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kari74 [83]
3 years ago
6

Besides the definition, what other way can you use the sides of a quadrilateral to prove that that it is a parallelogram? (Site

1)
Mathematics
1 answer:
Liula [17]3 years ago
3 0
A parallelogram has 4 sides, 2 of them are parallel to each other along with the others.
You can see how far (from the middle of the quadrilateral) is one end of the line and then indicate how far the other end is. If those numbers are equal to the other lines distance then they are parallel
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Let T:R²->R² be a linear transformation ,and assume that T (1,2)=(-1,1) and T(1,-1)=(2,3)
zavuch27 [327]

Answer:

(-4,-1)

Step-by-step explanation:

We are given T(1,2)=(-1,1) and T(1,-1)=(2,3) and T is a linear transformation.

This implies for scalars a and b that

T(a(1,2)+b(-1,1))=aT(1,2)+bT(-1,1)

T((a,2a)+(-b,b))=a(-1,1)+b(2,3)

T((a-b,2a+b))=(-a,a)+(2b,3b)

T((a-b,2a+b))=(-a+2b,a+3b)

This means we should be able to solve the system below to find a and b for T(3,3):

a-b=3 and 2a+b=3

Add equations to eliminate b and solve for a:

3a=6

Divide 3 on both sides:

a=2

If a-b=3 and a=2, then b=-1.

Plug in a=2, b=-1:

T((a-b,2a+b))=(-a+2b,a+3b)

T((2--1,2×2+-1)=(-2+2×-1,2+3×-1)

T(3,3)=(-4,-1).

4 0
2 years ago
Use the quadratic function to predict y if x equals 7.<br> y = 2x2 – 3x + 3
zheka24 [161]

Answer:

80

Step-by-step explanation:

f(7)=2(7)^{2} -3(7)+3

= 2(49)-21+3\\=98-21+3\\=80\\

7 0
3 years ago
If y varies directly with x and k = 3, what will y equal when x = 2?
Nikolay [14]
Y=3x
x-2
The correct answer is y=6
5 0
3 years ago
Read 2 more answers
I have to redo this test and I'm stuck on this question. Please help and please show work.
nexus9112 [7]
This is the answer hope this helped u

5 0
2 years ago
Solve for y2. d = y2- y1
kvasek [131]
D=y2-y1
D+y1= y2-y1+y1 add y1 to both sides to cancel it out.

D+y1=y2 that drops -y1 for the right side but the left remains.

And that's your answer.
8 0
3 years ago
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