The best videos and questions to learn about Vertex Form of a Quadratic Equation. Get smarter on Socratic.

2016年11月23日 · If, by chance, you are seeking the decimal representation of this fraction, you can convert easily by simply dividing 5 into 2: 2 ÷ 5 ⇔ 5)¯¯¯¯¯¯¯2.00 0.4 5)¯¯¯¯¯¯¯2.00 20 ¯¯¯ ¯ 0 2 5 in decimal form is 0.4, or 40%. (Example: scoring 2 out of 5 on a quiz is a score of 40%.)

How do you find the first 4 positive values and first two negative values for x such that cos x = -0.67?

2016年6月5日 · You could find the answer one of two ways. The first is using the ion-product constant for water: Kw = [H3O+][OH−] = 1.0 ×10−14 Since Kw and the concentration of hydrogen ions in solution are known we can rearrange the equation to solve for the concentration of hydroxide ions. We can do this by dividing Kw by [H+] to solve for [OH-] like so: Kw / [H+] = …

In order to calculate the parts per million you will need to know how many mg of solute is dissolved in 1000g (1L) of water. 0.001g 1000g = 0.000001 Multiplying 0.000001 by 1,000,000 gives a result of 1ppm. Here is a video discussing this type of calculation. In the video, the number of moles of barium present in a 1L sample of water with a barium concentration of 2ppm is …

2017年10月18日 · A good diagram for these types of questions is useful From the diagram we see the object point (− 2, −5) is mapped to (x',y') by a reflection in the line X = 2 we note (1) the y-coordinate is unaffected. (2) for reflections the distance from the line of reflection to the object is equal to the distance to the image point. ∴ a = 2 +2 = 4units so the image point is 4 units from …

graph {4sinx [-11.25, 11.25, -5.62, 5.625]} In this sine wave the highest value is 4 and the lowest is −4 So the maximum deflection from the middle is 4 k. This is called the amplitude If the middle value is different from 0 then the story still holds graph {2+4sinx [-16.02, 16.01, -8, 8.01]} You see the highest value is 6 and the lowest is -2, The amplitude is still 1 2 (6 − − 2) = 1 2 ...

2015年5月10日 · Here are all 6 in the complex plane: graph { ( (x-1)^2+ (y-0)^2-0.002) ( (x-1/2)^2+ (y-sqrt (3)/2)^2-0.002) ( (x+1/2)^2+ (y-sqrt (3)/2)^2-0.002) ( (x+1)^2+ (y-0)^2-0.002) ( (x+1/2)^2+ (y+sqrt (3)/2)^2-0.002) ( (x-1/2)^2+ (y+sqrt (3)/2)^2-0.002) = 0 [-2.5, 2.5, -1.25, 1.25]} They form the vertices of a regular hexagon.

2018年7月21日 · The most common way to solve a quadratic equation to the fourth power would be using x^2 instead of x when factoring, an example is shown below. Depending on the specific problem, there are different ways that you may be able to solve the quadratic equation. Sometimes, you are able to factor each term by a numerical value, an example where this can …

2016年11月26日 · One mole of a substance is defined by Avogadro as consisting of 6.022 x 1023 atoms. This is Avogadro's number. To calculate the number of atoms in two moles of sodium, use dimensional analysis. 2.0 moles Na x 6.022 ⋅ 1023g 1mol = 1.20 ⋅ 1024 atoms of Na.