Resolver:
|3x − 4| = 9 - 5x

Answers

Answer 1

Answer:

Step-by-step explanation:


Related Questions

Xavier makes a conjecture that the sum of two odd integers is always an even integer. Which choice is the best proof of his conjecture?.

Answers

The correct option  A: Let 2a + 1 be one odd number, and let 2b + 1 be the other odd number. (2a + 1) + (2b + 1) = 2a + 2b + 2 = 2(a + b + 1). Because 2(a + b + 1) is evenly divisible by 2, it is an even number.

Explain the term even integer?Odd numbers cannot be divided by two exactly, whereas even numbers were integers that can be divided by two exactly. Even number examples include 2, 6, 10, 20, 50, etc.

The statement made by Xavier that the product of two odd integers always results in an even integer should be noticed.

For the given case, conjecture that the sum of two odd integers is always an even integer is -

Let 2a + 1 be one odd number, and let 2b + 1 be the other odd number. (2a + 1) + (2b + 1) = 2a + 2b + 2 = 2(a + b + 1). Because 2(a + b + 1) is evenly divisible by 2, it is an even number.

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The complete question is-

Xavier makes a conjecture that the sum of two odd integers is always an even integer. Which choice is the best proof of his conjecture?

Select option;

A: Let 2a + 1 be one odd number, and let 2b + 1 be the other odd number. (2a + 1) + (2b + 1) = 2a + 2b + 2 = 2(a + b + 1). Because 2(a + b + 1) is evenly divisible by 2, it is an even number.

B: Look at these different examples: 3 + 5 = 8, 13 + 5 = 18, 23 + 5 = 28. So the sum of two odd numbers must be even.

C: Let a and b both represent odd numbers, and let a + b be an even number. Therefore, a + b = b + a, which shows that the sum of two odd numbers is even.

D: Every time you add two odd numbers, the sum is an even number.

A hotel ha food proviioned for 30 day to erve 80
people. If 40 more men join the hotel, the ame proviion
would have lat for how many day?

Answers

By using the formula, days = (original number of people / new number of people) * original number of days, the same food would last for 20 days.

What is number?

A number is a mathematical concept that refers to a quantity or value that can be represented by a symbol. Numbers can be used to represent quantities in various contexts, such as counting, measuring, and quantifying.

What is irrational numbers?

Irrational numbers are numbers that cannot be expressed as the ratio of two integers (e.g. pi, the square root of 2).

days = (original number of people / new number of people) * original number of days

In this case, we can plug in the values as follows:

days = (80 / (80 + 40)) * 30

days = (80 / 120) * 30

days = 2/3 * 30

days = 20


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A. 2.9 inches
B. 40 inches
C. 3.2 inches
D. 2.1 inches

Answers

The required measure of length of the box is 2.9 inches. Option A is correct.

What is volume?

Volume is defined as the mass of the object per unit density while for geometry it is calculated as profile area multiplied by the length at which that profile is extruded.

Here,
according to the question,
h = 3l - 2.5
w = 3/4l
The volume of the box,
40 = l × w × h
40  = l × 3/4l × [3l-2.5]
40 = 3/4l²[3l - 2.5]
40 = 9/4l³ - 7.5/4l²

9/4l³ - 7.5/4l² - 40 = 0
t = 2.91932
t ≈ 2.9 inches

Thus, the length of the box must be at least 2.9 inches. Option A is the right answer.

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A statistics professor would like to build a model relating student scores on the first test to the scores on the second test. The test scores from a random sample of 21 students who have previously taken the course are given in the table.
Test Scores
Student First Test Grade Second Test Grade
1 50 70
2 91 58
3 55 74
4 58 65
5 79 60
6 70 60
7 97 48
8 51 73
9 51 73
10 59 66
11 69 67
12 56 70
13 56 73
14 41 76
15 49 72
16 58 68
17 58 73
18 99 53
19 87 58
20 95 50
21 97 55
Using statistical software, estimate the parameters of the model
Second Test Grade=β0+β1(First Test Grade)+εiSecond Test Grade=β0+β1(First Test Grade)+εi.
Enter a negative estimate as a negative number in the regression model. Round your answers to 4 decimal places, if necessary.

Answers

Sum of multiplied differences= -962.676 and β1 = -962.676 / ((-18.381)^2 + (22.619)^2 + (-13.381)^2 + (-10.381)^2 + (10.619)^2 + (2.619)^2 + (28.619)^2 + (-17.381)^2 + (-17.381)^2 + (-9.381)^2 + (0.619).

To estimate the parameters of the model, we can use the following steps:

Calculate the mean of the first test scores and the mean of the second test scores.

Calculate the difference between each student's first test score and the mean first test score, and the difference between each student's second test score and the mean second test score.

