Answer:
x = 90° or π/2 rad
Step-by-step explanation:
4+ 2 sin x=14-8 sin x
2 sin x + 8 sin x = 14 - 4
10 sin x = 10
sin x = 1
Using a calculator
x = sin
1
x = 90° or π/2 rad
Answer:
Distribute -4 through the parantheses so it can be easier so solve or its either that or collect the like terms
Step-by-step explanation:
Let me know if this helps.. If its not right then let me know so I can see if I can fix it
Answer:
The probability of testing positive for one is 0.20.
The probability of testing negative for one sample is (1-0.2)=0.8.
We only save time when all five are negative, which has a probability of 0.8^5=0.32768.
This means that the expected number of tests is
combined sample tests negative = 1 with probability 0.32768
combined sample tests positive = 1+5 retests = 6 with probability 0.67232
Expected number of tests
=Σ nipi / n
=(1*0.32768+6*0.67232)/5 [divide by 5 because we tested 5 samples]
= 0.87232 < 1
So yes, there is a saving.
Note: In practice, all medical tests are not absolute, i.e. they give false-positives(α) and false-negatives (β). The ratios 1-α and 1-β are respectively measures of specificity and sensitivity.
These two parameters complicate the simplistic evaluation above.
There are 7 parent tigers
Parents = 7
7 tigers each have 7 children. That means there's total of 7 × 7 children.
Children = 7 × 7 = 49
Each child has 7 friends. That means there's total of 49 × 7 friends.
Friends = 49 × 7 = 343
Total = 7 + 49 +343 = 399 TIGERS
I'm not a tiger so I'm not counting myself.
Answer:
4,-2 that is what it should be
