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ziro4ka [17]
3 years ago
15

Is the expression 3x + 2x - 4 ​ in simplest form? Explain.

Mathematics
2 answers:
viva [34]3 years ago
7 0

Answer:

No

Step-by-step explanation:

you have to subtract 2x from 3x, so you have just x( you don't need the one in front of it)

So the answer would be ( x-4)

Hope that this helps you and have a great day :)

Snezhnost [94]3 years ago
5 0

Answer:

No

Step-by-step explanation:

No, this expression is not in simplest form

3x +2x -4

We still have like terms that can be combined.

The like terms in this case are the terms with variables, 3x and 2x

They can be added together

(3x+2x)-4

5x-4

5x-4 is the expression in simplest form

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Helen has 48 cubic inches of clay to make a solid square right pyramid with a base edge measuring 6 inches. Which is the slant h
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Answer: 5 inches


Step-by-step explanation:

Given: Volume of clay = 48 cubic inches

If we make a solid square right pyramid with a base edge a= 6 inches.

Then its base area = a^2=6^2=36\ inches^2

we know that volume of square right pyramid=\frac{1}{3}\times\ a^2h

Therefore, volume of square right pyramid made by all of clay=\frac{1}{3}\times\ a^2h=48 cubic inches

\Rightarrow\frac{1}{3}\times\ (36)\times\ h=48\\\Rightarrow12h=48\\\Rightarrow\ h=4\ inches.....\text{[Divide 12 on both sides]}

Now, slant height l=\sqrt{(\frac{a}{2})^2+h^2}

\\\Rightarrow\ l=\sqrt{3^2+4^2}\\\Rightarrow\ l=\sqrt{9+16}\\\rightarrow\ l=\sqrt{25}\\\Rightarrow\ l=5

The slant height of the pyramid if Helen uses all the clay=5 inches

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3 years ago
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