My guess is 30 because every triangle has to add up to 180. 90+60 is 150 180-150 is 30
Well, If you want 4 letter codes with 5 letters, would be 5 x 4 x 3 x 2 which is 430. (It gets less because If you use one letter you cant use it again.)
Answer:
yes, they are equivalent
Step-by-step explanation:
solve the first equation for 'y' by subtracting 4x from each side, then dividing each side by 2
2y = -4x + 20
y = -2x + 10
English translation:
If the quality control manager wants to estimate the average life of lamps with 20 hours, with a confidence level of 95% and an error of 10% is assumed. What is the sample size?
Answer:
The answer to the first question is: 9 4/21
The answer to the second question is: B.) 24 14/27
I hope this helps you! :D
