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Afina-wow [57]
3 years ago
14

Landon was taking a math test. He finished 1/2 of the test in 3/5 of an hour. How much of the test will he have done in one hour

if he keeps the same pace?
Mathematics
1 answer:
timama [110]3 years ago
7 0

Answer:

\frac{5}{6}\ of\ the \ test

Step-by-step explanation:

we know that

Landon finished 1/2 of the test in 3/5 of an hour

so

by proportion

Find out how much of the test will he have done in one hour

\frac{(1/2)}{(3/5)}\frac{test}{hours} =\frac{x}{1}\frac{test}{hour}\\ \\x=(1/2)*(5/3)\\ \\x=\frac{5}{6}\ of\ the \ test

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We are given :

\sqrt{4x^{2}-20x+25}

Step 1: factor the part inside square root

The function given inside square root is of quadratic form.

So let us try to factorise it using AC method.

Here A*C = 4*25 = 100

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the two factors are -10 and -10.

Rewriting the function :

4x^{2} -20x+25

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Step 2:

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