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3 years ago

Is (1, 1) a solution to 3y=2x+1

Mathematics

2 answers:

REY [17]3 years ago

6 0

To check whether (1, 1) is a solution for 3y = 2x +1, You must take the value of x as 1 and the value of y also as 1.

Substituting these values of x and y, we get,

3*1 = 2*1 + 1

3 = 2 + 1 which is true.

Therefore, (1, 1) is a solution of 3y = 2x + 1

Snowcat [4.5K]3 years ago

3 0

Yes.
3y=2x +1
3 (1) = 2 (1) +1
(3,3)
(1,1) is a solution

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3 years ago

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3 years ago

Laws of cosines!!! find B round to the nearest tenth!!!! second time posting this help ASAP!!!

Nookie1986 [14]

Answer:

32.7°

Step-by-step explanation:

Use the formula for law of cosines, for this question we need so solve for angle B, so use...

b² = a² + c² - 2(a)(c)Cos B

We are given a, b, and c, so plug them in...

55² = 90² + 50² - 2(90)(50)Cos B

Now simplify...

3,025 = 8100 + 2500 - (9000)Cos B

-7,575 = -(9000)Cos B (subtract 8100 and 2500 from both sides)

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Cos^(-1) 0.841666667 = B (use cosine inverse function on calculator)

32.68346376° = B

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3 years ago