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2 years ago

A reaction takes 4 min 28 sec to complete. Which of the following is a correct representation of that time period?

Mathematics

1 answer:

Ostrovityanka [42]2 years ago

7 0

Using proportions, the correct representation of that time period is of 4.47 minutes.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

We have that one minute has 60 seconds, hence the proportion that the 28 seconds correspond of a minute is:

28/60 = 0.47 min.

Hence the correct representation of that time period is of 4.47 minutes.

More can be learned about proportions at brainly.com/question/24372153

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(-5,-2), 8, 13) find the slope

Bond [772]

Answer:

3/2

Step-by-step explanation:

When given two points, we can find the slope from

m= (y2-y1)/(x2-x1)

= (13 - -2)/(8- -5)

= (13+2)/(8+5)

= 15/10

Divide the top and bottom by 5

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3 years ago

Read 2 more answers

the sides of a triangle are 3 whole 1 by 6 cm 4 whole 2 by 3 cm and 5 whole 2 by 3 cm. Find the total length of the three sides

Lyrx [107]

Answer:

$16\frac{2}{3}$ cm

Step-by-step explanation:

Given dimensions:

$3\frac{1}{6}$ cm by $4\frac{2}{3}$ cm by $5\frac{2}{3}$ cm

The total length:

it is the sum of all the sides;

$\frac{19}{6} + \frac{14}{3} + \frac{17}{3}$

LCM of the denominators = 6 ;

$\frac{38 + 28 + 34}{6}$ = $\frac{100}{6}$

= $\frac{50}{3}$

= $16\frac{2}{3}$ cm

5 0

3 years ago

Given the points A(-1,2) and B(7,8), find the coordinates of the point P on directed line segment AB that partitions AB in the r

tankabanditka [31]

Now despite what you may believe, 1:3 is not 1/3 in this situation. In this case, it means "1 equal part to 3 equal parts", which is a total of 4 equal parts. In short, this question is to place point P 1/4 the distance from A to B.

Firstly, how far apart is -1 from 7 (the x-coordinates)? That would be 8 units. Multiply 1/4 by 8:

$\frac{1}{4}\times \frac{8}{1}=\frac{8}{4}=2$