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3 years ago

8

The scale for a model is built to represent a real-life skyscraper. If a measurement of 4 cm on the model of the building is equ

ivalent to 36 meters in real-life, what is the scale factor of the model?

1 answer:

Svetlanka [38]3 years ago

5 0

The scale would be 1 centimeter: 9 meters

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Can someone help please

Natalka [10]

A^2+b^2=c^2
24^2+b^2=26^2
576+b^2=676
-576. -576
b^2=100

5 0

2 years ago

X-y+z=-4<br><br> 3x+2y-z=5<br><br> -2x+3y-z=15<br><br> How do I solve this?

Lera25 [3.4K]

$1)\ \ \ x-y+z=-4\ \ \ \Rightarrow\ \ \ z=-4-x+y\\\\2)\ \ \ 3x+2y-z=5 \\.\ \ \ \ \Rightarrow\ \ 3x+2y-(-4-x+y)=5 \\.\ \ \ \ \Rightarrow\ \ 3x+2y+4+x-y=5 \\.\ \ \ \ \Rightarrow\ \ 4x+y=1\\\\3)\ \ \ -2x+3y-z=15\\.\ \ \ \ \Rightarrow\ \ -2x+3y-(-4-x+y)=15\\.\ \ \ \ \Rightarrow\ \ -2x+3y+4+x-y=15\\.\ \ \ \ \Rightarrow\ \ -x+2y=11\\--------------------\\$

$z=-4-x+y\\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and\\ \left \{ {{4x+y=1\ \ \ \ } \atop {-x+2y=11\ /\cdot4}} \right. \\\\\left \{ {{4x+y=1\ \ \ \ } \atop {-4x+8y=44}} \right. \\-------\\y+8y=1+44\\9y=45\ /:9\\y=5\\\\-x+2y=11\ \ \ \Rightarrow\ \ \ x=2y-11\ \ \ \Rightarrow\ \ \ x=2\cdot5-11=-1\\\\z=-4-x+y=-4-(-1)+5=-4+1+5=2\\\\Ans.\ x=-1\ \ \ and\ \ \ y=5\ \ \ and\ \ \ z=2$

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3 years ago

In a school of 3200 total students 3/8

AleksAgata [21]

Answer:

ii) Find the percentage of boys/girls

Step-by-step explanation:

If im incorrect please comment here ------------》

4 0

2 years ago

The sum of the first 70 positive odd integers.

Leokris [45]

Answer:

The answer is 4900

Do you understand?

Step-by-step explanation:

.

7 0

2 years ago

The theoretical probability of spinning a 9 is_?

ale4655 [162]

Answer:

The theoretical probability of spinning a sum of 9 is 4/36 or 1/9.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers