Answer:
Step-by-step explanation:
16 = 2 *2 * 2 * 2 = 2⁴
16y⁴ = (2y)⁴
x⁴ - 16y⁴ = x⁴ - (2y)⁴
= (x²)² - [ (2y)² ]²
{Use identity = a² -b² =(a +b)(a- b). Here a =x² & b =(2y)²}
= (x² + (2y)² ) (x² - (2y)² )
= (x² + 4y²) (x² - 4y²)
Answer:
![[H^{+} ]= 10^{-pH}](https://tex.z-dn.net/?f=%5BH%5E%7B%2B%7D%20%5D%3D%2010%5E%7B-pH%7D)
Step-by-step explanation:
To solve this question it is important to remember logarithm rules. That is:
![pH = -log[H^{+}]\\\\-pH = log_{10}[H^{+} ]\\\\H^{+}] = 10^{-pH}\\](https://tex.z-dn.net/?f=pH%20%3D%20-log%5BH%5E%7B%2B%7D%5D%5C%5C%5C%5C-pH%20%3D%20log_%7B10%7D%5BH%5E%7B%2B%7D%20%5D%5C%5C%5C%5CH%5E%7B%2B%7D%5D%20%3D%2010%5E%7B-pH%7D%5C%5C)
Answer:
This works because the metric system is based on powers of 10.
Step-by-step explanation:
since it's based on 10 it allows you to move the decimal to the left or right because each time you move it it goes up 10 or down ten depending on which way you move it. Each time you move a decimal it goes 10 either way.
:) hoped this helped
Please give me the brainliest answer
Answer:
She can play for 24 minutes and 30 seconds
Step-by-step explanation:
Let minute be represented by X
she is hit already 41 times
She is hit 10 times a minute meaning in X minutes she is hit 10X
41 + 10X ≤ 286
10X ≤ 286 -41
10X ≤ 245
X≤24.5
She can play for 24 minutes and 30 seconds
For number one, you’re decimal is technically after zero. To change your percentage into a real decimal number, move the decimal twice to the left. Then you will get 3.5. 3.5 is also equivalent to 3 1/2. Do the same for numbers 23 and four. For number five, each you need to know that each hole number represents 100%. If you do the math you will realize that 1/2 equals 50%. When you add them together, you get 250%. Do the same for Numbers six, seven, and eight.
