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iVinArrow [24]
2 years ago
14

Which ordered pair is the solution to the system of linear equations y = -7x + 2 and y = 9x - 14?

Mathematics
2 answers:
ser-zykov [4K]2 years ago
6 0

Answer:

the answer is (1,-5) I just took the quiz



lisabon 2012 [21]2 years ago
4 0
Y = -7x + 2
y = 9x - 14

-7x + 2 = 9x - 14
14 + 2 = 9x + 7x
16 = 16x
1 = x

y = -7x + 2
y = -7(1) + 2
y = -7 + 2
y = -5

solution is : (1,-5) <==
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A quantity with an initial value of 6200 decays continuously at a rate of 5.5% per month. What is the value of the quantity afte
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Answer:

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Step-by-step explanation:

Given that the initial quantity, Q= 6200

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So, the value of quantity after 1 month, q_1 = Q- r \times Q

q_1 = Q(1-r)\cdots(i)

The value of quantity after 2 months, q_2 = q_1- r \times q_1

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From equation (i)

q_2=Q(1-r)(1-r)  \\\\q_2=Q(1-r)^2\cdots(ii)

The value of quantity after 3 months, q_3 = q_2- r \times q_2

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From equation (ii)

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Similarly, the value of quantity after n months,

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As 4 years = 48 months, so puttion n=48 to get the value of quantity after 4 years, we have,

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Putting Q=6200 and r=5.5%=0.055, we have

q_{48}=6200(1-0.055)^{48} \\\\q_{48}=410.32

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