Answer:
$18.72
Step-by-step explanation:
15% of $49.50 is $7.42
$49.50 - $7.42 = $39.08
$39.08 + $37.60 = $76.68
6% of $76.68 is $4.60
$76.68 + $4.60 = $81.28
$100 - $81.28 = $18.72
Answer:
$12/25 pencils= $0.48 per pencil
Answer:
see explanation
Step-by-step explanation:
(a)
(the side required )² = sum of squares of other 2 sides - ( 2 × product of other 2 sides and cos(angle opposite side required ) )
x² = 12² + 15² - (2 × 12 × 15 × cos71°)
(b)
x² = 144 + 225 - 360cos71°
= 369 - 360cos71° ( take square root of both sides )
x =
≈ 16 cm ( to the nearest integer )
When you multiply two powers of the same base, you sum the exponents:
So, in this case,
Now, negative exponents works like positive exponents, except you have to invert the number: i.e.
So, you have