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kiruha [24]
4 years ago
6

Katarina is buying types of bird seed by the pound. For 11.00, she can buy 2 pounds of thistle seed and 1.5 pounds of sunflower

seed. For 23.50 she can buy 3 pounds of thistly seed and 4 pounds of sunflower seed. How much does a pound of sunflower cost
Mathematics
1 answer:
katrin2010 [14]4 years ago
8 0

Answer:

Step-by-step explanation:

2t + 1.5s = 11

3t + 4s = 23.50

6t  + 4.5s = 33

-6t - 8s =   -47

-3.5s = -14

s = $4 a pound for sunflower seeds

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SOMEONE PLEASE HELP ME! I have a few of the explanations but I'm not sure if I need more please suggest some thank you
lesantik [10]

Answer:

For tingle #1

We can find angle C using the triangle sum theorem: the three interior angles of any triangle add up to 180 degrees. Since we know the measures of angles A and B, we can find C.

C=180-(A+B)

C=180-(21.24+27.14)

C=131.62

We cannot find any of the sides. Since there is noting to show us size, there is simply just not enough information; we need at least one side to use the rule of sines and find the other ones. Also, since there is nothing showing us size, each side can have more than one value.  

For triangle #2

In this one, we can find everything and there is one one value for each.

- We can find side c

Since we have a right triangle, we can find side c using the Pythagorean theorem

b^2=a^2+c^2

4^2=2^2+c^2

16=4+c^2

12=c^2

c=\sqrt{12}

c=2\sqrt{3}

- We can find angle C using the cosine trig identity

cos(C)=\frac{adjacent}{hypotenuse}

cos(C)=\frac{2}{4}

C=arccos(\frac{2}{4} )

C=60

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A=180-(90+60)

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For triangle #3

Again, we can find everything and there is one one value for each.

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A=180-(B+C)

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- We can find side a using the tangent trig identity

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a=\frac{7}{tan(34.88)}

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b^2=a^2+c^2

b^2=10.04^2+7^2

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Answer:

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