Answer:
Number of students= 820.64 = 821
Step-by-step explanation:
Giving the following information:
Current attendance= 950 students
Number of periods= 3 years
Decrease rate= 5%
<u>To calculate the number of students in attendance in 3 years, we need to use the following formula:</u>
Number of students= current attendance*(1+decrease rate)^(-n)
Number of students= 950*(1.05^-3)
Number of students= 820.64 = 821
This would simply be y=8x. Which is not one of the options. Are you sure that is the function?
Answer:
8 and 9.
Step-by-step explanation:
Let the two unknown numbers be a and b.
When added together, they equal 17. In other words:
a + b = 17.
The <em>difference</em> between five times the first number and three times the second number is 13. In other words:
5a - 3b = 13.
We have a system of equations. We can use substitution. From the first equation, we can derive a = 17 - b. Let's substitute this in:
5(17 - b) - 3b = 13
85 - 5b - 3b = 13
-8b = -72
b = 9
a = 17 - b.
a = 17 - 9 = 8.
Thus, the two numbers are 8 and 9.
Answer:
A = 1, B = 1
Step-by-step explanation:
From the question
(2x+1)/(x²+x) = A/x + B/(x+1)
(2x+1)/(x²+x) = [A(x+1)+(Bx)]/(x²+x)
Equation the numerator
2x+1 ≡ A(x+1) +Bx
2x+1 ≡ Ax+A+Bx
From the above,
A = 1.
And,
2x = Ax+Bx................ Equation 1
A+B = 2
Substitute the value of A into Equation 1
1+B = 2
B = 2-1
B = 1
Answer:
Step-by-step explanation:
