Answer:
Discount = Original Price x Discount %/100
Discount = 37.99 × 80/100
Discount = 37.99 x 0.8
You save = $30.39
Final Price = Original Price - Discount
Final Price = 37.99 - 30.392
Final Price = $7.60
Answer:
Step-by-step explanation:
X. The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!
Answer:
A. 5/13
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Geometry</u>
- [Right Triangles Only] SOHCAHTOA
- [Right Triangles Only] cosθ = adjacent over hypotenuse
Step-by-step explanation:
<u>Step 1: Identify</u>
Angle θ = C
Adjacent Leg = 10
Hypotenuse = 26
<u>Step 2: Find ratio</u>
- Substitute [cosine]: cos∠C = 10/26
- [Fraction] Simplify: cos∠C = 5/13
You say you meant " <span>7/1 - square root of 5 " OK. I will interpret that to be:
7
---------------
1 - sqrt(5)
If you wish to rationalize the denominator, mult. both the numerator and the denom. of the above fraction by 1 + sqrt(5). You will get:
7( 1+sqrt(5) ) 7( 1+sqrt(5) )
--------------------- = ---------------------
1^2 - 5 -4</span>