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icang [17]
3 years ago
6

On a blueprint, a square with 20 meters per side was shown as a square with 12 centimeters per side. how long would a girder app

ear on the blueprint if the girder is actually 15 meters long?
Mathematics
1 answer:
Tanya [424]3 years ago
3 0
We know that

the  scale factor on the blueprint is-------> 12 cm/20 m------> 3 cm/5 m

if 3cm on a blueprint-------------> represent 5 m in the actual
 X cm---------------------------------> 15 m
X=15*3/5------>X=9 cm

the answer is
9 cm
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What is the value of x?​
Gwar [14]

Answer:

Step-by-step explanation:

First count the number of sides. There are 6 sides.

Now use the formula

(n - 2) * 180  To determine the total of all 6 angles.

(6 -2) * 180 =

4 * 180 = 720

Is that a 9 in x + 9 [lower left]? I'll assume so. Edited to show it was a 4.

x + 4 + 120 + x + 50 + 140 + 112 + x = 720     Combine

3x + 4 + 120 + 50 + 140 + 112 = 720

3x + 426 = 720                                                Subtract 431 from both sides

3x = 720 - 426                                                 Combine

3x = 294                                                          Divide by 3

x = 294/3

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3 0
2 years ago
Pls help fastBelow!!!!
julsineya [31]

So the scale is 3/4 cm for every 6 meters

So if you have 8 cm, we want to find the dimension of the actual wall

convert cm to meters

0.75 cm = 0.0075 meters

8 cm = 0.08 meters

\frac{0.0075}{6} = \frac{0.08}{x}

Cross Multiply

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6 0
3 years ago
Solve for x 4(2x+9)=-44+8
Andreas93 [3]

Answer:

x=-9

Step-by-step explanation:

distribute 4 into the parentheses

8x+36=-44+8

add -44+8

and u get 8x+36=-36

subtract the 36 on both sides and leave u with

8x=-72

divide 8 on both sides

and ur answer is -9

i dont think this make sense but hope this helps

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Answer:

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Step-by-step explanation:Hopefully this helped, if not HMU and I will get u a better answer!

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3 0
2 years ago
Today only, every sweatshirt is $4.25 less than normal price. Right now if you buy 5 sweatshirts, the total cost will be $106.25
Musya8 [376]

Answer:

Step-by-step explanation:

The normal price of the sweatshirt will be $21.50 because if you divide $78.75 by 5 you get $15.75 for each sweatshirt then you add the $5.75 with will make the original price $21.50

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