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Leno4ka [110]
4 years ago
13

The graphs of y-2x = 1, 4x + y = 7, and 2y - x= -4 contain the sides of triangle. Find the coordinates of the vertices of the tr

iangle.
a. (-1,0), (-3, 2), (4,2)
C. (-4,3), (2, -1), (-2, -3)
b. (1,3), (2, -1), (-2,-3)
d. (-1,0), (4,2), (-5, 8)
Letter answers only pls
Mathematics
1 answer:
Darina [25.2K]4 years ago
6 0

Answer:

i think the right answer is b

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Please answer CORRECTLY !!!!!!!! Will mark BRAINLIEST !!!!!!!!!
anygoal [31]

Answer:

-(x+7)/6

Step-by-step explanation:

y = -6x-7

Exchange x and y

x= - 6y-7

Solve for y

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x+7 = -6y-7+7

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3 0
3 years ago
A manufacturer of a new nicotine nasal spray claims that their product has a 30% success rate for smoking cessation. In a clinic
harkovskaia [24]

answer:

we reject null and conclude that this manufacturers claim is false

Step-by-step explanation:

p = 30% = 0.30

p^ = 93/150 = 0.62

we state the hypothesis

H0: p = 0.30

h1: p not equal to 0.30

we find the z test stattistics

z=\frac{p^--p}{\sqrt{\frac{p(1-p)}{n} } }

z=\frac{0.62-0.30}{\sqrt{\frac{0.30(1-0.30)}{150} } }

z=\frac{0.32}{\sqrt{\frac{0.30*0.70}{150} } }

z=\frac{0.32}{0.03741}

z = 8.5538

at alpha = 0.05

z-critical = Z₀.₀₅/₂ = Z₀.₀₂₅

= 1.96

we compare z critical with the test statistic

z statistic > z critical so we have to reject H₀ and conclude that the manufacturers claim is not valid at 0.05 level of significance.

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3 years ago
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