2^2 + 3*4 may be evaluated using order of operations (PEMDAS) rules. We must do the exponentiation first, followed by the mult., and only then the add'n.
2^2 + 3*4 = 4 + 12 = 16
Answer:-0.868
Step-by-step explanation: Find the number that is in the thousdants place which is the first 7 and look one place to the right for the rounding diget which is the next 7, and if the last 7 is lower that 5 round down and if it is greater than 5 round up.
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Answer:
We use it to substitute an unknown number. We have a variable for a number we don’t know and as we solve the problem we can find the answer for the variable or unknown number.
Step-by-step explanation:
I hope it helps! Have a great day!
Anygays-
The correct answer is 7 9/14, I have provided my work shown below
Recall the half-angle identity:
So in order to find
, we only need to know the value of
. But there are two possible values. To decide which to take, we use the given information: we know that
lies in quadrant III, which means
, so
, which places
in quadrant II. In this quadrant, the sine of angle is positive, and so
is an angle of a ray whose terminal point,
lies on the circle
. The
-coordinate is all we need to know in order to find that
. So,
