geno3141

28  =  1 + 3(v - 7)^(2/3)

Subtract 1 from both sides:

27  =  3(v - 7)^(2/3)

Divide both sides by 3:

9  =  (v - 7)^(2/3)

Since an exponent of 2/3, means "the cube root of the square", cube both sides:

729  =  (v - 7)^2

Find the square root of both sides:

27  =  v - 7

Add 7 to both sides:

34  =  v

On a graph, the equation  y = x - 1  becomes a straight line that has a y-intercept of -1 (the point (0,-1)), and from there moves to the upper right at a 45° angle, through the points (1,0), (2,1), (3,2), ...

The equation  y = -x + 5  becomes a straight line that has a y-intercept of 5 (the point (0,5) ), and from there moves to the lower right at a -45° angle, through the points (1,4), (2,3), (3,2), ...

Since i² = -1, 1 + i² = 1 + (-1) = 0.

What's the question?

1585 x 2.5 x 2.5 = 9906.25.

If the tiles are measured in feet, they will cover 9906.25 square feet. 

If the tiles are measured in inches they will cover 9906.25 square feet or 68.8 square feet.

If the ties are measured in yards, they will cover 9906.25 square yards or 89.156/25 sqiare feet.

The probability of getting 2 wins in ten chances with a 20% probability of success  is 0.032 (approximately).

x² + 22 x + 40

Because there are two plus signs in the problem, there must be one plus sign in each factor.

The problem is to find two numbers whose product is 40 and whose sum is 22; 20 and 2.

(x + 20)(x + 2)

When there is constant velocity there is no acceleration; thus, acceleration = 0 m/s².

(I am assuming that the direction does not change, when you say that it has a constant speed.)

If a jiffy is 1/100 of a second, then there are 100 jiffies in each second and 6000 jiffies in a minute.

50 words / minute  =  50 words / 6000 jiffies  =  1 word / 120 jiffies

This means that it takes 120 jiffies to type one word.

A formula for the surface area of a cone is:  SA  =  πr² + πr√(h² + r²)

Substituting:  SA  =  π(7)² + π(7)√( (24)² + (7)² )

                     SA  =  49π + 7π√( 576 + 49 )

                     SA  =  49π + 7π√(625)

                     SA  =  49π + 7x25π 

                     SA  =  49π + 175π 

                     SA  =  224π