Answer:
240 million
Step-by-step explanation:
Google said that three out of four people wear corrective lenses which is also 75%. So whats 75% out of 320 million? <u>Half of 320 million is 160 million</u>. <u>Half of 160 million is 80 million, 160 million plus 80 million is </u><u>240 million.</u>
Answer:
![(x + 5) \times (x + 2)](https://tex.z-dn.net/?f=%28x%20%2B%205%29%20%5Ctimes%20%28x%20%2B%202%29)
Step-by-step explanation:
![{x}^{2} + 7x + 10](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%2B%207x%20%2B%2010)
![{x}^{2} + 5x + 2x + 10](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%2B%205x%20%2B%202x%20%2B%2010)
![x \times (x + 5) + 2(x + 5)](https://tex.z-dn.net/?f=x%20%5Ctimes%20%28x%20%2B%205%29%20%2B%202%28x%20%2B%205%29)
![(x + 5) \times (x + 2)](https://tex.z-dn.net/?f=%28x%20%2B%205%29%20%5Ctimes%20%28x%20%2B%202%29)
Answer:
2.5 or 10/4
Step-by-step explanation:
2÷4/5
Integers can be fractions. Which are just the summation of equal parts. So integers can be written in any fractional form as you like,
2/1÷4/5
But turning your fraction into an integer is not enough to divide, you must first use the reciprocal form of your dividend. and then you multiply to obtain your answer. (The reason is that division is multiplication of the reciprocal)
2/1×5/4
And tadaa! you get your answer
10/4
You can also simplify it!
5/2
Answer:
(x - 5)² = 41
Step-by-step explanation:
* Lets revise the completing square form
- the form x² ± bx + c is a completing square if it can be put in the form
(x ± h)² , where b = 2h and c = h²
# The completing square is x² ± bx + c = (x ± h)²
# Remember c must be positive because it is = h²
* Lets use this form to solve the problem
∵ x² - 10x = 16
- Lets equate 2h by -10
∵ 2h = -10 ⇒ divide both sides by 2
∴ h = -5
∴ h² = (-5)² = 25
∵ c = h²
∴ c = 25
- The completing square is x² - 10x + 25
∵ The equation is x² - 10x = 16
- We will add 25 and subtract 25 to the equation to make the
completing square without change the terms of the equation
∴ x² - 10x + 25 - 25 = 16
∴ (x² - 10x + 25) - 25 = 16 ⇒ add 25 to both sides
∴ (x² - 10x + 25) = 41
* Use the rule of the completing square above
- Let (x² - 10x + 25) = (x - 5)²
∴ (x - 5)² = 41