Answer:
11 cats
Step-by-step explanation:
I did trial and error.
I started with 16 cats and 17 dogs, so:
(16x$2.5) + (17x$4.5) = $116.5
The value is too low which means that they spent more money on the expensive side (i.e., dogs).
I ended up with 11 cats and 22 dogs, so:
(11x$2.5) + (22x$4.5) = $126.5
<h2>
The volume of a cylinder (y) = 
</h2>
Step-by-step explanation:
Given by question,
The volume of a cylinder = y, The radius of a cylinder(r) = x - 3 and
The height of a cylinder(h) = 2x + 7
To find, the volume of a cylinder (y) = ?
We know that,
The volume of a cylinder = 
⇒ 
⇒ y =
⇒ y =
∴ The volume of a cylinder (y) =
Thus, the volume of a cylinder (y) =
You can also refer:
brainly.com/question/8913282
Answer:
True.
Step-by-step explanation:
Any number that can be written as a fraction a/b where a and b are integers (neither a nor b= 0) is rational,
For example 3 ( = 3/1) , 1/3 , 5/10 are all rational.
Answer:
1) Both 15.
2) 25 and -25.
Step-by-step explanation:
1) Let the 2 numbers be x and 30 - x.
The product = x(30 - x)
f(x) = x(30 - x)
f(x) = 30x - x^2
Finding the derivative:
f'(x) = 30 - 2x
Finding the maximum:
30 - 2x = 0
x = 15.
This gives a maximum f(x) because f"(x) = -2.
So the numbers are 15 and 30 - 15 = 15.
2). If one number is x the other is y.
x - y = 50
y = x - 50
The product =
x(x - 50)
= x^2 - 50x
Finding the derivative:
2x - 50 = 0 for a minimum value.
2x = 50
x = 25.
So the numbers are 25 and 25-50 = -25.
It helps because seeing a number broken up helps your brain undertsand more clearly as to what exactly you are multiplying.
