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statuscvo [17]
3 years ago
12

Carrie spent

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0
Hbjjmkuyhtfdeswctcyjiiolytgudegumjnmi6
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What the vaule of x in the equation 3x-4y=65, when y =4
lana [24]

Answer: x=27


Step-by-step explanation:

3x-4(4)=65

3x-16=65

3x=65+16

3x=81

3x/3=81/3

X=27



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if you only had time to shop for these ingredients at one of the stores,which one would you go to and why?
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Suppose you received a job offer with a starting salary of $48,500 per year and a guaranteed raise of $1200 per year. Find the n
LuckyWell [14K]

Answer:

  • 7 years

Step-by-step explanation:

<u>This is going to be an arithmetic progression:</u>

  • 48500, 48500 + 1200, 48500 + 1200*2, ...

<u>So the first term is </u>

  • a₁ = 48500

<u>and the common difference is </u>

  • d = 1200

<u>Sum of AP is:</u>

  • S = (a₁ + aₙ)*n/2 = (2a₁ + (n - 1)d)*n/2

<u>Substitute and solve for n:</u>

  • (2*48500 + (n - 1)*1200)*n/2 = 321000
  • (97000 + 1200n - 1200)n = 642000
  • 1200n² + 95800n - 642000 = 0
  • 6n² + 479n - 3210 = 0

<u>Solving we get a positive root of:</u>

  • n ≈ 6.21 and it rounds up to 7 years

3 0
3 years ago
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