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seraphim [82]
3 years ago
8

Help i give 100 points litaraly 7/8 - 5/8 =

Mathematics
2 answers:
adell [148]3 years ago
7 0

Answer:

The answer is 1/4

Step-by-step explanation:

The answer is 1/4 because

7/8-5 /8

= (7 × 8) - (5 × 8) /8 × 8

= 16/64

= 16 ÷ 16/64 ÷ 16

= 1/4

I hope this helped you.

Bond [772]3 years ago
3 0

Answer:

The answer is \frac{1}{4} .

Step-by-step explanation:

Since both fractions have a common denominator of 8, you can simply subtract 7-5 in the numerator.

\frac{7}{8} - \frac{5}{8} = \frac{2}{8}

Simplify \frac{2}{8} by dividing 2 into the numerator and denominator.

\frac{2/2}{8/2} = \frac{1}{4}

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Yuri thinks that 3/4 is a root of the following function. q(x) = 6x3 + 19x2 – 15x – 28 Explain to Yuri why 3/4 cannot be a root.
k0ka [10]

Answer:

Yuri is not correct.

Step-by-step explanation:

Given expression is q(x) = 6x³ + 19x² - 15x - 28

If 'a' is a root of the given function, then by substituting x = a in the expression, q(a) = 0

Similarly, for x = \frac{3}{4},

q(\frac{3}{4})=6(\frac{3}{4})^3+19(\frac{3}{4})^2-15(\frac{3}{4})-28

       = 6(\frac{27}{64})+19(\frac{9}{16})-15(\frac{3}{4})-28

       = (\frac{162}{64})+(\frac{171}{16})-(\frac{45}{4})-28

       = (\frac{162}{64})+(\frac{684}{64})-(\frac{720}{64})-\frac{1792}{64}

       = -\frac{1666}{64}

       = -\frac{833}{32} ≠ 0

Therefore, Yuri is not correct. x = \frac{3}{4} can not be a root of the given expression.

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Answer:

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Step-by-step explanation:

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