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aev [14]
3 years ago
14

Music may help people relax. John got two groups of people together. He took everybody's pulse of blood pressure. The one group

to listen to soothing music while other group sat in silence. After the song was over, he measured everyone's pulse and blood pressure.
What is the independent variable?
What is the dependent variable?
What are the constants or control variables?
Mathematics
1 answer:
aivan3 [116]3 years ago
5 0
Independent: Music or silence

Dependent: Pulse and blood pressure

Constants: Similar rooms, similar temperature, similar heart health, same time in areas, same kind of environment, etc.
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4 there are only red sweets and yellow sweets in a bag.
Taya2010 [7]

Using the probability concept, it is found that since the number of red sweets would be a decimal number, the probability cannot be \dfrac{7}{10}

<h3>What is probability?</h3>

Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

In this problem:

  • In total, there are 8 + n sweets in the bag.
  • Of those, n are red.

The probability of red is:

p=\dfrac{n}{n+8}

Supposing, we solve for n:

\dfrac{n}{n+8} = \dfrac{7}{10}

10n = 7n + 56

3n = 56

n  =  56 / 3

n  =  18.67

Since the number of red sweets would be a decimal number, the probability cannot be 7 / 10

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brainly.com/question/24756209

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4 0
2 years ago
Factor out completely the quadratic function : NEED THIS ASAP WILL GIVE BRAINLIEST
ra1l [238]

Answer:

Here is your answer

Step-by-step explanation:

3.(x+3)(x+5)

4.(x-8)(x+8)

5.(x+6)^2

8 0
3 years ago
allen has a debt of 500$.He owes equal amounts to 10 different people. Express his debt to one person as a negative number.
SOVA2 [1]
-50 because if he owes 10 different people the same amount it would be -50 because he owes them money
4 0
3 years ago
Alonzo wrote the equation x=2+4y-5 solve for y
kati45 [8]

hi

if x= 2+4y-5  then        x-2 +5 =  4y   so   y =  (x-2+5)  /4 =  ( x+3) /4

conclusion   y  =  (x+3)/4

3 0
3 years ago
What’s the answer to the product of 12 and k is 84
ra1l [238]

Answer:

7

Step-by-step explanation:

You would do the inverse opperation (divide) so 84/12.

Hope this helps :)

8 0
3 years ago
Read 2 more answers
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