Calculus

Complete the square.

X^2 + 2X

halve the linear term ( 2 ), square it and add to polynomial

X^2 + 2X + 1

30*13 = 390

(2x)(2y) is the exact same as (2)(x)(2)(y) since they are all multiplication, which can be rearranged in any order, so this is also the same as (2)(2)(x)(y), which is the same as (4)(x)(y), so in the end:

(2x)(2y)=4xy

If a right circular cone intersects a plane that passes through one of its nappes, but the plane is not parallel to an edge of the cone, the resulting curve will bea(n) _____

.

ellipse

This is hard to graph via wiki, but first you must solve for y. Therefore,

y = 2x + 5

5 is the y-intercept, which means at the point (0,5), you should make a dot. The slope is 2, or 2 over 1. At the dot you just made, move up two spaces, and then to the right one space. Make another dot. Use a ruler to connect the two dots.

Cosine of 1 degree is about 0.999848.

Cosine of 1 radian is about 0.540302.

740

The number of digaonals is given by n(n-3)/2, where n is the number of sides (or vertices) of a polygon:

40(40-3)/2=20*37=740

For a proof, see:

http://www.artofproblemsolving.com/Wiki/index.php/Diagonal

12 x 3 = 36

(12 x 3)2 = 362 = 1296

NOTE : The calculation can also be performed on the individual terms.

122 x 32 = 144 x 9 = 1296

1 nm = 0.001 µm

1 µm = 1000 nm






you may try the online converter linked below next time

36

x² + 8x -2 = 0

x² + 8x = 2

x² + 8x + (8/2)² = 2 + (8/2)²

x² + 8x + 16 = 2 + 16

(x + 4)² = 18

x + 4 = ±√18

x = -4 ±√18

x = -4 + √18 or x = -4 - √18

if you are still confused, i want you to follow the related link that explains the concept of completing the square clearly.

x = 2

5 x 3 - 2 = 13

x = 7

The time of swing of a pendulum is T = 2π √ (l/g) where l is the length of the pendulum.

As T ∝√l (Time is directly proportional to the square root of l) then, the longer the pendulum, the greater is the period. Therefore longer pendulums have longer periods than shorter pendulums.

x = -1 OR x = 3

x2 - 7x + 10 = 28; whence,

x2 - 7x - 18 = 0, and

(x - 9)(x + 2) = 0.

The above is true exactly when, either,

x - 9 = 0, or

x + 2 = 0.

Therefore, the solution is:

x = 9 or -2.

Checking,

92 - (7)(9) + 10 = 81 - 63 + 10 = 28; and

(-2)2 - (7)(-2) + 10 = 4 + 14 + 10 = 28;

verifying the solution found above.

mensos yo no me la seee

The formula for WHAT? Since you have not bothered to specify that crucial bit of information, I cannot provide a more useful answer.

The formula for WHAT? Since you have not bothered to specify that crucial bit of information, I cannot provide a more useful answer.

The formula for WHAT? Since you have not bothered to specify that crucial bit of information, I cannot provide a more useful answer.

The formula for WHAT? Since you have not bothered to specify that crucial bit of information, I cannot provide a more useful answer.

control+z = undo

320000 is 320000 lots of 1s.