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cluponka [151]
3 years ago
15

Brianna is getting materials for a chemistry experiment her teacher gives her a container that has 0.15 L of liquid in it Breonn

a needs to use 0.4 of this liquid for the experiment how much liquid will Breonna use
Mathematics
2 answers:
Charra [1.4K]3 years ago
5 0
The answer to  your question is 0.06
Jlenok [28]3 years ago
3 0

Answer:

0.06 L

Step-by-step explanation:

Given:

  • Brianna has a container that has 0.15 L of liquid in it
  • Breonna needs to use 0.4 of this liquid

0.15 L represents the 100% of the liquid. 0.4 represents the 40% of the liquid (0.4*100 = 40%). So the following proportion applies:

(0.15 L)/(100) = x/40

x = (0.15 L)/(100)*40

x = 0.15*0.4

x = 0.06 L

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3 years ago
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By assuming the standard deviation of population 2.2 the confidence interval is 8.67 toys,8.94 toys.

Given sample size of 1492 children,99% confidence interval , sample mean of 8.8, population standard deviation=2.2.

This type of problems can be solved through z test and in z test we have to first find the z score and then p value from normal distribution table.

First we have to find the value of α which can be calculated as  under:

α=(1-0.99)/2=0.005

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M=2.575*2.2/\sqrt{1492}

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The upper value will be x+M

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Hence the confidence interval will be 8.67 toys and 8.94 toys.

Learn more about z test at brainly.com/question/14453510

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1. Find the rate of change pictured here from 1
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Step-by-step explanation:

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