KeyConcept Law of Cosines In AABC, if sides with lengths a, b, and care opposite angles with measures A, B, and C, respectively, then the following are true. a²=b²+²-2bc cos A b²=²+²-2ac cos B c²=²+b²-2ab cos C 1. Solve ABC. 12 O

Q: Solve -5 + 7,I +6 = 37 for a

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Q: Solve for x in -1-4 30 XT. = -10 X = = -2-54 1 -2 XT. 2-4-4 -24

A: Given the matrix equation:[−13​−40​]XT=−10[−22​−5−4​4−4​]+[1−2​−24​]XT Let's denote the left-hand…

Q: solve for w. 3w2+7w+4

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Q: 3.2 H.

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Q: Solve 3/I + 10 – 5 = 4 for z न ]

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Q: Multiply. (ex − e−x)2

A: Here we multiply this:

Q: Solve for b. * 13 12 18 24 of

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Q: Solve for x: A 2B x+3

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Q: V8x +33= x + 6

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Q: Solve for x. 2x+29 3x+8

A: Both the angle with x variable makes a supplementary angle.i.e (180°).

Q: Solve. (a-4)(a+7)=0

A: We need to solve the equation (a−4)(a+7)=0

Q: 2x x + 2 12 8

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Q: Solve. x + y + z = 61 - 2x + 4y = 48 - Z = -9 (1) (2) (3) | The solution is

A: we have to solve the given system of equation

Q: ADEFAWVU 18x+6 D 156

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.