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3 years ago

What is 7.504-2.3792 rounded to the hundred

Mathematics

1 answer:

Liula [17]3 years ago

8 0

Answer:

Step-by-step explanation:

First what we have to do is subtract 7.504 and 2.3792
7.504 - 2.3792 = 5.1248
then what we do is
find the number in the number in the hundreds place 0 and look one place to the to the right for the rounding digit 0.
Round up if this number is greater than or equal to 5 and round down if less than five.

Since zero is less than five we would round down

so our answer is zero

Hope this helps

Hope u get it right

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4 years ago

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Step-by-step explanation:

Factor by grouping

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We can easily see that the first two zeroes are $x=-1$ and $x=-7$ , however, the third zero will need the help of the quadratic formula:

$0=5x^2-2x-1\\\\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\ \\x=\frac{-(-2)\pm\sqrt{(-2)^2-4(5)(-1)}}{2(5)}\\\\x=\frac{2\pm\sqrt{4+20}}{10}\\ \\x=\frac{2\pm\sqrt{24}}{10}\\ \\x=\frac{2\pm2\sqrt{6}}{10}\\ \\x=\frac{2}{10}\pm\frac{2\sqrt{6}}{10}\\ \\x=\frac{1}{5}\pm\frac{\sqrt{6}}{5}\\\\x_1\approx0.689898\\\\x_2\approx-0.289898$

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