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Arada [10]
3 years ago
9

1.Which characteristics will prove that ΔDEF is a right, isosceles triangle?

Mathematics
1 answer:
nika2105 [10]3 years ago
3 0

Answer: The lengths of DE and EF are congruent, and their slopes are opposite reciprocals.

Step-by-step explanation: A right isosceles triangle doesn’t need to have the same slope.

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1. What is an equation of a line, in point-slope form, that passes through (1,-7) and has a slope of -2/3?
Nookie1986 [14]

1. What is an equation of a line, in point-slope form, that passes through (1,-7) and has a slope of -2/3?


Point Slope form y − y1 = m(x − x1)


Y1: -7 x1:1 slope :-2/3


Y-(-7)=-2/3(x-1)

Y+7=-2/3(x-1)


2. What is the equation of a line, in point-slope form, that passes through (-2,-6) and had a slope of 1/3?


Y-(-6)=1/3(x-(-2))


Y+6=1/3(x+2)



3.What is an equation in point-slope form of the line that passes through the points (4,5) and (-3,-1)


SlopeM: =change in y/change in x

M= -1-5/-3-4

M= -6/-7

M=6/7


So now slope:6/7, point (4,5)

Y-y1=m(x-x1)

Equation in point slope

Y-5=6/7(x-4)



6 0
4 years ago
Solve for x.<br><br> −1/2(x+2) + 1 1/2x = 3<br><br> A. x=1 ​<br> B. ​x=2 ​<br> C. ​x=4 ​<br> D. x=5
faltersainse [42]

-\dfrac{1}{2}(x+2)+1\dfrac{1}{2}x=3\ \ \ \ |\cdot2\\\\-(x+2)+3x=6\\\\-x-2+3x=6\\\\2x-2=6\ \ \ \ |+2\\\\2x=8\ \ \ \ |:2\\\\\boxed{x=4}\\\\Answer:\ C.\ x=4

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He would pay more in this point because 20% is more than 10 US dollars
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3 years ago
Factoring polynomials
Anton [14]
That's not a question, so idk what you need me to answer.. sorry
3 0
4 years ago
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