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DochEvi [55]
3 years ago
12

Need help with #16 please

Mathematics
1 answer:
inna [77]3 years ago
6 0

multiply the 1st by -3 then

-3x = 2y - 5

3x-y=5

0+y=5

y=5

to find x substitute y in to the first eqn

x=2×5-5

x=5

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X2 + 3x - 108 = 0<br> What is the answer?
worty [1.4K]

Answer:

The answer is x=9 and/or x = -12

Step-by-step explanation:

This is a quadratic formula meaning that you must take the a value (1) b value (3) and the c value (108) and plug it into the quadratic formula.

\frac{-3±\sqrt{9+4*1*-108} }{2}

which simplifies to -3 add or subtract the sqrt of 441 divided by two.

5 0
4 years ago
the diagram below shows the angles formed by some intersecting lines. give that m&lt;8=34, m&lt;9=40, and mm&lt;3=62, find the m
MrMuchimi

Answer:

m<4 = 44°

Step-by-step explanation:

m<8 = 34°

m<9 = 40°

m<3 = 62°

m<2 = 34° + 40° (exterior angle theorem of a triangle)

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m<3 + m<4 + m<2 = 180° (sum of ∆)

62° + m<4 + 74° = 180° (substitution)

m<4 + 136° = 180°

m<4 = 180 - 136 (substitution property of equality)

m<4 = 44°

5 0
3 years ago
Quick! Andrew has to play 15 games in a chess tournament. At some point during the tournament he has won half of the games he ha
nikklg [1K]

x - the number of the games he played

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15-12=3

<u>so, he has still 3 games to play</u>

3 0
3 years ago
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zheka24 [161]
The greatest common factor is 1
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aliya0001 [1]

Answer:

Yes, it is larger then 14.

Step-by-step explanation:

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