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Dmitry [639]
3 years ago
12

P varies inversely with x. If P = 7 when x = 8, find the value of P when x = 7.

Mathematics
1 answer:
inna [77]3 years ago
3 0

Answer:

P = 8

Step-by-step explanation:

Given that P varies inversely with x then the equation relating them is

P = \frac{k}{x} ← k is the constant of variation

To find k use the condition P = 7 when x = 8 , then

7 = \frac{k}{8} ( multiply both sides by 8 )

56 = k

P = \frac{56}{x} ← equation of variation

When x = 7 , then

P = \frac{56}{7} = 8

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Murtha has decided to start a pebble collection. She collects one pebble the first day and two pebbles on the second day. On eac
Musya8 [376]

Answer:

78

Step-by-step explanation:

Given that:

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n = nth day

At the end of the 12th day;

Tn = a + (n - 1)d

T(12) = 1 + (12 - 1) 1

T(12) = 1 + 11

T(12) = 12

Appling the sun if arithmetic progression formula : Sum of AP:

n/2 (a + Tn)

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12/2 (1 + 12)

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4 0
3 years ago
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kodGreya [7K]

Hey there!

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3 years ago
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Rus_ich [418]

Answer:

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Step-by-step explanation:

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3 years ago
What is the value of x in the figure above? ^^
Zielflug [23.3K]
First solve for the other angles.
You know one angle is 15º.
The one across from it is also 15º since it is a vertical angle to the known 15º angle.
Both of those together gets 30º.
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Do the same for the 15x angle.
The one under/across to it is a vertical angle so is also 15xº.
Now you are left with 30xº = 330.
Just divide now.
330 / 30 = 11
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Checking your work:
15x = 165
15x = 165
15
15
Those are the angles.
Add those numbers together and make sure it adds up to 360º.
165 + 165 + 15 + 15 = 360
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7 0
3 years ago
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nexus9112 [7]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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