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0:03:24

The graph of x^2 + x + y^2 + y = 199/2 in the xy-plane is a circle. What is the length of the....

0:04:48

57x^2 + (57b + a)x + ab =0; In the given equation, an and b are positive constants. The product...

0:05:10

The rational function f is defined by an equation in the form f(x) = a/x+b, where a and b are....

0:04:10

y = -1.5; y = x^2 + 8x + a; In the given system of equations, a is a positive constant. The system..

0:05:37

The expression 4x^2 + bx - 45, where b is a constant, can be rewritten as (hx + k) (x + j), where...

0:02:53

Data set A consists of the heights of 75 buildings and has a mean of 32 meters. Data set B.....

0:04:01

x^2 - 34x + c = 0; In the given equation, c is a constant. The equation has no real solutions if...

0:02:17

A gift shop buys souvenirs at a wholesale price of 7.00 dollars each and resells them each at a....

0:04:38

2(kx - n) = (-28/15)x - 36/19; In the given equation, k and m are constants and n is greater than...

0:03:27

P(t) = 290(1.04)^(4/6)t; The function P models the population, in thousands, of a certain city t....

0:02:49

A sample of oak has a density of 807 kilograms per cubic meter. The sample is in the shape of a....

0:02:03

Line p is defined by 2y + 18x = 9. Line r is perpendicular to line p in the xy-plane. What is the...

0:01:07

The function f is defined by f(x) = (x+15)/5, and f(a) = 10, where a is a constant. What is the.....

0:04:26

For the quadratic function f, the table shows three values of an and their corresponding values...

0:02:02

A machine makes large boxes or small boxes, one at a time, for a total of 700 minutes each day....

0:00:43

If 7x = 28, what is the value of 8x?

0:02:12

5x^2 + 10х + 16 = 0; How many distinct real solutions does the given equation have?

0:01:24

Each face of a fair 14-sided die is labeled with a number from 1 through 14, with a different....

0:04:56

The point with coordinates (d, 4) lies on the line shown. What is the value of d?

0:02:44

A model estimates that at the end of each year from 2015 to 2020, the number of squirrels in a.....

0:03:14

The graph of 9x - 10y = 19 is translated down 4 units in the xy-plane. What is the -coordinate of...

0:02:54

The first term of a sequence is 9. Each term after the first is 4 times the preceding term. If w...

0:01:40

Which expression is equivalent to 7throot(x^9y^9), where x and y are positive?

0:00:57

(5x^3 - 3) - (-4x^3 + 8); The given expression is equivalent to bx^3 - 11, where b is a constant....