Step-by-step explanation:
use herons formula
√s(s-a)(s-b)(s-c)
where s is the semi perimeter
S=20
and a,b,c are sides of triangle
=√20(20-17)(20-9)(20-14)
=√20.3.11.6
=62.92
nearest whole number is 63
option B is correct
Answer:
a
Step-by-step explanation:
Step-by-step explanation:
Speakers =£ 31.5
Headphones =£ 4.8
Book =£ 3.85
Mobile phone =£ 36
mouse = £12.75
DVD =£ 10.2
Hope it will help you :)
Answer:
The last answer choice.
Step-by-step explanation:
8/10 is equal to 0.80, so that's the answer! Hope it helps!
(a-25b)(a+4b)=0
Use the quadratic formula or complete the square by looking at the factors
