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MAVERICK [17]
2 years ago
6

What is y=x 9x-2y=-49 using substitution

Mathematics
1 answer:
Veronika [31]2 years ago
6 0

Answer:

y= -7

Step-by-step explanation:

Substitute y for x in the equation since the rule is true.

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Write a coordinate proof. Prove quadrilateral WXYZ, having vertices W(-5, 6), X(-1, 10), Y(1, 4), and Z(-2, -3) is a trapezoid.
Igoryamba

Answer:

The diagonals are bisectors of each other and meet at  (1, -5/2) but are not congruent, so WXYZ is a parallelogram and not a rectangle

Step-by-step explanation:

for parallelograms.

the diagonals intersect at the midpoints

W                             X

Z                             Y

Diagonals are  WY  and  XZ

WY :   (-4, -3) to  (6, -2)

midpoint is   [(-4 + 6)/2  ,  (-3 - 2)/2 ] = ( 1, -5/2 )

XZ :   (0, -1)  to  (2, -4)

midpoint is  [ (0 + 2)/2 ,  (-1 + -4)/2 ]  = (1, -5/2)

The diagonals are bisectors of eachother.

Next show that these diagonals are not congruent.

length of  WY  =  root (  (-4 - 6)^2  +  (-3 - (-2))^2 )

WY = root ( 100  +  1)

WY = root(101)

length of XZ  =  root (  (0 - 2)^2  +  ( -1 - -4)^2 )

XZ =  root (4  +  9) = root (13)

we see that  WY  is not equal to XZ

...

so  ..  quadrilateral WXYZ is a parallelogram but not a rectangle.

6 0
4 years ago
What is 0.54 repeating
Phoenix [80]
If you mean as a fraction:0.54 repeating as a fraction is 54/99.
7 0
3 years ago
Solve.<br>1.5 - 0.25(a + 4)= 3 + 3(0.05 - 0.5a)
alisha [4.7K]
The answer should be 2.12 
5 0
3 years ago
Read 2 more answers
Write an equation of the line passing through the point (3, -1) and parallel to the line y=2/3x - 5. Show work
alex41 [277]

Answer:

The answer is: y = 2/3x - 3

Step-by-step explanation:

Given point: (3, -1)

Given equation: y = 2/3x - 5, which is in the form y = mx + b where m is the slope and b is the y intercept.

Parallel lines have the same slope. Use the point slope form of the equation with the point (3, -1) and substitute:

y - y1 = m(x - x1)

y - (-1) = 2/3(x - 3)

y + 1 = 2/3x - 6/3

y + 1 = 2/3x - 2

y = 2/3x - 3

Proof:

f(3) = 2/3(3) - 3

= 6/3 - 3

= 2 - 3

= -1, giving the point (3, -1)

Hope this helps! Have an Awesome Day!!  :-)

6 0
3 years ago
On its first visit to the vet, Emma's kitten weighed 30 ounces. On its second visit, the kitten had gained 8 ounces. On its thir
vodomira [7]

Answer: 14.6 % increase

Step-by-step explanation: 44 divided by 30 = 1.46

To decimal = 14.6 percent

6 0
3 years ago
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