All categories

3 years ago

If a heart beats 30 times in 40 seconds. How many times will it beat in 1 year?

Mathematics

2 answers:

Murljashka [212]3 years ago

7 0

Answer:

10950

Step-by-step explanation:

1 year = 365

365 × 30

10950

sdas [7]3 years ago

7 0

Answer:

23,652,000 per year

Step-by-step explanation:

30 times in 40 seconds=15 times in 20 seconds

that's 45 times in one minute

45per min x (60m/hr) x (24hr/day)=64,800 per day

x (365 days per year)=23,652,000 per year

You might be interested in

.7 times 4 all this is for a question

anyanavicka [17]

Answer:

7777

Step-by-step explanation:

3 0

3 years ago

Find an equation in rectangular coordinates for the cylindrical equation r = 2sintheta

frutty [35]

Answer:

$x^2+(y-1)^2=1$

Step-by-step explanation:

The given cylindrical equation is

$r=2\sin \theta$

Multiply both sides by r.

$r^2=2r\sin \theta$ .... (1)

The required formulas are

$x=r\cos \theta,y=r\sin \theta,r^2=x^2+y^2$

Substitute $r\sin \theta =y,r^2=x^2+y^2$ in equation (1).

$x^2+y^2=2y$

$x^2+y^2-2y=0$

Add 1 on both sides.

$x^2+(y^2-2y+1)=1$

$(x-0)^2+(y-1)^2=1^2$ $[\because (a-b)^2=a^2-2ab+b^2]$

It is the equation of a circle centered at (0,1) with radius 1.

Therefore, the equation in rectangular coordinates is $x^2+(y-1)^2=1$ .

3 0

3 years ago

Josh’s mother is buying baked goods for breakfast. Doughnuts cost $1.00

Ira Lisetskai [31]

Answer:

B or $8.75

Step-by-step explanation:

Hope this helps!

8 0

3 years ago

Read 2 more answers

What is the product (2t+1) (t-4)

____ [38]

Answer:

Step-by-step explanation:

(2t+1)(t-4)

= 2t^2 - 8t + t - 4

= 27^2 - 7t - 4

3 0

3 years ago

Help meeeee_ 3+4x+7= what

kari74 [83]

Answer:

10+4x

Step-by-step explanation:

COmbine like terms

4 0

3 years ago

Read 2 more answers