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Sindrei [870]
3 years ago
6

4. You and a friend go to the movies and split the cost of the movie tickets and snacks. You pay the bill. You tell your friend

he owes only $9 because you owed him $4 from the last time you went to the movies. How much was the total bill? Let b represent the total bill. Identify the correct equation to represent this problem and the correct solution. (1 point)
A. B/2+ 4 = 9; b = $10
B. B/2– 4 = 9; b = $26
C.B/2+ 9 = 4; b = $26
D.2b – 4 = 9; b = $7.50
(WILL GIVE MEDAL
Mathematics
2 answers:
zmey [24]3 years ago
8 0
The answer is B: B/2 - 4 = 9
You are taking half of the total bill (what the friend owes), then subtracting the 4 dollars that he does not have to pay because you owe him. This gives you the total of $9. So, the total cost is $26.
tigry1 [53]3 years ago
3 0
The answer is B/2-4=9; b =$26
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You can use a tangent:

tangent=\dfrac{opposite}{adjacent}

We have opposite = 17 and adjacent = x.

\tan30^o=\dfrac{\sqrt3}{3}

substitute:

\dfrac{17}{x}=\dfrac{\sqrt3}{3}       cross multiply

x\sqrt3=(3)(17)     multiply both sides by √3

x(\sqrt3)(\sqrt3)=51\sqrt3

3x=51\sqrt3      divide both sides by 3

x=17\sqrt3

Use the Pythagorean theorem:

y^2=(17\sqrt3)^2+17^2\\\\y^2=289(\sqrt3)^2+289\\\\y^2=289\cdot3+289\\\\y^2=867+289\\\\y^2=1156\to y=\sqrt{1156}\\\\y=34

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Other method.

30^o-60^o-90^o triangle.

The sides are in the ratio 1:2:\sqrt3\to17:y:x

Therefore

17:(2\cdot17):(17\sqrt3)\to17:34:17\sqrt3\to x=34,\ y=17\sqrt3

 


4 0
3 years ago
ILL GIVE BRAINLEST:))
valkas [14]

Answer:

2 and 3  

Step-by-step explanation:

2) If two polygons are similar, the ratio of their areas is equal to the square of the ratio of their corresponding sides. 

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3)If two polygons are similar, then the ratio of their perimeters is equal to the ratios of their corresponding side lengths.

The ratio of the perimeters is the same as the scale factor.

 scale 1:4

4 0
3 years ago
Subtract 1/4w+4 from 1/2w+3.<br><br> A. −14w+7<br><br> B. −14w+1<br><br> C. 14w+7<br><br> D. 14w−1
frozen [14]
Im going with B) -14w+1
3 0
3 years ago
Read 2 more answers
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Answer:

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C = circumference

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Equation: 21(π) = 65.97344573

Make sure to round to whatever decimal place is asked for!

6 0
3 years ago
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11111nata11111 [884]

Answer:

Step-by-step explanation:

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7 0
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