All categories

3 years ago

In 2009, usain bolt set the world record for sprinting 100 m in approximately 9 3/5 a second.

Mathematics

2 answers:

BartSMP [9]3 years ago

8 0

Answer:

The average speed of usain bolt in meter per second is $10\frac{5}{12}$ .

Step-by-step explanation:

It is given that usain bolt set the world record for sprinting 100 m in approximately 9 3/5 a second.

Formula for average speed.

$speed=\frac{distance}{time}$

Given distance is 100 m and time in sec is

$9\frac{3}{5}=\frac{45+3}{5}=\frac{48}{5}$

The average speed in meter per second is

$speed=\frac{100}{\frac{48}{5}}$

$speed=\frac{500}{48}$

$speed=\frac{125}{12}$

$speed=10\frac{5}{12}$

Therefore the average speed of usain bolt in meter per second is $10\frac{5}{12}$ .

Lubov Fominskaja [6]3 years ago

4 0

Answer:

10 5/12

10, start fraction, 5, divided by, 12, end fraction

Step-by-step explanation:

You might be interested in

The mark in a subject for 12 students are as follows 31`, 37 ,35,38 ,42 ,23,17,18 ,35,25, 35,29

just olya [345]

Answer:

Mean (Average): 30.416666666667

Median: 33

Range: 25

Mode: 35, appeared 3 times

Step-by-step explanation:

8 0

2 years ago

Simplify, state all restrictions.

Kipish [7]

The simplified expression is $\frac{1 - x - y}{x + y}$ and the restriction is $y \ne -x$

<h3>How to simplify the expression?</h3>

The expression is given as:

$\frac{x - y}{4x^2 - 8xy + 3y^2} \div \frac{2x + y}{2x - 3y} \times \frac{4x^2 - y^2}{x^2 - y^2} -1$

Express x^2 - y^2 as (x + y)(x - y) and factorize other expressions

$\frac{x - y}{(2x - y)(2x - 3y)} \div \frac{2x + y}{2x - 3y} \times \frac{4x^2 - y^2}{(x - y)(x + y)} -1$

Rewrite the expression as products

$\frac{x - y}{(2x - y)(2x - 3y)} \times \frac{2x - 3y}{2x + y} \times \frac{4x^2 - y^2}{(x - y)(x + y)} -1$

Cancel out the common factors

$\frac{1}{(2x - y)} \times \frac{1}{2x + y} \times \frac{4x^2 - y^2}{(x + y)} -1$

Express 4x^2 - y^2 as (2x - y)(2x + y)

$\frac{1}{(2x - y)} \times \frac{1}{2x + y} \times \frac{(2x - y)(2x + y)}{(x + y)} -1$

Cancel out the common factors

$\frac{1}{x + y} -1$

Take the LCM

$\frac{1 - x - y}{x + y}$

Hence, the simplified expression is $\frac{1 - x - y}{x + y}$ and the restriction is $y \ne -x$

Read more about expressions at:

brainly.com/question/723406

#SPJ1

7 0

1 year ago

De las soluciones de la siguiente ecuación: x2 + 8x − 30 = 18? Cual es el numero de mayor valor Entre.

vekshin1

Answer:

The correct answer is "x = 4" and "x = -12".

Step-by-step explanation:

The given equation is:

⇒ $x^2+8x-30=18$

On subtracting "18" from both sides, we get

⇒ $x^2+8x-30-18=18-18$

⇒ $x^2+8x-48=0$

On applying factorization, we get

⇒ $x^2+12x-4x-48=0$

On taking common, we get

⇒ $x(x+12)-4(x+12)=0$

⇒ $(x-4)(x+12)=0$

⇒ $x-4=0$

$x=4$

or,

⇒ $x+12=0$

$x=-12$

4 0

2 years ago

More expression help!

irga5000 [103]

Y=5s+8a+200 is the right answer pretty sure

6 0

3 years ago

Is morgan hall cool because i dont

klemol [59]

Answer:

Step-by-step explanation:

what?

4 0

2 years ago