<span>So the given numbers are:
=> One year, the price of wheat is 8.87 dollars
=> the next year, the price of wheat is 9.60 dollars.
We were asked to round each prices of bushels of wheat to its nearest tenths.
=> 8.87, where 8 before the decimal point is ones, 8 next to decimal point is tenths and 7 is the hundredths.
=>round off to the nearest tenths
=> 8.9
=> next is 9.60, where 9 is the ones value, 6 is the tenths value and 0 is the hundredths.
=> round off to nearest tenths
=> 9.6

</span>

5 0

3 years ago

Help please. show work

shtirl [24]

Sine law to find angle R

$\displaystyle \frac{\sin R}{122}= \frac{\sin 64}{187.5} \\ \\
\sin R = \frac{122\sin 64}{187.5} \\ \\
R = \sin^{-1} \left[ \frac{122\sin 64}{187.5} \right] \\ \\
R \approx 35.7899447211$

All angles in triangle add to 180 so we can find angle P

P = 180 - R - Q
P = 180 - 35.7899447211 - 64
P = 80.2100552789

sine law with angle P to find length of RQ

$\displaystyle
\frac{RQ}{\sin P} = \frac{187.5}{\sin 64} \\ \\
RQ = \frac{187.5\sin P}{\sin 64} \\ \\
RQ = \frac{187.5\sin 80.2100552789}{\sin 64} \\ \\
RQ = 205.57$

or use cosine law

$RQ = \sqrt{187.5^2 + 122^2 - 2(187.5)(122) \cos80.2100552789} \\ RQ \approx 205.57$

either way the answer is 205.57 feet

4 0

3 years ago