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Ahat [919]
3 years ago
14

On a blueprint, the scale says that 2 cm represents 3 m. What is the actual length of a wall if its measurement on the blueprint

is 7 cm?
Mathematics
2 answers:
VashaNatasha [74]3 years ago
7 0

Answer:

10.5 metres

Step-by-step explanation:

2 cm is equal to 3m

1 cm is equal to 1.5 m

7 cm is equal to 1.5 x 7 m which is 10.5 metres.

Leokris [45]3 years ago
4 0

Answer:

The actual length of the wall is 10.5 m

Step-by-step explanation:

Write and solve an equation of ratios to answer this question:

2 cm       3 m

--------- = ---------

7 cm         L

Solve this for L by inverting both sides:  

 7cm          L

---------- = --------

  2 cm      3 m

and then multiplying both sides by 3m:

21

----- = L

 2

The actual length of the wall is 10.5 m

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blondinia [14]

Answer:

2.72 inches

Step-by-step explanation:

1.4/1.12 = 1.25

3.4/1.25 = 2.72

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2 years ago
Solve for x 3x-1=9x+2
ANEK [815]
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3 years ago
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Please help *THIS IS ON PERSONAL FINANCIAL LITERACY "​
Crank

Answer:

I think the answer is $56,600

Step-by-step explanation:

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7 0
3 years ago
The area of a rectangle is 66 ft2, and the length of the rectangle is 1 ft more than twice the width. Find the dimensions of the
umka21 [38]
This is probably way overcomplicated but i cant remember how to do it
w = n
l = 2n+1
w*l = 66
n(2n+1) = 66
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3 0
3 years ago
"Rebecca walks 100 feet in a straight line. She then turns 20 degrees to her left and walks another 100 feet, and then turns 20
iragen [17]

Answer:

1,800 ft

Step-by-step explanation:

Rebecca will walk in the pattern of a regular polygon with 'n' sides and internal angles of 160 degrees (180 at a straight line - 20 degrees from each turn).

The equation that describes the internal angle of a regular polygon is:

A = \frac{(n-2)*180}{n}

For A = 160 degrees:

160n=(n-2)*180\\(180-160)n=360\\n=18\ sides

If each side is 100 ft long, the total distance that Rebecca has walked is:

d = 18*100\\d=1,800\ ft

She walked 1,800 ft.

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3 years ago
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