2 years ago

I really need help please

Mathematics

1 answer:

anastassius [24]2 years ago

6 0

9514 1404 393

Answer:

Step-by-step explanation:

The minimum number required is the least common multiple (LCM) of 15 and 4. The numbers 15 and 4 have no common factors, so their LCM is their product.

15×4 = 60 strands are required

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The square of a positive number is equal to its triple added to 28. What is this number?

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hi brainly user! ૮₍ ˃ ⤙ ˂ ₎ა

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$\huge{ \rm{Answer:}}$

The roots of the equation are 7 and -4, because 7 - 4 = 3 and 7. - 4 = -28

Step-by-step explanation:

The positive number is equal to 7.

Assuming that the number is equal to "x" we have:

$\begin{gathered}x^2 = 3x + 28\\\\x^2 - 3x - 28 = 0\\\\a = 1\\\\b = -3\\\\c = -28\\\end{gathered}$

By the sum and product method, we have:

$\begin{gathered}S = -b / a\\\\S = -(-3) / 1\\\\S = 3\\\\\end{gathered}$

$\begin{gathered}P= c / a\\\\P = 28 / 1\\\\P = 28\\\\\end{gathered}$

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<span>(x-2/3)+(1/60)=(5/6)
x-2/3= 5/6 - 1/60
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