Using the law of sines:
Solve for b:
Answer:
7.708
The scores on an entrance exam to a university are known to have an approximately normal distribution with mean 65% and standard
1 answer:
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Answer:
x=12
Step-by-step explanation:
We know that a right angle is 90 degrees. So we can make the equation Now, we can solve fore X! We can combine 35 and 7 to make the equation
. In order to isolate x we have to subtract 42 from both sides, getting us the equation
Now, in order to isolate x we must divide each side by 4, getting us the equation
. To prove that x=12, we can subsitute x for 12. This means that we can do
which simplified, is 90=90, making x=12 true. Hope this helps :)