Answer:
saving amount=$38.7
Step-by-step explanation:
given cost price=$86
discount on black friday=45%
selling price=cost price(1-discount%)
selling price=86(1-
)
selling price=86(
)
selling price=$47.3
saving amount=$86-$47.3=$38.7
saving amount=$38.7 answer
The answer to this question is 7 days = a week
Answer:
x = √(10) - 2, -√(10) - 2
Step-by-step explanation:
x² + 4x + 4 = 10
factor:
(x + 2)² = 10
take square root of both sides:
x + 2 = ±√(10)
split into 2 equations:
x + 2 = √(10) x + 2 = -√(10)
solve both equations and collect solutions:
x = √(10) - 2, -√(10) - 2
Use the Pythagorean Theorem
a^2 + b^2 = c^2
a and b are the legs, and c is the hypotenuse
You have 10 and 13 for the legs so
10^2 + 13^2 = c^2
Simplify
100 + 169 = c^2
269 = c^2
c is about 16
