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3 years ago

How do you find the answer for 3a-1? What's the answer? What's the equation you write down?

Mathematics

2 answers:

Varvara68 [4.7K]3 years ago

5 0

Answer:

The question is not correct ma'am

valentina_108 [34]3 years ago

3 0

Answer:

It is impossible to know the solution of this expression unless you know how much a is worth or some information on the other side of the equation. If you don't know what I mean then I'll explain it a bit more. An equation is 2 expressions that are equal to each other but here I don't know anything about the other side of the equation. For example, an equation like this: 3a - 15= 6 is solvable because I know enough information to solve this.

3a - 15 + 15= 6 + 15

3a = 21

Therefore I can now find out what the answer is but your equation does not have enough information for it to be solved.

Step-by-step explanation:

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3 years ago

I need help with Number 5

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2 years ago

If the mass of a material is 49 grams and the volume of the material is 7 cm^3, what would the density of the material be?

inysia [295]

The equation for density is:
$density = \frac{mass}{volume}$

To help you remember - my teacher told us to remember "We <span>♡ density," and the heart stands for </span> $\frac{m}{v}$ , or $\frac{mass}{volume}$ . Cheesy, but it works!<span>
</span>
Back to the problem:
We know the mass if 49g and the volume is 7 $cm^{3}$ , so plug these values into the equation for density:
$density = \frac{mass}{volume}\\
density = \frac{49\:g}{7\:cm^{3}} \\
density = 7\:g/cm^{3}$

Answer: The density is 7 g/ $cm^{3}$

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3 years ago