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lutik1710 [3]
3 years ago
14

What single decimal multiplier would you use to decrease by 3% followed by a 6% increase?

Mathematics
1 answer:
Charra [1.4K]3 years ago
6 0

Answer:

1.0282

Step-by-step explanation:

The multiplier for a increase of a% is 1 + a/100.

The multiplier for a decrease of b% is 1 - b/100.

Decrease of 3% followed by a 6% increase:

Calculate each multiplier, and then multiply then:

Decrease 3%: 1 - (3)/100 = 0.97

Increase 6%: 1 + (6)/100 = 1.06

0.97*1.06 = 1.0282

The answer is 1.0282

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In a class of 55 21 study physics 24 study geography and 23 study economics and physics. if x students study all three subjects
Rus_ich [418]

The total number of students who studied only two subjects is 13.

The given parameters:

  • <em>Total number of students, n = 55 </em>
  • <em>Number of physics students = 21</em>
  • <em>Number of geography students = 24</em>
  • <em>Number of economics students = 23</em>
  • <em>Number of students for the 3 subjects, = x</em>
  • <em>Number of students who studied non = 2x</em>

The number of students who studied only two subjects can be determined by applying overlapping three sets formula as shown below;

Total = n(phy) + n(geo) + n(econ) + n(none)- n(double) - 2(all \ subjects)\\\\55 = 21 + 24 + 23 + 2x-n(double) - 2(x)\\\\55 =  68- n(double)\\\\n(double) = 68-55\\\\n(double) = 13

Thus, the total number of students who studied only two subjects is 13.

Learn more about overlapping three sets here:  brainly.com/question/2041029

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2 years ago
Which one a b c or d
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6 0
3 years ago
if your gross pay was $365 and your net pay was $313.90 what percent of your pay went towards deductions
tatiyna
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5 0
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If coordinate 5,7 is also in g(x), what is the domain of g(x)?​
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4 0
3 years ago
The popping-times of the kernels in a certain brand of microwave popcorn are
Lynna [10]

Answer:

The z-score for this kernel is -2.3

Step-by-step explanation:

* Lets revise how to find the z-score

- The rule the z-score is z = (x - μ)/σ , where

# x is the score

# μ is the mean

# σ is the standard deviation

* Lets solve the problem

- The popping-times of the kernels in a certain brand of microwave

  popcorn are  normally distributed

- The mean is 150 seconds

- The standard deviation is 10 seconds

- The first kernel pops is 127 seconds

- We want to find the z-score for this kernel

∵ z-score = (x - μ)/σ

∵ x = 127

∵ μ = 150

∵ σ = 10

∴ z-score = (127 - 150)/10 = -23/10 = -2.3

* The z-score for this kernel is -2.3

7 0
3 years ago
Read 2 more answers
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