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KengaRu [80]
3 years ago
13

Correct 0.04945 to two significant figures​

Mathematics
1 answer:
topjm [15]3 years ago
6 0

Answer:

0.049.

Step-by-step explanation:

The number after the 9 is 4 so 9 remains.

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PLZZ ANSWER QUESTION 18
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In order to find the other end point we must know where the End point is.

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In order to find out the new point we must know how long the line segment is.

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Consider a triangle ABC
N76 [4]

Answer:

A =24.7° ; B = 40.6° ; C =114.7°

Step-by-step explanation:

Cosine Law

a² = b²+c²-2bc cos A

b² = c²+a² -2ca cos B

Sum of three angles of a triangle is 180°.

a = 34 ; b= 53; c = 74

Substituting the given values in the cosine law, we have

34² = 53² + 74² - 2*53 *74 * cos A

7844 cos A = 2809 + 5476 - 1156 = 7129

cos A = 7129/7844 = 0.9088

A = cos⁻¹ (0.9088) = 24.6600° = 24.7°

53² = 74² + 34² - 2 (74)(34) cos B

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cos B = 3823/5032 = 0.7597

B = cos⁻¹ (0.7597) = 40.5622° = 40.6°

Also, A + B + C = 180°

24.7 + 40.6 + C =180

C =180 -  65.3 = 114.7°

∴ A =24.7° ; B = 40.6° ; C =114.7°

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I believe the answer is A
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