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arsen [322]
3 years ago
10

Finke typing speed increased from 40 words per minute to 45 words per minute. What was the percent increase?

Mathematics
1 answer:
Kaylis [27]3 years ago
8 0
In the given question, it is already disclosed that the typing speed of Finke has increased from 40 words per minute to 45 words per minute. Now we have to find the percentage increase in the speed of typing.
For this purpose we have to find the solution in the method described below.
Number of increase in words typed per minute = 45 -40
                                                                           = 5
Then Percentage increase in the speed of typing by Finke = (5/40) * 100
                                                                                              = (1/8) * 100
                                                                                               = 25/2
                                                                                               = 12.5
So the percentage increase in the typing speed of Finke is 12.5%. I hope this has answered your question and the description used to solve this problem is understandable.
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Evgen [1.6K]

Answer:

209.005 gms

Step-by-step explanation:

Given that the weights of packets of cookies produced by a certain manufacturer have a Normal distribution with a mean of 202 grams and a standard deviation of 3 grams.

Let X be the weight of packets of cookies produced by manufacturer

X is N(202, 3) gms.

To find the  weight that should be stamped on the packet so that only 1% of the packets are underweight

i.e. P(X<c) <0.01

From std normal table we find that z value = 2.335

Corresponding x value = 202+3(2.335)

=209.005 gms.

5 0
3 years ago
Aubrey has a Shelf full of books exactly one third of books on the Shelf are Mysteries. Aubrey has read 10 of the mysteries on t
CaHeK987 [17]
The correct answer for this question is this one: "<span>147"</span>

Here's how to solve this problem.

Let  <span>x = number of mystery books on the shelf </span>
<span>Let 3x = total number of books on the shelf </span>

<span>we are told that </span>
<span>x/5<10<x/4 </span>
<span>multiply by 20, </span>
<span>4x<200<5x </span>
<span>which means that </span>
<span>40<x<50 </span>
<span>So the number of mystery books can be any number between 41 and 49.
In other words, the possible total number of books could be three times the above numbers, 123, 126, 129,.... </span>
Choose the one that suits your answer choices.

Here are the following choices:
Which could be the number of books on the shelf? 
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4 0
3 years ago
5x = 45
Trava [24]
Division Property of Equality
5 0
3 years ago
Write an inequality for the situation
Firdavs [7]
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4 0
3 years ago
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For what values of x would the following be true?<br> -2(x-3)&lt;4
emmainna [20.7K]

Answer:

x > 1

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

-2(x - 3) < 4

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Divide -2 on both sides:                    x - 3 > -2
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Here we see that any value <em>x</em> greater than 1 would work as a solution to the equation.

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