One sin a and one negative sin a would make a negative sin plus 2
Answer:
Step-by-step explanation:
15% of $35=0.15×$35=$5.25
Answer:
And the value for n rounded up would be n = 174
Step-by-step explanation:
We have the following info given:
previous estimation for the deviation
the margin of error desired
represent the confidence
The Margin of error is given by:
If we solve for the value of n we got:
For this problem we know that the confidence is 98% so then the significance level would be and the critical value would be:
And replacing we got:
And the value for n rounded up would be n = 174
Let the triangle be abc with equal sides ab,bc and ca
then perimeter = 3 ab = 12a + 18b
ab = = 4a + 6b ( each side will have this length)
Now since qr is a mid segment it will be = half length of ab
So qr = 2a + 3b Answer
This is known as The Theorem of Pythagoras
Basically is A2+B2+C2
Plug in the numbers as
16^2+B^2=30^2
Subtract 16 from both sides
16-16=0
30-16=14
Your Choice is A. 14cm