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tensa zangetsu [6.8K]
2 years ago
10

In 10 mins a heart can 700 times. How many mins will a heart beat 140 times?

Mathematics
1 answer:
serious [3.7K]2 years ago
3 0
700/10 is 70 so if the heart beats 70 times per minute that means 2 minutes is how long it takes for the heart to beat 140 times
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Need help ASAP
Westkost [7]

Answer:

1.333 repeated

Step-by-step explanation:

8 0
2 years ago
In a doctor's waiting room, there are 14 seats in a row. Eight people are waiting to be seated. Three of the 8 are in one family
lianna [129]
There are 14 chairs and  8 people to be seated. But among the 8. three will be seated together:

So 5 people and (3) could be considered as 6 entities:

Since the order matters, we have to use permutation:

¹⁴P₆ = (14!)/(14-6)! = 2,162,160, But the family composed of 3 people can permute among them in 3! ways or 6 ways. So the total number of permutation will be ¹⁴P₆  x 3! 

2,162,160 x 6 = 12,972,960 ways.

Another way to solve this problem is as follow:

5 + (3) people are considered (for the time being) as 6 entities:

The 1st has a choice among 14 ways
The 2nd has a choice among 13 ways
The 3rd has a choice among 12 ways
The 4th has a choice among 11 ways
The 5th has a choice among 10 ways
The 6th has a choice among 9ways

So far there are 14x13x12x11x10x9 = 2,162,160 ways
But the 3 (that formed one group) could seat among themselves in 3!
or 6 ways:

Total number of permutation = 2,162,160 x 6 = 12,972,960

4 0
2 years ago
X^7+5x+9 <br> what is f(-1) for the polynomial
krek1111 [17]

Answer:

-1 -5 +9 = 3

Step-by-step explanation:

3 0
3 years ago
In a cookie jar, 1/4 of the cookies are chocolate chip, and 1/4 of the rest are peanut butter..What fraction of all the cookies
evablogger [386]

1/4 × 1/2 multiply 1/2 by 2 to get 2/4 then add 1/4 and 2/4 ur answer 3/4 the fraction of all the cookies that is peanut butter is 3/4


3 0
3 years ago
Read 2 more answers
A baseball team hosts an exhibition game in order to raise at least $5,000 for new equipment. Regular stadium seats sell for $5
Aneli [31]

Answer:B 100%

Step-by-step explanation:

7 0
3 years ago
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