The ratio of Mrs Lee's age to her son's age now is 4 : 1
5 years later, the ratio of Mrs Lee's age to her son's age will become 3 : 1
How old is Mrs Lee now?
Answer: Let Mrs Lee's age and her son's age now be 4x and x respectively.
Mrs Lee's age after 5 years = 4x + 5
Her son's age after years = x + 5
We know that the ratio of Mrs Lee's age to her son's age after 5 years will be 3:1. Therefore, we have:
We have son's current age = 10 years
Therefore, Mrs Lee's is years old now
Answer:
<u>The function is:</u>
<u>According to data in the table we have:</u>
- f(1) = 3 ⇒ a(1)ⁿ = 3 ⇒ a*1 = 3 ⇒ a = 3
- f(2) = 12 ⇒ 3*2ⁿ = 12 ⇒ 2ⁿ = 4 ⇒ n = 2
<u>Since we found the values of a and n, the function becomes:</u>
<u>The number of infected to the tenth day:</u>
Answer:
It tells the anwser for some questions.
Step-by-step explanation:
Answer:
The answer is the last one (32x^7y^15)
You can bring x to the second power (x^2) because (x) is basically x^1. This is a basic exponent rule. (x^m)^n = x^m times n.
Then you can apply this rule to (2xy^3)^5. First you bring two to the fifth power and get 32. Then you bring x^5 according to the rule. Then you bring y^15, also because of the rule.
Now you have:
x^2 times 32x^5y^15
Now you just multiply the like terms together (x^2 and x^5)
When you multiply two exponents with the same base, you add the exponents together: a^n times a^m = a^n+m.
So you end up with 32x^7y^15