It's too easy just to calculate the actual value:
726 × 5 = 726 × 10/2 = 7260/2 = 3630
_____
You might estimate the value as 700 × 5 = 3500. You might estimate that to be low by 26/700 ≈ 4%, so about 140.
Answer:
n = 13 - 5
Step-by-step explanation:
Given,
Amount of money Sally had at first = $13
Amount of money Sally Spent = $5
amount of money left over, n
= Amount of money Sally had at first - Amount of money she spent
= 13 - 5
hence
n = 13 - 5
Answer: See the screenshot below.
Explanation:
We'll be using these trig functions
- sine = opposite/hypotenuse
- cosine = adjacent/hypotenuse
- tangent = opposite/adjacent
The inverse of those help us find the angle. Notation like arcsine is the same as inverse sine denoted as 
on many calculators.
The decimal results are approximate.
Answer:
I believe the answer is 9 years old or 8 years old.
