Answer:
x = infinite amount of solutions
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define Equation</u>
8(2x + 5) = 16x + 40
<u>Step 2: Solve for </u><em><u>x</u></em>
- Distribute 8: 16x + 40 = 16x + 40
- Subtract 40 on both sides: 16x = 16x
- Divide 16 on both sides: x = x
Here we see that <em>x</em> does indeed equal <em>x</em>.
∴ <em>x</em> has an infinite amount of solutions.
Answer: 50%
Step-by-step explanation: The customer paid half of what the shirt was originally for, so its 50% or "half" off.
Answer:
The angle of elevation of the sun is
.
Step-by-step explanation:
Let
be the angle of elevation of the sun as shown in the diagram.
Then the side length which is
feet is opposite to
and the side length which is
feet is adjacent to
.
Therefore we use the trigonometric ratio that involves the opposite and adjacent sides, which is the tangent ratio.


We solve for
to get,


To the nearest degree, the angle of elevation is 