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eduard
3 years ago
13

Please help with these pre-calc questions im so lost

Mathematics
1 answer:
mel-nik [20]3 years ago
6 0

Answer: Question #1 B, Question #2 A: 9, –9, and Question #3 (a) A, (b) x–(1/2, 1/3, –7)= 0, and (c) 0?

Step-by-step explanation:

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Please help ASAP 40 PTS
umka21 [38]

Answer:

70

Step-by-step explanation:

The angle not marked in the top triangle is 40 degrees since it is an isosceles triangle.  That makes the angle opposite it in the other triangle 40 degrees since they are vertical angles and vertical angles are equal.

The bottom triangle has 3 angles that sum to 180 degrees,  The other angle not marked is also y since it is an isosceles triangle.

40 + y +y = 180

Subtract 40 from each side and combine like terms

40-40 +2y = 180-40

2y = 140

Divide by 2

2y/2 = 140/2

y = 70

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4 years ago
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Annette [7]

Answer:

0.52

Step-by-step explanation:

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Sauron [17]

Answer:

b=\frac{a}{2} +\frac{c}{2}

Explanation:

While solving literal equations could be quite overwelhming, simply solve it by using normal equation solving methods.

For example, if you were to solve 2x + 3 = 9

You would add 3 on both sides and divide both sides by 2 to determine x.

Do the same thing for literal equations, and if in doubts, plug in numbers to check your work.

Step-by-step explanation:

For this problem, add c on both sides, we do this because we are aiming to eliminate the c from both sides.

a+c =2b

In order to find the value of b, divide both sides by 2, we do this because we want to get rid of the coefficient.

This should leave you with the answer of b=a/2 + c/2

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Depending on your graph go down 4 an across until u get to the other dot
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