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3 years ago

Please help asap. 45 points

Mathematics

2 answers:

Levart [38]3 years ago

5 0

The answer is B. hope that help

ch4aika [34]3 years ago

5 0

2(10x^2) + 22x -12

2(10x^2) + 2(11x) - 12

2(10x^2) + 2(11x) + 2 (-6)

2(10x^2 + 11x) + 2 (-6)

2 (10x^2 + 11x - 6)

2 (10x^2 - 4x + 15x - 6)

2 (2x (5x - 2) + 3 (5x - 2))

2 ((5x - 2) (2x + 3))

Finally, your answer is 2 (5x - 2) (2x + 3)

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san4es73 [151]

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Step-by-step explanation:

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3 years ago

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What is the length of line PS

stiks02 [169]

$PQ^2 = PR \times PS$

$(4x + 4)^2 = (3x + 3)(3x + 3 + 21)$

$16x^2 + 32x + 16= (3x + 3)(3x + 24)$

$16x^2 + 32x + 16= 9x^2 + 81x + 72$

$7x^2 - 49x- 56 = 0$

$7(x^2 - 7x - 8)= 0$

$(x - 8)(x + 1) = 0$

$x - 8 = 0~~~or~~~x + 1 = 0$

$x = 8~~~or~~~x = -1$

x = -1 makes the lengths of segments PQ and PR equal zero.
That is not possible, so the solution x = -1 is discarded.

x = 8

PS = 3x + 3 + 21

PS = 3x + 24

PS = 3(8) + 24

PS = 24 + 24

PS = 48

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3 years ago