Solutions of linear equation on graph makes a straight line. A. straight line B. Point C. Circle […]

# Algebra mcq

Algebra multiple choice questions: 1.How much water, in cubic feet, will a cylindrical tank with a radius of 12 feet and a height of 30 feet hold (use 3.14 for pi)? The formula for volume of cylinder is pi r^2 h A. 12,482.8 B. 13564.8 C. 14128.6 D. None of these 2.In the formula V=lwh, […]

# convergent or divergent.

1.Solve the inequality x>log611. Answer x > 2 or x = 2,3,4,….. 2.Determine whether the series (-1/4)+(-1/8)+(-1/16)…is convergent or divergent. Answer: It is convergent 3.Find the 4th term of the expansion of (x-4y)^7. Answer: -2240x^4y^3 12.Use the first five terms of the exponential series of e^x and a calculator to approximate e^2.4 to the nearest […]

# Equations,limits,hyperbola

1.Identify the conic section represented by 3x^2-2y^2-5x+8y=0 a) Circle b) Ellipse c) Hyperbola d) Parabola 2. Simplify the expression 3√(81a^4 b^3) a) 3a^2 b b) 9a^2 b c) 81^1/3 a^4/3 b d) 81^1/3 a^2 b 3.Evaluate the limit, or state that the limit does not exist. N^2-3n+4/n^2-1 a) Limit does not exist b) 1 c) […]

# Body mass index

The formula for body mass index is, I = 700W / H^2 If the weight of Francis is 176 pounds and if his height is 72 inches, then his body mass index is, I = 700(176) / 72^2 = 23.7654….. Therefore, Francis approximate body mass index is 24 (rounded to nearest whole number) To be […]

# probability MCQ

1. Which of the following data organization schemes is useful in showing changes in data relationships over a period of time? a) pie chart b) pictogram c) . bar graph d) line graph e) scatterplot 2. A chi-square test on two categorical variables is called a a) contingency test b) goodness-of-fit test c) test of […]

# linear functions,models in algebra

The total cost per month in dollars is a variable cost of 30 + a fixed cost 40. Therefore, the cost for t number of months is 30 times t plus the same fixed cost of 30. Hence the model for the total cost in dollars C(t) is, C(t) = 30t + 40 The total […]

# Slope,lines and equation.

. f) The base year is taken as 1997, that is x = 1. If x = 4, then the difference (4 – 1) = 3 is to be added to 1997, which means the year of 2000. g) The base year is taken as 1997, that is x = 1. The difference in number […]

# slope and functions

a) The equation is a linear equation relating the cost of the gas filled with the quantity of the gas filled. If one gallon of gas is filled, the cost is $3.03. If it is 2 gallons, then the cost is $ 2 x (3.03) = $6.06. Hence the number 3.03 represents the cost of […]