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lakkis [162]
3 years ago
7

Solve the pair of simultaneous equations: 2x + y=7 x-2y+1

Mathematics
2 answers:
son4ous [18]3 years ago
4 0
2x + y = 7 is an eqn of a straight liney = -2x +7with a slope of -2, and an intercept of 7 the table is for a straight line with a positive slope of 2found from e.g using the first two points in the table: (1 - -1)/(-3 -  -4) = 2and an intercept of 7y = 2x + 7 or-2x + y = 7
makkiz [27]3 years ago
4 0
This is middle school right
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Step-by-step explanation:

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How many solutions does the given system of equations have?
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If the zeros of a quadratic equation are<br> 7 and 4, what would be the factors?
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Step-by-step explanation:

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Neporo4naja [7]

The length of PQ is 19.66 units

Step-by-step explanation:

The given is:

1. PK = KQ = 12

2. m∠P = 35º

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∵ m∠P = 35°

∴ m∠Q = 35°

The sum of measures of the angles of a triangle is 180°

∴ m∠P + m∠Q + m∠K = 180°

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Let us use cosine rule to find the length of PQ

∵ PQ = \sqrt{(KP)^{2}+(KQ)^{2}-2(KP)(KQ)cos(K)}

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The length of PQ is 19.66 units

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