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3 years ago

Larissa practices for a swimming tournament

Mathematics

1 answer:

scoundrel [369]3 years ago

4 0

Answer:

Larissa takes 59.141 seconds to complete both laps.

Step-by-step explanation:

The complete time is the sum of time taken on each lap. We translate the two statements into mathematical expressions to determine the required output:

(i) <em>She completes her first lap in 31.135 seconds</em>:

$x_{1} = 31.135\,s$

(ii) <em>She completes her second lap 3.129 seconds faster than the first lap</em>:

$x_{2} = x_{1}-3.129\,s$

$x_{2} = 31.135\,s - 3.129\,s$

$x_{2} = 28.006\,s$

Then, the time taken by Larissa to complete both laps is:

$\Delta x = x_{1} + x_{2}$

$\Delta x = 31.135\,s+28.006\,s$

$\Delta x = 59.141\,s$

Larissa takes 59.141 seconds to complete both laps.

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Goryan [66]

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In 1 minute, My brother walk = 1/40

In T minutes, I walk = T*1/30

My brother walk 8 minute before = T + 8

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When these two distances are same, then I will catch him.

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30*(T + 8) = 40*T

30*T + 240 = 40*T

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hence, I will catch him in 24 minutes.

Take 5 instead of 8.

My brother walk 5 minute before = T + 5

In 1 minute, My brother walk = (T + 5)*1/40

When these two distances are same, then I will catch him.

T*(1/30) = (T + 5)*(1/40)

30*(T + 5) = 40*T

30*T + 150 = 40*T

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T = 15 minutes

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3 years ago

What is the value of tan M?

ludmilkaskok [199]

Hi there! The answer is 15/8.

The general formula for the tangent is
$\tan(m) = \frac{opposite}{adjecent}$

When we fill in the data from the picture, we get the following:
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3 years ago

Please help!

Helga [31]

First you need to find how much is left in the container by finding the whole volume.
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V= (3.14)*(5²)*(10)
V=(31.4)(25)
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lawyer [7]

Answer:

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Step-by-step explanation:

We are given the following in he question:

Number of bags of tortilla chips sold = 7981

Number of bags hat were fat free = 1178

We have to find the percentage of bags that were fat free.

Percentage:

$\dfrac{\text{Number of fat free bags}}{\text{Total number of bags}}\times 100\%\\\\=\dfrac{1178}{7981}\times 100\%\\\\=14.76\%$

Thus, 14.76% of tortilla chips bag were fat free.

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