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sweet-ann [11.9K]
3 years ago
14

Add -3/8 + 5/4 Simplify your answer. Type a fraction or an interger.

Mathematics
2 answers:
sdas [7]3 years ago
7 0
Beautiful your answer is 7/8
Anton [14]3 years ago
5 0

5/4 - 3/8 = 5*2/4*2 - 3/8 = 10/8 - 3/8= 7/8

The final answer is 7/8 in fraction form. Notice the second step. It brings the 5/4 into eighths by multiplying 5*2 and 4*2. This is done so that the 3/8 and 5/4 have identical denominators.

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The square below represents one whole.<br><br> What percent is represented by the shaded area?
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Please explain to me how 3.2÷4=0.8 is done
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IgorLugansk [536]
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8 0
3 years ago
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Please help math
Naddika [18.5K]
   
\displaystyle\\&#10;15(2a - 2) = 5(a^2 -1) \\  \\ &#10;30a - 30 = 5a^2-5\\\\&#10;-5a^2 + 30a -30 + 5 =0\\\\&#10;-5a^2 + 30a -25 =0 ~~~~~\Big| \times (-1) \\\\&#10;5a^2 - 30a +25 = 0~~~~~\Big| : 5 \\\\&#10;a^2 - 6a +5 = 0 \\  \\ &#10;a_{12}= \frac{-b\pm \sqrt{b^2-4ac}}{2a}= \frac{6\pm \sqrt{36-20}}{2}= \frac{6\pm \sqrt{16}}{2}=\frac{6\pm 4}{2}= \boxed{3\pm 2} \\  \\ &#10;a_1 = 3+ 2 = \boxed{5}\\\\&#10;a_2 = 3-2 = \boxed{1}



8 0
3 years ago
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