Answer:
There are 2500 girls
Step-by-step explanation:
So we have to show their ratio which is 4 : 5 = boys : girls
So then we sum them up to divide. 4 + 5 = 9
Since girls are 5 It'll be
So let's multiply:
girls: 2500
Answer: m-10
Step-by-step explanation:
Nana was m-10 years old ten years ago.
I hope this helped!
Answer:
Step-by-step explanation:
Given
$x per adult
$8 per student
Population:
Required
Determine the equation and solve for x
The system can be analyzed as thus:
The cost for 4 adults is: 4 * x
The cost for 1 students is: 8 * 1
Total Amount is: 48
From the analysis above, the equation is:
Subtract 8 from both sides
Solve for x
Answer:
Step-by-step explanation:
let f(x)=y
y=2x+5
flip x and y
x=2y+5
2y=x-5
y=(x-5)/2
f^{_1}(x)=(x-5)/2
but f^{-1}(x)=1
so (x-5)/2=1
x-5=2
x=2+5=7