The answer is x=42.8+- (plus or minus) 12
So he should either have $30.80 or $44.80 left
Answer:
7.The decimal expression for 5 rupees 5 paise is _______________________.
(1 Point)
₹ 5.5
₹ 5.005
₹ 5.05
₹ 55
Step-by-step explanation:
7.The decimal expression for 5 rupees 5 paise is _______________________.
(1 Point)
₹ 5.5
₹ 5.005
₹ 5.05
₹ 55
Answer:
option 2
Step-by-step explanation:
The problem can be solved using Pythagoras' identity for a right triangle.
The angle between due East and due North is 90°
The solution here involves using the Cosine rule.
let x be the direct distance between house and office, then
x² = 17² + 21² - 2(17)(21)cos90° → option 2
Note that since cos90° = 0 the equation reduces to
x² = 17² + 21² ← Pythagoras' identity
Answer:
Step-by-step explanation:
5x + 12 = 12x + 5
-7x + 12 = 5
-7x = -7
x = 1
one solution