Multiply the differences from step 2 together for each student, and sum the results.

Divide the sum from step 3 by the sum of the squares of the differences from step 2. This will give us the value of β1.

Calculate β0 by substituting the values of β1 and the mean first and second test scores into the equation: Second Test Grade = β0 + β1(First Test Grade)

Using these steps, we can calculate the estimates of the parameters as follows:

Mean first test score = (50+91+55+58+79+70+97+51+51+59+69+56+56+41+49+58+58+99+87+95+97)/21 = 68.381

Mean second test score = (70+58+74+65+60+60+48+73+73+66+67+70+73+76+72+68+73+53+58+50+55)/21 = 64.762

Difference between student 1's first test score and mean first test score = 50 - 68.381 = -18.381

Difference between student 1's second test score and mean second test score = 70 - 64.762 = 5.238

Difference between student 2's first test score and mean first test score = 91 - 68.381 = 22.619

Difference between student 2's second test score and mean second test score = 58 - 64.762 = -6.762

Sum of multiplied differences = (-18.3815.238) + (22.619-6.762) + (-13.3818.238) + (-10.381-0.762) + (10.619*-6.238) + (2.619*-7.238) + (28.619*-16.762) + (-17.3819.238) + (-17.3819.238) + (-9.381*-0.762) + (0.619*-0.238) + (-2.3816.238) + (-2.3817.238) + (-27.38116.238) + (-18.3813.238) + (-10.381*-3.762) + (-10.3815.238) + (-10.3815.238) + (30.619*-11.762) + (18.619*-6.762) + (26.619*-14.762) + (28.619*-9.762) = -962.676

β1 = -962.676 / ((-18.381)^2 + (22.619)^2 + (-13.381)^2 + (-10.381)^2 + (10.619)^2 + (2.619)^2 + (28.619)^2 + (-17.381)^2 + (-17.381)^2 + (-9.381)^2 + (0.619)

Thus, Sum of multiplied differences= -962.676 and β1 = -962.676 / ((-18.381)^2 + (22.619)^2 + (-13.381)^2 + (-10.381)^2 + (10.619)^2 + (2.619)^2 + (28.619)^2 + (-17.381)^2 + (-17.381)^2 + (-9.381)^2 + (0.619).

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sorry i chose the wrong image

Answers

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i just got some free money off of you kid

solve please
A
B
c
d

Answers

Answer:

the answer is A

Hope this helps

The answer to the expression is

C

What is -1/4(-8.6) written as a decimal to the nearest hundredth

Answers

Answer:

2.15

Step-by-step explanation:

Write the range for the relation.
((-1, 1), (-2, 5), (-3, 7). (5, 8))

Answers

The range of a relation is the set of all possible values of the second element of the ordered pairs in the relation. In this case, the range of the relation is the set {1, 5, 7, 8}. This can be found by looking at the second element of each ordered pair in the relation and listing all the different values that appear.

a quadrilateral must be a parallelogram if one pair of opposite sides is a. congruent, only b. parallel, only c. congruent and parallel d. parallel and the other pair of opposite sides is

Answers

a quadrilateral must be a parallelogram if one pair of opposite sides is congruent and parallel

A quadrilateral with two sets of opposing parallel sides is referred to as a parallelogram.To be a parallelogram, one pair of opposite sides must be congruent and parallel. Congruent means that two sides have the same measurements or length while parallel means that two lines never intersect. For example, if one pair of opposite sides is congruent and parallel, and the other pair of opposite sides is parallel, then the quadrilateral is a parallelogram. This is because the two pairs of opposite sides form parallel lines and the respective pairs have the same length. Therefore, the answer is c. congruent and parallel.

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. The flashlight shown below has no batteries. Instead, it is operated by squeezing and letting go of the handle
Inside the body of the flashlight are gears.
A Kinetic → electrical → light
8 Kinetic chemical → light
C. Chemical -kinetic light
D chemical- electrical → light

Answers

The sequence of the energy conversion is;  Kinetic → electrical → light Option A

What is energy conversion?

From the first law of thermodynamics, we know that energy can neither be created nor destroyed but it can be converted from one form to the other. We have been told that in this case, the flashlight shown below has no batteries. Instead, it is operated by squeezing and letting go of the handle.

The letting go of the handle is kinetic energy which would lead to electrical energy that is then converted into the visible light energy.

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Factorise this expression please help!!

Answers

Answer:

(a + 9)(a + 5)

Step-by-step explanation:

a² + 14a + 45

consider the factors of the constant term (+ 45) which sum to give the coefficient of the a- term (+ 14)

the factors are + 9 and + 5 , since

+ 9 × + 5 = = + 45 and + 9 + 5 = + 14 , then

a² + 14a + 45 = (a + 9)(a + 5)

I need help I don’t know how to do this question on ixl

Answers

using the Pythagorean Theorem, we can find the distance between the library and the community pool as follows:

distance = sqrt(12^2 + 13^2) = sqrt(144 + 169) = sqrt(313) = 17.69 miles

Therefore, the distance between the library and the community pool is approximately 17.69 miles.

need help struggling!

