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Rus_ich [418]
3 years ago
14

How could you use a number line to help assist in adding or subtracting rational numbers?

Mathematics
1 answer:
hichkok12 [17]3 years ago
7 0
One example of number line of rational numbers is shown below

To help with addition, for example, 0.1 + 0.3, you'd start from 0.1 on the number line and then hop on three lines to the right. You should end at 0.4 and that's the answer

To help with subtraction, you would have to 'hop back'.


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3 years ago
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xz_007 [3.2K]

Hi there!

\large\boxed{h = \frac{15x}{y}}

Recall the volume of a pyramid is:

V = 1/3(bh)

We are given the volume and side length of the base. Find the area of the base:

A = s²

A = (5xy²)² = 25x²y⁴

Plug in the solved for base:

125x³y³ = 1/3(25x²y⁴)h

To isolate for h, begin by multiplying both sides by 3:

375x³y³ = (25x²y⁴)h

Divide both sides by 25x²y⁴. Use the following exponent property:

xᵃ / xᵇ = xᵃ⁻ᵇ

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The height must be equal to:

h = \frac{15x}{y}

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