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enyata [817]
2 years ago
7

If (3, -2) is a solution of the linear equation 3x – py – 7 =0, then find the value of p.

Mathematics
1 answer:
Ksenya-84 [330]2 years ago
6 0

Answer:

-1

Step-by-step explanation:

So to solve this, it tells you that (3, -2) is a solution so you can substitute x = 3 and y = -2 into the equation which would look like this:

3*3-p*-2-7 = 0

Then, you solve the equation for p:

first, simplify the left side

9 +2p-7=0\\2+2p=0

subtract 2 from both sides

2p=-2

divide both sides by 2

p=-1

Now, you have p = -1!

hope that makes sense :D

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Enter your answer and show all the steps that you use to solve this problem in the space provided.
shutvik [7]

Answer:

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(A)

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6 0
3 years ago
A sequence is defined by f(0) = -20, f(n) = f(n-1) - 5 forn &gt; 1.
bulgar [2K]

Answer:

1. Proved down

2. proved down

3. f(10) = -20 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5

Step-by-step explanation:

Let us explain how to solve the question

∵ f(0) = -20, f(n) = f(n - 1) - 5 for n > 1

→ That means we have an arithmetic sequence with constant

   difference -5 and first term -20

1. → f(1) means we need to find the second term, which equal the

      term - 5

∵ f(1) means n = 1

∴ f(1) = f(1 - 1) - 5

∴ f(1) = f(0) - 5

∵ f(0) = -20

∴ f(1) = -20 - 5 → Proved

2. → f(3) means we need to find the third term, which equal the

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∵ f(3) means n = 3

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∵ n = 10

∴ There are ten (-5)

∴ f(10) = -20 - 5(10)

∴ f(10) = -20 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 → Proved

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vodomira [7]
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hope this helps
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