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Fantom [35]
2 years ago
13

A bridge is 28 meters long. Find the length of a scale model if the scale is 1 cm = 5.5 meters. Round to the nearest tenth.

Mathematics
1 answer:
castortr0y [4]2 years ago
4 0
28m(cm/5.5m)=56/11 cm

≈5.1 cm  (to nearest tenth of a centimeter, or to nearest millimeter)
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The area of a trapezoid is 69.6 in2 and its altitude is 8.7 in. Find the perimeter of the trapezoid if the sum of its legs is eq
Murljashka [212]
To answer this, you will find the sum of the bases by using the area of a trapezoid formula:

A = 1/2 x h x (b1 + b2) - You will represent the area of the 2 bases as x,                                                  because it says the sum of the bases so this can be 
                                     written as 1 term, x
69.6 = 1/2 x 8.7 x (x);  solve for x
69.6 = 4.35x; divide both sides by 4.35
x = 16 in.

If 16 inches is the sum of the 2 bases and the sum of the legs, than you will double this answer to find the perimeter.

16 in x 2 = 32 inches

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7 0
3 years ago
Justin drew a scale drawing of a community college. The
melisa1 [442]

Answer:

36 centimeters

Step-by-step explanation:

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5 0
3 years ago
Which expressions are equivalent to 4b ?
aivan3 [116]

Answer:

They are b and c.

Step-by-step explanation:

Let's simplify each expression:

a. b+2 (b+2b)

= b + 2b + 4b = 7b.

b.  3b + b = 4b.

c. 2(2b) = 2 * 2b = 4b.

5 0
3 years ago
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Please help, I have no idea what it's asking :')
Andre45 [30]

the answer is step by step CFE

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