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3 years ago

8

Explain how you can use place value to describe how 0.05 and 0.005 compare

2 answers:

Flauer [41]3 years ago

8 0

<span>0.05 is ten times greater than 0.005</span>

Maksim231197 [3]3 years ago

4 0

0.05 is in the hundredths place
0.005 is in the thousandths place

hope this helps

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Marina86 [1]

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The line $y = 3$ intersects the graph of $y = 4x^2 + x - 1$ at the points $A$ and $B$. The distance between $A$ and $B$ can be w

raketka [301]

Answer:

61

Step-by-step explanation:

Let's find the points $A$ and $B$ .

We know that the $y$ -coordinates of both are $3$ .

So let's first solve:

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Subtract 3 on both sides:

$0=4x^2+x-1-3$

Simplify:

$0=4x^2+x-4$

I'm going to use the quadratic formula, $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ , to solve.

We must first compare to the quadratic equation, $ax^2+bx+c=0$ .

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Since the distance between the points $A$ and $B$ is horizontal. We know this because they share the same $y-coordinate$ .This means we just need to find the positive difference between the $x$ -values we found for the points of $A$ and $B$ .

So that is, the distance between $A$ and $B$ is:

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$\frac{-1+\sqrt{65}+1+\sqrt{65}}{8}$

$\frac{2\sqrt{65}}{8}$

$\frac{\sqrt{65}}{4}$

If we compare this to $\frac{\sqrt{m}}{n}$ , we should see that:

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2 years ago

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I don't quite understand this..

weqwewe [10]

There it is in the image. Hope it helps. You don't need the negative y- axis.

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3 years ago