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Ghella [55]
3 years ago
5

Please help real quick...

Mathematics
2 answers:
Iteru [2.4K]3 years ago
7 0
5(W+6) is the answer.
Sever21 [200]3 years ago
3 0

w= 6.

Inverse operation of multiplication is division, and the other way around. The inverse operation of addition is subtraction, and the other way around.

5w= 5×w. Whenever you see two terms squished together like this or like 5 (w), you must multiply.

Whatever you do to one side of the equation (equal sign) you must do to the other.

To simplify this equation, you must separate the 5 from the w. To do this, you need to do the inverse operation. The inverse operation is division. To separate 5 from w, you must divide 5w by 5. This will give you 1w, which is equal to w. Now, do the same thing to the other side. 30 ÷ 5= 6. Now, your equation should look like:

w=6

You cannot simplify this anymore. Therefore, it is your answer.

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The length and width of a rectangular room are measured to be 3.955±0.005m. Calculate the area of the room and its uncertainty i
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Answer:

The area of the room and its uncertainty in square meters is:

15.642±0.040 m^2

Step-by-step explanation:

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Now we need to know the uncertainty, the uncertainty of a multiplication is:

\frac{δ_a}{|Area|} =\frac{δ_L}{|L|}+\frac{δ_W}{|W|} (1)

δ_A: Area uncertainty

δ_L: Length uncertainty

δ_W: Width uncertainty

A: Area of the room

L: Length

W: Width

Clearing the uncertainty of the area:

δ_A=(\frac{δ_x}{|x|}+\frac{δ_y}{|y|})*Area (2)

δ_A=(\frac{0.005}{|3.955|}+\frac{0.005}{|3.955|})*15.642 m^2

δ_A= 0.040 m^2

The area of the room and its uncertainty in square meters is:

15.642±0.040 m^2

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