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love history [14]
3 years ago
8

Finding the length of each side

Mathematics
1 answer:
Fiesta28 [93]3 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

The perimeter is the sum of the 3 sides of the triangle.

Sum the sides and equate to 54, that is

3x + 4x + 5x = 54, that is

12x = 54 ( divide both sides by 12 )

x = 4.5

Thus

AB = 3x = 3 × 4.5 = 13.5 in

BC = 4x = 4 × 4.5 = 18 in

AC = 5x = 5 × 4.5 = 22.5 in

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a rectangular prism has a top area of 20ft square and a height of 5ft. what is the volume of this rectangular prism
krok68 [10]
V = Bh
.. = (20 ft^2)*(5 ft)
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The volume of this rectangular prism is 100 ft^3.
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3 years ago
What is the slope of the line below?
icang [17]

Answer:

slope is 2

Step-by-step explanation:

8-2/4-2

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3 years ago
What is the minimum value?
professor190 [17]
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2 years ago
If the dimensions of a rectangular prism are 39 mm × 12 mm × 15 mm, then what is the surface area
grin007 [14]

Answer:

\huge\boxed{SA=2466\ (mm^2)}

Step-by-step explanation:

The formula of a Surface Area of a rectangular prisms:

SA=2(lw+lh+wh)

<em>l</em><em> - length</em>

<em>w</em><em> - width</em>

<em>h</em><em> - height</em>

<em />

We have:

l=39mm;\ w=12mm;\ h=15mm

Substitute:

SA=2\bigg((39)(12)+(39)(15)+(12)(15)\bigg)\\\\SA=2(468+585+180)\\\\SA=2(1233)\\\\SA=2466\ (mm^2)

5 0
3 years ago
Help pleasee
patriot [66]

Answer:

2 + 2 + 2 + 4 + 4 + 4= 20          3 apples and 4 oranges

Step-by-step explanation:

20 - 4 = 16     16 - 4 =      14 - 2 = 12      12 - 4 = 8       8 - 4 = 4        4 - 2 = 2

1 orange   2 oranges     1 apple         3 oranges           4 oranges      2 apples

and 2 - 2 = 0

     3 apples

5 0
3 years ago
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