Hey guys, I need help with these Scale factor problems! problems are linked in a screenshot below:

Mathematics

1 answer:

AVprozaik [17]2 years ago

7 0

Answer:

A → B: 1/3
correct
A → B: 2/5

Step-by-step explanation:

It is clear from your answer to the second part that you know the A→B scale factor is the reciprocal of the B→A scale factor. Use that fact for the other two parts of the question.

A → B = 1/3; B → A = 3
A → B = 2; B → A = 1/2
A → B = 2/5; B → A = 5/2

It is convenient to find a unit length (or the smallest length) on the smaller figure, then see how much that is multiplied by to get the larger figure.

B : A = 1 : 3
A : B = 1 : 2
B : A = 2 : 5

Once you have these ratios, you need to determine what the notation A→B is supposed to mean. Here, we presume it means B/A.

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Write and solve an equation to find the value of each variable

yan [13]

Check the picture below.

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2 years ago

Mrs William has a prized box with different colored tickets. Each ticket results in different type of prize.

Lera25 [3.4K]

$\text{ Answer:} \text{ Probability that he chooses a yellow ticket and then a purple ticket }= \frac{3}{25}$

Step-by-step explanation:

Since we have given that

Number of green tickets =3

Number of yellow tickets = 4

Number of purple tickets = 3

Total number of tickets = 3+4+3=10

Now,

As we know that Pedro select a ticket and replace it and then select another ticket , total number of outcomes will never change it will be 10 only for each case.

Probability that he chooses a yellow ticket and then a purple ticket is given by

$\frac{4}{10}\times \frac{3}{10}\\\\=\frac{12}{100}\\\\=\frac{3}{25}$