All categories

3 years ago

A human heart beats an average of 80 beats per minute. How many heart beats is this in a day

Mathematics

1 answer:

vovangra [49]3 years ago

3 0

Answer:

115200

Step-by-step explanation:

80 Beats Per Minute x 60 Minutes (1 hour) x 24 Hours (1 Day) = 115200

You might be interested in

A figure is composed of a semicircle and a right triangle. Determine the area of the shaded region. Use 3.14 for π and round to

Aliun [14]

Answer:

$A=9.5\ ft^2$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of triangle plus the area of semicircle

$A=\frac{1}{2}bh+\frac{1}{2}\pi r^{2}$

we have

$b=4\ ft$

Find the height of the right triangle applying the Pythagorean Theorem

$5^2=h^2+4^2$

$h^2=9\\h=3\ ft$

The radius of the semicircle is half the height of triangle

$r=3/2=1.5\ ft$

substitute in the formula

$A=\frac{1}{2}(4)(3)+\frac{1}{2}(3.14)(1.5)^{2}$

$A=6+3.5=9.5\ ft^2$

5 0

3 years ago

Read 2 more answers

Find the 6th term of the arithmetic sequence X – 9, -X – 11, -3.3 – 13, ...

MrMuchimi

Answer:

$-13x-23$

Step-by-step explanation:

Given sequence: $x-9, -x-11, -3x-13$

Therefore,

$a_1=x-9$
$a_2=-x-11$
$a_3=-3x-13$

General form of an arithmetic sequence: $a_n=a+(n-1)d$

(where a is the first term and d is the common difference)

To find the common difference, subtract a term from the next term:

$\begin{aligned}d & =a_2-a_1\\ & =(-x-11)-(x-9)\\ & = -x-11-x+9\\ & = -2x-2\end{aligned}$

Therefore,

$a_n & =(x-9)+(n-1)(-2x-2)$

To find the 6th term, input n = 6 into the equation:

$\begin{aligned}\implies a_6 & =(x-9)+(6-1)(-2x-2)\\ & = (x-9)+7(-2x-2)\\ & = x-9-14x-14\\ & = -13x-23\end{aligned}$

3 0

2 years ago

Evaluate expression 2 (d +9)

LenKa [72]

Answer:

2d +18

Step-by-step explanation:

use distributive property:

a(b+c)

= ab+ac

7 0

2 years ago

Read 2 more answers

Anna is playing a word game with tiles shaped like triangles. She needs to make a word with only those that appear to be right t

PIT_PIT [208]

B) FELT is the correct answer

8 0

3 years ago

Read 2 more answers

A. Determine the y-intercept by substituting 0 for x

Sergeu [11.5K]

What’s the question?

6 0

3 years ago