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pogonyaev
3 years ago
6

X =2y - 4 x + 5y = -66 what is the x - value of the solution to this system of equation

Mathematics
1 answer:
stich3 [128]3 years ago
3 0

Answer:x=-8 and y=-2

Step-by-step explanation:plug in for x.7(2y-4)+5y=6-6614y-28+5y=-6619y-28+-6619y=-38y=-2put it back in.

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What is 5d - 10 = 20​
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3 years ago
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4 0
3 years ago
What are the first three terms of the sequence represented by the recursive formula
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Answer: B. 0.25, 3.75, 5.2

Step-by-step explanation:

Since, the given sequence, a_n= n^2 -a_{n-1}

And, a_5=14\frac{1}{4}

On substituting n=5 in the given recursive formula,

We get, a_5=5^2-a_{5-1}\implies a_5=25-a_4\implies 14\frac{1}{4}= 25-a_4\implies a_4=10\frac{3}{4}

For, n=4 a_4=4^2-a_{4-1}\implies a_4=16-a_3\implies 10\frac{3}{4}= 16-a_3\implies a_3=5\frac{1}{4}\implies a_3=5.25

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Thus, First second and third terms are,

a_1=0.25, a_2=3.75 and  a_3=5.25.

5 0
3 years ago
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