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fgiga [73]
2 years ago
14

Ganesh is making a scale model of the Space Needle in Seattle, Washington. The Space Needle is 605 feet tall. If the model is th

e actual size of the Space Needle, how tall is the model?
Show all your thinking.
Mathematics
2 answers:
lidiya [134]2 years ago
3 0

Answer:

it says if it was the exact same size thats what i understood so it would be 605ft tall

Step-by-step explanation:

creativ13 [48]2 years ago
3 0

Answer:

The model is 6.05 feet tall.

Step-by-step explanation:

Now to the breakdown.

What does it mean to scale? Scaling is used for representation drawing or model is designed to tell the audience(those interested in the design) the ratio to which the design was done in respect to the actual size.

From the above definition we can scale down or scale up. To scale down is to reduce the dimensions of the actual size in our design (possibly in an effort to conserve available space). To scale up is to enlarge the dimensions of the actual size in our design (possible in an effort to show intricate and tiny parts).

Back to question, The actual size of the space needle is 605 feet to design this using the actual size will require a very large amount of resources.  So the scale model is made at a scaled down ratio of 1:100 (in a bid to manage available resources like paper size and others pertaining to the design).

1:100 means that every 1ft in the scale model represents 100ft of the actual model.

So for an Height of 605ft the scale model will have representing height of 605/100 = 6.05ft.

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The equation for the area of a triangle is A= b*h /2. So, plug in your known variables, and you get 270in^2= b*30 /2. First you multiply by 2 to cancel out the division for 2, which gets you 540= b* 30. To get "b" by itself, divide both sides by 30, giving you <u>18=b</u>.

To check this, plug in your new known variable, as 270= 18* 30 /2. This will equal as 270=270, confirming 18in as the correct measurement.
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3 years ago
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3 years ago
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Answer:

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Step-by-step explanation:

Expected value:

Each possible earning/loss multiplied by it's probability.

Probability:

Number of desired outcomes divided by the number of total outcomes.

In this question, the order in which the numbers are chosen is not important. So we use the combinations formula to solve.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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Probability of winning:

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The expected value of this game is -$0.26.

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3 years ago
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