Answer: Choice C
sin(26) = x/10
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Explanation:
With respect to the 26 degree angle, the x is the opposite side and the 9 is the length of the adjacent side.
We can say tan(26) = x/9 because tangent is the ratio of opposite over adjacent. In other words, tan(angle) = opposite/adjacent
Unfortunately, tan(26) = x/9 is not an answer choice.
Luckily though, we have other trig ratios to work with.
The sine ratio ties together the opposite side and hypotenuse
sin(angle) = opposite/hypotenuse
sin(26) = x/10
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Extra info (optional section)
Solving for x leads to...
sin(26) = x/10
10*sin(26) = x
x = 10*sin(26)
x = 4.38371 approximately
Also, note how cos(26) = 0.89879 approximately, which is fairly close to 9/10 = 0.9. This indicates some rounding error is going on when your teacher is displaying either the 9, the 10, or the 26 degree angle.
Answer:
Step-by-step explanation:
Answer:
2(4-x)=26
Step-by-step explanation:
<u><em>1. Plug "-9" into each equation as "x"</em></u>
2(4--9)=26
5(-9)+30=75
5(12--9)=15
3(-9+11)=-16
<u><em>2. Solve each equation</em></u>
2(4--9)=26 ~ 26=26
5(-9)+30=75 ~ -5=75
5(12--9)=15 ~ 105=15
3(-9+11)=-16 ~ 6=-16
Answer: The 10-ounce for $5.11
Step-by-step explanation:
5.11/10 = 0.51
10/16 = 0.63
The smaller the unit price, the better deal it is.
The second one is equal to each other regardless, if you cancel the 2x you get 12 = 12