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MrRissso [65]
3 years ago
10

Can someone help me with this and show their work and how they found the answer?

Mathematics
1 answer:
Semenov [28]3 years ago
4 0

Answer:

2kg

Step-by-step explanation:

Let the sum of the other 2 bricks be R. Given that the heaviest brick weighs 2/3 times as much as the other 2 bricks in total, then the weight of the heaviest brick H in terms of the weight of the other 2 will be

H = 2/3 * R

= 2R/3

Given that the 3 bricks weigh 5kg in total then,

2R/3 + R = 5

Multiply through the equation by 3

2R + 3R = 15

5R = 15

Divide both sides by 5

R = 15/5

= 3

The weight of the heaviest brick is 2R/3. Since R = 3, the heaviest block weighs

= 2 * 3/3

= 2kg

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Answer:

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<u>1. Scale</u>:

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<u>2. Proportion</u>:

Naming x the model length:

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In the model the ratio of the length to the width is 3 inch / 5 inch

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