Help asap

Mathematics

1 answer:

Tasya [4]2 years ago

5 0

Using improper fractions, it is found that they broke the record and were 0.8 minutes faster.

<h3>How to convert improper fractions to standard fractions?</h3>

The conversion is made according to the following formula:

$a\frac{b}{c} = a + \frac{b}{c} = \frac{ac + b}{c}$

In this problem, the time had to be faster than $12\frac{2}{5}$ minutes, which is a time in minutes of:

$12\frac{2}{5} = 12 + \frac{2}{5} = 12 + 0.4 = 12.4$

Researching the problem on the internet, it is found that their time was of $11\frac{3}{5}$ minutes, hence:

$11 + \frac{3}{5} = 11 + \frac{3}{5} = 11 + 0.6 = 11.6$

11.6 < 12.4, hence they broke the record.

12.4 - 11.6 = 0.8, hence they were 0.8 minutes faster.

You can learn more about improper fractions at brainly.com/question/14759886

You might be interested in

Pleseeeeeeeeeeeeeeee helllllpppppppppppppppppp fastttttt. urgent

Afina-wow [57]

5a) rotational symmetry is 2 because it can be rotated only 2 times before it turns to the original form.

b) perimeter is the total surface of all the sides so, because we are given a scale of 1 unit = 1cm then our measurements would be: 4cm + 3cm + 2cm + 1cm + 4cm + 3cm + 2cm + 1cm = 20cm.

c) To workout the area we need to divide the irregular shape into separate regular shapes. the diagram will help you! Shape 1 is a rectangle so, area = L × W = 3 × 2 = 6cm. Shape 2 is a square so, area = side² = 2² = 4cm. Shape 3 is the same as shape 1 so the area is 6cm. Now to find the area of the whole shape we add these values so, 6+4+6= area of shape = 16cm.