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Gre4nikov [31]
3 years ago
6

45) Toby cut one of these shapes out of a piece of paper folded

Mathematics
2 answers:
ozzi3 years ago
5 0
B it is the on,y one with any line of symmetry
Vlad1618 [11]3 years ago
4 0

Answer:

B) the bell because it is symmetrical down the middle

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In a triangle ABC, if <B = 60° and the ratio of two sides is a: c= 2: square root 3+1, then <A=
slavikrds [6]

Your answer is 75°.

To answer this question you need to use both the cosine rule and the sine rule. First, we need to find the length of side b by using the cosine rule, where a = 2 and c = √3 + 1. Then you substitute these into the equation:

b² = a² + c² - 2×a×c×cos(B)

b² = (2)² + (√3 + 1)² - 2×2×(√3 + 1)×cos(60)

b² = 4 + 4 + 2√3 - (4 - 4√3)×0.5

b² = 8 - 2 = 6

b = √6

Then you use this length in the sine rule, and find the angle:

\frac{sin(A)}{\sqrt{3}+1 } =\frac{sin(60)}{\sqrt{6} }

sin(A) = (√6 + √2)/4

A = 75

I hope this helps! Let me know if you have any questions

7 0
3 years ago
Which value of x is in the solution set of the following inequality?
andreyandreev [35.5K]

Answer:

C. 1

Step-by-step explanation:

Multiply every answer until you get an answer more than 6, and in this case it was C

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3 years ago
What is .64 divided by 3.456
Simora [160]

the answer to this question would be 0.185185185185185

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In 2011, the average annual premium for GEICO insurance policy owners in California dropped from $ 1187 to $ 1060. Find the perc
Allushta [10]
The answer is going to be 127% Hopes this helps :)
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What is /-7/ - /3/ ?
Olenka [21]

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4

Step-by-step explanation:

the absolute value of -7 is seven and the absolute value of 3 is 3.

7-3=4

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3 years ago
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