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2 years ago

15

What fraction of an hour is 5 minutes in its lowest terms ?

2 answers:

ollegr [7]2 years ago

7 0

5/60
is the correct answer!

jekas [21]2 years ago

3 0

5/60
= 1/12

60minute = 1hour

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If Joan read 75 pages in 4 hours how long will it take her to read 250 pages

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Which is greater 3 decimeters or 30 centimeters

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Find the slope of a line perpendicular to each given line.<br><br> 7) y = 5/2x - 3

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1 year ago

Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,

Tresset [83]

Answer:

$\boxed{y=2x^2+4x-7}$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

We substitute $(-4,9)$ into the equation to obtain;

$9=a(-4)^2+b(-4)+c$

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We substitute $(0,-7)$ to obtain;

$-7=a(0)^2+b(0)^2+c$

$\Rightarrow c=-7---(2)$

We finally substitute $(1,-1)$ to obtain;

$-1=a(1)^2+b(1)^2+c$

$\Rightarrow -1=a+b+c---(3)$

We put equation (2) into equation (1) to get;

$9=16a-4b-7$

$16a-4b=16$

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We add equation (4) and (5) to get;

$4a+a=6+4$

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$\Rightarrow a=2$

We put $a=2$ into equation (5) to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The reqiured quadratic function is

$y=2x^2+4x-7$

7 0

2 years ago