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Slav-nsk [51]
3 years ago
5

6. If linear combination is the method used to solve this system of equations, what is the result of the first step?

Mathematics
1 answer:
Lemur [1.5K]3 years ago
6 0

Answer:

the answer is B

Step-by-step explanation:

x + x = 2x

y - y = 0

6 + 2 = 8

2x = 8

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Ben is 4 times as old as Ishaan and is also 6 years older than Ishaan.
aleksklad [387]
Let x be the age of Ben and y be the age of Ishaan.
x= 4y... Equation (1)
x= y + 6... Equation (2)
Subtract the 2 equations
(1) - (2) : x-x= 4y - (y+ 6)
0 = 4y - y - 6
0 = 3y - 6
3y = 6
y = 2
So Ishaan is 2 years old
Substitute y = 2 in equation (1)
x = 4(2)
x = 8
So Ben is 8 years old and Ishaan is 2 years old.
4 0
4 years ago
The rate of depreciation dv / dt of a machine is inversely proportional to the square of t + 1, where v is the value of the mach
lukranit [14]
The solution for this problem is:
dV/dt = r/(t + 1)², V(0) = $500000, V(1) = $500000 - $200000 = $300000 
∫dV = r∫ 1/(t + 1)² dt 
V(t) = -r/(t + 1) + C 
500000 = -r/(0 + 1) + C 
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C = 300000, r = -100000 
V(t) = 100000/(t + 1) + 300000 
V(6) = 100000/(6+ 1) + 300000 
V(6) = 14285.7143 + 300000

V(6) = $314285.71
6 0
3 years ago
Help numbers 3 pleaaaaaassssseeee
Varvara68 [4.7K]
It is 2 4/5, 2 4/5 is 2.8, 4/5 is greater than 3/4
3 0
3 years ago
Read 2 more answers
I need help asap pleaseeee
lesantik [10]

Answer:

8

Step-by-step explanation:

401.92 divided by 16 = 25.12

25.12 divided by 3.14 is 8

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3 years ago
Is 10.78778777 a rational or irrational​ number
3241004551 [841]

Answer:

Im pretty sure its irrational

Step-by-step explanation:

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