A sack contains red, blue, and yellow marbles. The ratio of red marbles to blue marbles to yellow marbles is 3:4:8. If there are 24 yellow marbles in the sack, how many total marbles are in the sack?
Answer(s): A
The number of yellow marbles, 24, is times larger than the number of marbles given in the ratio. Multiply each number in the ratio by 3 to find the number of each color of marbles. There are 3(3) = 9 red marbles and 4(3) = 12 blue marbles. The total number of marbles in the sack is 24 + 9 + 12 = 45.
What two values are not in the domain of
The equation is undefined when its denominator, x2 9x 36, evaluates tozero. The x values that make the denominator evaluate to zero are not in the domain of the equation.Factorx2 9x -36and set the factors equal to zero:
The diagonal of one face of a cube measures 42in. What is the volume of the cube?
Answer(s): B
Every face of a cube is a square. The diagonal of a square is equal toS2where s is the length of a side of the square. IfS2 = 42then one side, or edge, of the cube is equal to 4 in. The volume of a cube is equal toe3, whereis the length of an edge of the cube. The volume of the cube is equal to(4 in)3= 64 in3.
A line has a y-intercept of 6 and an x-intercept of 9.Which of the following is a point on the line?
A line with a y-intercept of 6 passes through the point (0, 6) and a line with an x-intercept of 9 passes through the point (9, 0). The slope of a line is equal to the change in y values between two points on the line divided by the change in the x values of those points. The slope of this line is equal to
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hossam Commented on March 01, 2018 Good exam material. Test Engine and the Android App are very helpful to practice. UNITED STATES
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