Answer:
42cm
Step-by-step explanation:
It's a rectangle so sides are 6, 6, 15, 15. Σs = 42.
Answer:
$22.50
Step-by-step explanation:
$32.00 *0.60=19.20
$5.50 * 0.60=3.30
19.20+3.30=$22.50
**I multiplied bu 0.60, because full price is 100% or 1.0, but minus the 40% discount you are paying 60% or 0.60***
Answer:
6
Step-by-step explanation:
6 X 7 = 42
Answer:
x = ±2√10
Step-by-step explanation:
40 - x² = 0
⇌
(√40 - x)(√40 + x) = 0
⇌
x = √40 or x = -√40
we can go further and say that √40 = 2√10
