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3 years ago

3/4 − 2/5 in a fraction

Mathematics

2 answers:

Dennis_Churaev [7]3 years ago

6 0

Answer:

7/10

Step-by-step explanation:

Rzqust [24]3 years ago

4 0

Answer:

0.35

Step-by-step:

$\frac{3}{4} - \frac{2}{5} = \frac{3 \times 5}{4 \times 5} - \frac{2 \times 4}{5 \times 4} = \frac{15}{20} - \frac{8}{20} = \frac{15 - 8}{20} = \frac{7}{20} = 0.35$

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In your own words describe how you would find the volume of a figure using unit cubes?

nirvana33 [79]

Answer:

Volume = length x width x height.

You only need to know one side to figure out the volume of a cube.

The units of measure for volume are cubic units.

Volume is in three dimensions.

You can multiply the sides in any order.

Which side you call length, width, or height doesn't matter.

4 0

2 years ago

Can someone please help me?

nataly862011 [7]

Answer:

Step-by-step explanation:

7⁴/ 7⁶ = 1/ 7⁶⁻⁴ = 1/7² = 1 /49 = 0.02

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4 years ago

Read 2 more answers

Match each equation to an equivalent equation written in slope-intercept form.

choli [55]

Answer:

In order down the left side, ...

y = 1/3x +2
y = 1/2x +3
y = 2x +6
y = -2x +3

Step-by-step explanation:

To put a linear equation in slope-intercept form, you solve for y, then simplify.

x -3y = -6

Subtract x and divide by -3:

y = 1/3x +2

2y -6 = x

Add 6 and divide by 2:

y = 1/2x +3

-x +(1/2)y = 3

Add x and multiply by 2:

y = 2x +6

2x +y = 3

Subtract 2x:

y = -2x +3

_____

Comment on the algebra

Note that when we say add, subtract, multiply, or divide by something or other, we mean to do that to both sides of the equation. That is required by the properties of equality.

If you remember the rule: do the same thing to both sides of the equation, then algebra suddenly becomes much easier.