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Liula [17]
3 years ago
10

Factoring polynomials X^2 +8x+7

Mathematics
1 answer:
Talja [164]3 years ago
7 0

Step-by-step explanation:

first find two numbers u multiply to get 7 and add to get 8: (1×7)=7,(1+7)=8

so in the first bracket u put (x +1) n in the other (x+7)

ans: (x+1)(x+7)

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Find the perpendicular bisector of the points A(3,6) and B(-1,4). Give your answer in the form
ICE Princess25 [194]

Answer:

the equation of the perpendicular bisector of segment AB is y = -2x + 7

Step-by-step explanation:

Going from B(-1, 4) to A(3, 6), x increases by 4 and y increases by 2.  Thus, the slope of this line is m = rise / run = 2/4, or 1/2.

Any line perpendicular to the one joining A and B has a slope which is the negative reciprocal of 1/2:  that'd be -2.

                                                               3 - 1       6 + 4

The midpoint of line segment AB is ( --------- , ---------- ), or (1, 5)

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Thus, the perpendicular bisector passes through the midpoint (1, 5) and has slope -2:

Starting from y = mx + b, we get  5 = -2(1) + b, or 7 = b, and so the equation of the perpendicular bisector of segment AB is

y = -2x + 7

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3 years ago
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Step-by-step explanation:

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3 years ago
What is the probability of getting blue and green on a spinner that is 3/10 and 1/5 blue
DaniilM [7]
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5 0
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Answer:

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Step-by-step explanation:

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vovikov84 [41]

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Step-by-step explanation:

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checking the work:

5(2) - 8 = 3(2) - 4

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4 0
3 years ago
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