Answer:
see explanation
Step-by-step explanation:
The sum of the first 9 consecutive odd numbers is
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 81
Answer:
I did the first one on paper
Step-by-step explanation:
i also sent one page of my personal notes on right triangle Pythagoerean thereom I hope this helps
Answer:
x = 80
Step-by-step explanation:
Combine − 3/5x and 7/20x to get -19/20x.
Then combine -19/20x and 1/4x and you get -7/10x.
Then you multiply both sides by -10/7 which is the reciprocal of -7/10.
Make -56(-10) one fraction.
Multiply -56 and -10 and you get 560.
Then divide 560 by 7 to get 80.
Answer:
6.7
Step-by-step explanation:
Here, we can apply cosine law, ![c^2=a^2+b^2-2abcos\theta](https://tex.z-dn.net/?f=c%5E2%3Da%5E2%2Bb%5E2-2abcos%5Ctheta)
We the plug in values: ![(CB)^2+6^2+5^2-2*6*5*cos74](https://tex.z-dn.net/?f=%28CB%29%5E2%2B6%5E2%2B5%5E2-2%2A6%2A5%2Acos74)
and solve that CB is around 6.7