For the first shipment, 5r+4h=62.
For the second shipment, 10r+3h=84.
pick either equation and solve for r, them plug this back into the other equation and solve for h, you should then be able to find the price per harmonica and per recorder. Comment if you need more help.
Answer: they are both triangles
Step-by-step explanation: they have 3 sides
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:
V=L*W*H
V= 4*4*5.6
V-89.6
Step-by-step explanation: