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vaieri [72.5K]
3 years ago
13

How much wrapping paper do you need to completely cover a rectangular box that is 20 inches by 18 inches' by 2 inches?

Mathematics
1 answer:
NeTakaya3 years ago
5 0
720 !!!!!!!!!!!!!!!!!!!!!!!!!!!



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Which of the following statements about its area will be true? Please help asap
never [62]

Answer:

the fourth answer

Step-by-step explanation:

this is because 6 x 10 is 60, and is you multiply the height by 3 it gives you 3(6) x 10 which can also be written as 18 x 10 which is equal to 180

divide 180 by 60 which will give you 3, this shows you that the growth from the original area to the new area is 3 times, so the ratio is 3:1

6 0
3 years ago
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Solve the following rational equation plz help!!
Yuri [45]

Answer:

x = \frac{9}{4}

Step-by-step explanation:

Given

\frac{4x}{x+1} - \frac{5}{x} = \frac{4}{x^2+x} ← factor denominator

\frac{4x}{x+1} - \frac{5}{x} = \frac{4}{x(x+1)}

[ x ≠ 0, x ≠ - 1 as these would make the terms undefined ]

Multiply through by x(x + 1)

4x² - 5(x + 1) = 4

4x² - 5x - 4 = 4 ( subtract 4 from both sides )

4x² - 5x - 9 = 0 ← in standard form

(x + 1)(4x - 9) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

4x - 9 = 0 ⇒ 4x = 9 ⇒ x = \frac{9}{4}

However, x ≠ - 1 for reason given above, then

solution is x = \frac{9}{4}

4 0
3 years ago
Please help! <br> I really don’t understand this
qwelly [4]

Answer:

12

Step-by-step explanation:

Rotation doesn't alter the lengths.

6×2 = 12

4 0
3 years ago
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A rectangle has a length x centimeters and a width that is equal to half its length. The perimeter of the rectangle is 50 centim
dusya [7]

Answer:

Step-by-step explanation:

Let x = length

Then width = (1/2)x

Perimeter = 2(length) + 2(width) = 54

                  length + width = 27

So, x + (1/2)x = 27

           (3/2)x = 27

                 x = 27(2/3) = 18     (1/2)x = 9

Answer:  length = 18 cm and width = 9 cm

3 0
3 years ago
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Write the equation of the line passing through the point (−3,−4) that is perpendicular to y=8/3x+5.
KiRa [710]

Answer:

y = -3/8x -41/8

Step-by-step explanation:

Perpendicular lines intersect at 90° and their slopes are opposite reciprocals.

Therefore the slope changes from 8/3 to -3/8.

Now we must solve for the new y-intercept (b) by plugging in the given coordinate (-3,-4).

The result is b = -41/8 so our new equation is:

y = -3/8x -41/8

3 0
2 years ago
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