Answer:
Step-by-step explanation:
<u>Heron's Area formula:</u>
- A =
, where s is semi-perimeter - s = 1/2(a + b + c)
We are given two sides and the included angle.
<u>Use the law of cosines to find the missing side:</u>
- a² = b² + c² - 2bccos A
- a² = 77² + 41² - 2*77*41*cos 79
- a² = 6405
- a = 80 (rounded)
<u>Now find the value of s:</u>
- s = 1/2(80 + 77 + 41) = 99
<u>Find the area:</u>
- A =
=
= 1549.24
The temperature which has best degree of precision would
actually be the temperature reading which has similar decimal place with the
error. So the best answer would have 1 decimal and from the choices above, this
would be:
D. 16.0°C
Answer:-1/2
Step-by-step explanation:
Look at the points
9.48 but if rounded its 9.5
1/100 tickets = 1% chance = 0.01
$5 spent on 1 ticket
0.01(300) - 5
3-5
-$2