3 years ago

What is 0.25 (repeating 5) as a fraction?

Mathematics

1 answer:

Vanyuwa [196]3 years ago

4 0

1/2 or 2/4 pretty sure

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5/6 (24x - 18) + 5<br><br> Simplify

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4 years ago

Giải phương trình:<br> sin*2x+sinxx.cox=1/2

creativ13 [48]

Answer:

x = 9.47 degrees ( in first quadrant.

Step-by-step explanation:

sin2x + sinx cos x = 1/2

Now sinx cos x = 1/2sin2x so:

3/2sin2x = 1/2

sin2x = 1/2 / 3/2

sin2x = 1/2 * 2/3 = 1/3

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3 years ago

Solve the equation: 5^(3t)=13

jonny [76]

Answer:

0.531 (3 s.f.)

Step-by-step explanation:

${5}^{3t} = 13 \\ lg {5}^{3t} = lg13 \: \: \: \: (log \: both \: sides) \\ 3t(lg5) = lg13 \\ 3t = \frac{lg13}{lg5} \\ t = \frac{1}{3} ( \frac{lg13}{lg5} ) \\ t = \frac{lg13}{3lg5} \\ t = 0.531 \: (3 \: s.f.)$

Power rule is used for the 3rd step.

4 0

4 years ago

Which expression is equivalent to (3 + 5i)2?

castortr0y [4]

Answer:

Step-by-step explanation:

-16+30i

5 0

3 years ago

Use the quadratic formula to find both solutions to the quadratic equation given below 4x^2+3x-1=0

Aneli [31]

4x² + 3x - 1 = 0
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Quadratic formula:
x = $\frac{-b +/- \sqrt{b^{2} -4ac} }{2a} = \frac{-3 +/- \sqrt{3^{2} - 4(4)(-1)}}{2(4)}$
= $\frac{-3 +/- \sqrt{9 + 16}}{8} = \frac{-3 +/- \sqrt{25}}{8} = \frac{-3 +/- 5}{8}$
= $\frac{-3 + 5}{8}$ , $\frac{-3 - 5}{8}$
= $\frac{2}{8}$ , $\frac{-8}{8}$
= $\frac{1}{4}$ , -1

7 0

3 years ago

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What is 0.25 (repeating 5) as a fraction?​

What is 0.25 (repeating 5) as a fraction?