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sergey [27]
3 years ago
7

How do i write this proof?

Mathematics
1 answer:
storchak [24]3 years ago
6 0
It is a rhombus because: 
• The figure has four sides
• The acute angles are equal and opposite each other
• The obtuse angles are equal and opposite each other
• The figure is a parallelogram
Hope this helps!
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Given the system of equations, what is the x-coordinate of the solution?
Nimfa-mama [501]
Answer: Choice C) -11

-----------------------------------

Explanation:

The first equation given is y = 3 - 1/2x
In other words, y is the same as 3 - 1/2x. 
We can replace y in the second equation with 3 - 1/2x
This is known as substitution (think of a substitute teacher who is a temporary replacement for your teacher)

Doing this leads to...
3x+4y = 1
3x+4*y = 1
3x+4*( y ) = 1
3x+4*( 3 - 1/2x ) = 1 <<--- y has been replaced with 3-1/2x
3x+4*(3) +4*(-1/2x) = 1
3x+12-2x = 1
3x-2x+12 = 1
x+12 = 1
x+12-12 = 1-12 <<-- subtracting 12 from both sides
x = -11
Which is why the answer is choice C) -11
6 0
3 years ago
Read 2 more answers
Guys help me solve this plzzz:(((;;(;;;((;
Maru [420]

Answer:

It should be 60 degrees

correct me if wrong but since it's supplementary, you subtract 155 - 35 then from 180 and you get 60

Im not 100% about this tho but like 75% sure

3 0
3 years ago
Please hurry I need this fast
erastovalidia [21]
I think it’s 20




Hope this helps
6 0
3 years ago
Helpppp please ! tytyy
Vladimir [108]
The answer is B, the answer is 9,318,000= 9.318•10 to the 6th power
5 0
3 years ago
Read 2 more answers
(–2) + 6 + 1 = 1 + 6 + (–2) =
Fudgin [204]

Answer:

5=5

Step-by-step explanation:

6 0
3 years ago
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