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Nataly [62]
3 years ago
11

8 The square of a number is 12 less than 7 times the number. What is the number?

Mathematics
1 answer:
Alex3 years ago
8 0
7x^2 - 12 = 0
7x^2 = 12 | : 7
x^2 = 12/7 | sqrt
x = sqrt(12/7)
x = sqrt(84) / 7
x = 2sqrt(21) / 7
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adelina 88 [10]

Answer:

Given  

if p:q=2/3:3 and p:r=3/4:1/2, calculate the ratio p:q:r giving your answer in its simplest form

We need to find the ratio p:q:r

Given p:q = 2/3 : 3 = 2/3 / 3  = 2/9

and p : r = 3/4 : 1/2 = 3/4 / 1/2  = 3/2  

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We need to make p equal numerators so we get

p/q = 2/9 x 3/3 = 6/27 and

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6 0
3 years ago
-27 Irrational or rational
shutvik [7]

Answer:

rational

Step-by-step explanation:

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6 0
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Read 2 more answers
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sladkih [1.3K]
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ryzh [129]

Answer:

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Step-by-step explanation:

let Arya be A, Robot be B and Combined time be t

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