3 years ago

Four lines that are parallel because I am doing a math project taint glass

Mathematics

1 answer:

KengaRu [80]3 years ago

4 0

Was there supposed to be a picture

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Solve 2x2 − 8x = −7.

leva [86]

$\sf 2x^2 - 8x = - 7 \\ \\ Subtract \ -7 \ from \ both \ sides \ of \ the \ equation. \\ \\ 2x^2 - 8x - (-7 ) = - 7 - (-7) \\ \\ 2x^2 - 8x + 7 = 0 \\ \\ Use \ quadratic \ formula \ a = 2, b = -8, c = 7 \\ \\ x = \dfrac{- b \pm \sqrt{b^2- 4ac} }{2a} \\ \\ \\ x = \dfrac{-(-8) \pm \sqrt{(-8)^2 - 4 (2) (7) } }{2(2)} \\ \\ x = \dfrac{8 \pm \sqrt{8} }{4} \\ \\ x = 2 + \frac{1}{2}\sqrt{2} \ or \ x = 2 + \frac{-1}{2} \sqrt{2}$

Ur answer is the fourth one

7 0

4 years ago

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Mrs.Baca uses a phone card to call her relatives in Colombia.It costs her 45 cents to talk for 15 minutes.How long can she talk

zysi [14]

45/15= 3

So 1 minute=3 cents

75*3=225=2.25 converted

75 minutes=$2.25

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3 years ago

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Find the slope given<br> the ordered pairs:<br> (-3,-2) and (-3,-5)

Mademuasel [1]

Step-by-step explanation: