Answer:
C
Step-by-step explanation:
(2x-3)(4x+5)
=2x(4x+5)-3(4x+5)
=8x^2+10x-12x-15
=8x^2-2x-15
We can use a system of equations in order to solve for both of the numbers. Let's start off by assigning variables to each number. The bigger number can be 'x', and the smaller number can be 'y'.
We can make two equations from the given:
x = 18 + y
("One number is 18 more than another number")
x + y = 36
("The sum of the numbers is 36")
If you look at the first equation, the variable 'x' already has a value (18 + y). We can input its value into the second equation in order to solve for y:
x + y = 36
(18 + y) + y = 36
18 + 2y = 36
2y = 18
y = 9
Input the value of 'y' into the first equation:
x = 18 + y
x = 18 + 9
x = 27
<u>One number is 27 and the other number number is 9.</u>
<u></u>
Let me know if you'd like me to explain anything I did here.
- breezyツ
The answer would be -18/-7
Answer:
There is 12% of last semester's college costs was spent on books. Step-by-step explanation: Since we have given that.
Step-by-step explanation:
Answer:
The angle of elevation is given by,
∅ = 
Step-by-step explanation:
<em>The length ladder is given as 20.75 feet.</em>
<em>The depth of ground is 3 feet below.</em>
The figure formed is that of a right angled triangle.
Let the angle of elevation be ∅.
By trigonometry,
sin(∅) = 
Thus, the angle of elevation is given by,
∅ =
