SAT Math

Line L passes through the points (-2,0) and (0,a). Line LL passes through the points (4,0) and (6,2). What value of a makes the two lines parallel? A) 1/2 B) -2 C) 2 D) -1/2 E) 0

AB is a diameter of the large circle. The centers C1 and C2 of the smaller circles are on AB. The two small circles are congruent and tangent to each other and to the larger circle. The circumference of circle C1 is 8 π. What is the area?

A number of the form 213ab, where a and b are digits, has a remainder less than 10 when divided by 100. The sum of all the digits in the above number is equal to 13. Find the digit b. A) 5 B) 7 C) 6 D) 8 E) 9

The equation 1/a + 1/|a| = 0 has A) an infinite number of solutions B) no solutions C) 1 solution only D) 2 solutions only E) 3 solutions only

For what value of k will the two equations 2x + 4 = 4(x - 2) and -x + k = 2x - 1 have the same solution? A) 6 B) 2 C) 17 D) -1 E) 20

What is the area, in square feet, of the triangle whose sides have lengths equal to 10, 6 and 8 feet? A) 480 B) 24 C) 48 D) 30 E) 40

An object travels at fifteen feet per minute. How many feet does it travel in 24 minutes and 40 seconds? A) 360 B) 370 C) 367.5 D) 600 E) 960

a, b, c and d are numbers of different values such that a + b = d a·b·c = 0 Which of the 4 numbers MUST be equal to 0? A) a B) b C) c D) d E) none

Of the 80 students in class, 25 are studying German, 15 French and 13 Spanish. 3 are studying German and French; 4 - French and Spanish; 2 - German and Spanish; and none is studying all 3 languages. How many students are not studying any?

If w workers, working at equal rates, can produce x toys in n days, how many days it takes c workers, working at same equal rates, to produce y toys? A) y·x·c / w B) y·w·c /(w·n) C) y·w/(w·n·c) D) y·w·n / x E) y·w·n / (x·c)