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defon
2 years ago
13

What is the solution to this system of linear equations 2x+y=1 and 3x-y=-6

Mathematics
1 answer:
nikklg [1K]2 years ago
8 0
2x + y = 1
3x - y = -6
---------------add
5x = -5
x = -5/5
x = -1

2(-1) + y = 1
-2 + y = 1
y = 1 + 2
y = 3

solution is (-1,3)
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25x -5 + 32 = (when x = 3)
Ugo [173]

Answer:

102

Step-by-step explanation:

25 x 3 - 5 + 32

75 - 5 + 32

70 + 32

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4 0
3 years ago
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6/10

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2 years ago
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2) In a set of data that show a normal distribution the mean is 7.8 and the standard deviation is 1.7. What is the proportion of
abruzzese [7]
First, we get the z-score using formula:
z =( X - μ ) / σ

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6 0
3 years ago
Simplify each expression.<br>1) -8(k - 4)​
Lera25 [3.4K]

Answer:

<h2>-8(k - 4) = -8k + 32</h2>

Step-by-step explanation:

-8(k - 4)         <em>use the distributive property: a(b + c) = ab + ac</em>

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6 0
3 years ago
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What is the 12th term of the sequence 3,6,12,24....
Sati [7]
a_{0}=3

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r=2, a_{n}=2^{n-1}*3

plug in 12 for n:

a_{12}=2^{12-1}*3

a_{12}=2^{11}*3

a_{12}=2048*3

a_{12}=6144

The twelfth term in the sequence is 6144


 




7 0
3 years ago
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