131 goes to the first and -20 to the second
Answer:
Second answer
Step-by-step explanation:
We are given
and
. What we have to find are
and
.
First, convert
to
via trigonometric identity. That gives us a new equation in form of
:

Multiply
both sides to get rid of the denominator.

Then divide both sides by -3 to get
.
Hence,
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Next, to find
, convert it to
via trigonometric identity. Then we have to convert
to
via another trigonometric identity. That gives us:

It seems that we do not know what
is but we can find it by using the identity
for
.
From
then
.
Therefore:

Then use the surd property to evaluate the square root.
Hence, 
Now that we know what
is. We can evaluate
which is another form or identity of
.
From the boxed values of
and
:-

Then rationalize the value by multiplying both numerator and denominator with the denominator.

Hence, 
Therefore, the second choice is the answer.
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Summary


Let me know in the comment if you have any questions regarding this question or for clarification! Hope this helps as well.
Answer:
79
Step-by-step explanation:
60<xy<100
y -2 =x
if it is prime
y cannot be even
so y could be 1,3,5,7,9
x would then be 9,1,3,5,7
but to be between 60 and 100
x must be 7 or 9
so the number must be 79 or 57
57 is not prime so
the number is 79
Answer:
i dont get it
Step-by-step explanation:
Answer:
-6
Step-by-step explanation:
Add 2 to -26 to get -24. Divide -24 by 4 to get -6