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AlekseyPX
3 years ago
6

X - y = 8 and -x + y = 4 solve the equation of linear equations by substitution​

Mathematics
1 answer:
ch4aika [34]3 years ago
7 0

Answer:

No solution

Step-by-step explanation:

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What combination of transformations is shown below?
scoray [572]

Answer:

Correct answer is <em>"reflection, then rotation".</em>

Step-by-step explanation:

The figure shows the following two operations:

1) Reflection through central horizontal line. (1 \to 2)

2) Rotation with center at the upper left corner of the reflected figure. (2 \to 3)

Therefore, correct answer is <em>"reflection, then rotation".</em>

7 0
2 years ago
Please help!!!! don't understand!!!
Talja [164]

I dont know, im working it out now, or im trying to

8 0
3 years ago
Please help me with this
Llana [10]
4 unknowns needs 4 equations. I'll call the unknown numbers a,b,c,d in that order left to right.

4 + a = b
a + b = c
b + c = d
c + d = 67

let's use substitution to get rid to combine equations and get rid of variables.
If a + b = c then a = c - b
4 + (c - b) = b
4 + c = 2b

If b + c = d then b = d - c
4 + c = 2(d - c)
4 + c = 2d - 2c
4 + 3c = 2d

then we have c + d = 67 so c = 67 - d

4 + 3(67 - d) = 2d
4 + 201 - 3d = 2d
205 = 5d
d = 41

Should be easy now, subtract backwards.

67 - 41 = 26
41 - 26 = 15
26 - 15 = 11
15 - 11 = 4

4, 11, 15, 26, 41, 67


3 0
3 years ago
What is the factorization of the trinomial below?
valkas [14]
B is the correct answer. hope this helped:)
6 0
2 years ago
Read 2 more answers
What is 9 to the of 3
MrRa [10]

Answer:

729

Step-by-step explanation:

8 0
2 years ago
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