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zheka24 [161]
3 years ago
8

What is y= -2/5x-2 y=-4

Mathematics
1 answer:
MaRussiya [10]3 years ago
3 0

Answer:

y=−4 and x=5

Step-by-step explanation:

y=−4;y=(

(−2)

5

)(x)−2

Step: Solvey=−4for y:

Step: Substitute−4foryiny=

−2

5

x−2:

y=

−2

5

x−2

−4=

−2

5

x−2

−4+

2

5

x=

−2

5

x−2+

2

5

x(Add 2/5x to both sides)

2

5

x−4=−2

2

5

x−4+4=−2+4(Add 4 to both sides)

2

5

x=2

2

5

x

2

5

=

2

2

5

(Divide both sides by 2/5)

x=5

Answer:

y=−4 and x=5

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d1i1m1o1n [39]

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5 0
3 years ago
Read 2 more answers
At noon joyce drove to the lake at 30 mph, but she made the long walk back home at 4 mph. how many hours did she walk if she was
lina2011 [118]
By definition we have the following equation:
 t = d / v
 Where,
 t: time
 d: distance
 v: speed
 For this case we have:
 d / 30 + d / 4 = 17
 Rewriting we have:
 2d + 15d = 17 (60)
 17d = 17 (60)
 d = 60 mi
 Then, the walking time is
 t = d / v
 t = 60/4
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4 0
3 years ago
Consider a sequence defined by the recursive rule f(1) = 15; f(n)=f(n - 1) - 6 for n 2. Choose True or
Shkiper50 [21]

Answer:

The second term of the sequence is 8  False ⇒ B

The third term of the sequence is 3  True ⇒ A

The fourth term of the sequence is -3  True ⇒ A

Step-by-step explanation:

The form of the recursive rule is:

f(1) = first term; f(n) = f(n - 1) + d, where

  • f(1) is the first term
  • f(n) is the nth term
  • f(n - 1) is the term before the nth term
  • d is the common difference

∵ f(1) = 15, f(n) = f(n - 1) - 6 for n ≥ 2

∴ The first term = 15

∴ d = -6

let us find the 2nd, 3rd, and 4th terms

∵ n = 2

∴ f(2) = f(1) - 6

∵ f(1) = 15

∴ f(2) = 15 - 6 = 9

∴ The second term is 9

∴ The second term of the sequence is 8  False

∵ n = 3

∴ f(3) = f(2) - 6

∵ f(2) = 9

∴ f(3) = 9 - 6 = 3

∴ The third term is 3

∴ The third term of the sequence is 3 True

∵ n = 4

∴ f(4) = f(3) - 6

∵ f(3) = 3

∴ f(4) = 3 - 6 = -3

∴ The fourth term is -3

∴ The fourth term of the sequence is -3 True

5 0
3 years ago
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