Answers

Answer:

Step-by-step explanation:

This is the same as before,  two sides are the same length, so we know the angles are also the same.  That is, D and C are equal

180= 106+2a

now algebra again

(180-106)/2 = a

74/2 = a

37 = a

what is the angle of rotation that maps point P to point Q?

Answers

Answer:225 degrees

Step-by-step explanation:

What’s the surface area of this prism ?

Answers

The surface area of the triangular prism is 191 cm².

What is a triangular prism?

A triangular prism is a polyhedron made up of two triangular bases and three rectangular sides. It is a three-dimensional shape that has three side faces and two base faces, connected to each other through the edges.

We know the surface area of a triangular prism is (S₁ + S₂ + S₃)/l + bh.

The given triangular prism has a surface area from the given diagram we determine, 3(D×A) + 2(B×C)    [area of rectangles and triangles],

= 3(8×4) + 2(10×6).

= 3(24) + 2(60).

= 71 + 120.

= 191 cm².

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determine the probability of drawing either a queen or a heart? write your answer as a reduced fraction.

Answers

The probability that the card drawn is either a queen or a heart is 4/13

According to the given information

Consider the random experiment of picking one card from a deck of 52 cards that has been expertly shuffled, as well as the subsequent occurrences.

A queen is the card that was drawn.

H: the heart card was shown.

The chance that "the card drawn is a queen" is P(Q) = 4/52 = 1/13 because there are four queens.

The probability that the card selected will be a heart is P(H) = 13/52, or 1/4, because there are 13 hearts in the deck. Because the queen of hearts is one of the deck's cards, events Q and H are inclusive events. P(Q and H) = 1/52 is the likelihood that "the card picked is a queen and a heart (the queen of hearts)".

Four queens and thirteen hearts are included in the chance that "the card picked is a queen or a heart," but we do not want to count the queen of hearts twice. There are so 16 different methods to depict a queen.

The probability that the card drawn is either a queen or a heart

P(Q or H) = P(Q) + P(H) - P(Q and H)

                =  [tex]\frac{4}{52} + \frac{13}{52} - \frac{1}{52}[/tex]

                =  [tex]\frac{16}{52}[/tex]

                = [tex]\frac{4}{13}[/tex]

The probability that the card drawn is either a queen or a heart is 4/13

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6. The solid line is the parent function, f(x). Which of the following dotted line graphs shows the translation f(x) = f(x)

Answers

The function that is gotten after transformation is; f(x - 1) = -2x - 4

How to Interpret the Graph Transformation?

We are told that the parent function is f(x).

Now, after transformation, the function becomes;

f(x) = f(x - 1)

Now, the solid line graph has;

y-intercept = -2

x intercept = 1

Slope = -2/1 = -2

Thus, equation is;

f(x) = -2x - 2

Thus, for f(x - 1), what it means is that we will plug in (x - 1) for x in the parent function to get;

f'(x - 1) = -2(x - 1) - 2

= -2x -2 - 2

= -2x - 4

The graph that represents the function after transformation is as attached.

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Complete question is;

The solid line is the parent function, f(x). Which of the following dotted line graphs shows the translation f(x) = f(x - 1)?

Let P(t) denote the population of bacteria in a
Petri disht hours after bacteria are introduced to the environment
of the Petri dish. Suppose that the initial population of bacteria
is known to be 5000, and that the bacteria population doubles
every 6 hours. Assume that the population can grow indefinitely.

Give a formula for P(t).

Answers

well, if the population is doubling from whatever they happen to be, so that means the growth rate is 100%, so if they're hmmm "g", then later they become "2g", or doubled, and the later becomes "4g" and so on, so the rate is simply 100%, because "g" plus "g" is just 2g, and "2g" plus "2g" is just 4g and so on, anyhow

[tex]\textit{Periodic/Cyclical Exponential Growth} \\\\ A=P(1 + r)^{\frac{t}{c}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &5000\\ r=rate\to 100\%\to \frac{100}{100}\dotfill &1\\ t=hours\\ c=period\to &6 \end{cases} \\\\\\ A=5000(1 + 1)^{\frac{t}{6}}\implies A=5000(2)^{\frac{t}{6}}\implies {\Large \begin{array}{llll} P(t)=5000(2)^{\frac{t}{6}} \end{array}}[/tex]

Use £1 = 9.60 francs and £1 = 240 pesetas to work out how much 1 franc is in
pesetas.

Answers

Answer:

1 franc = 25 pesetas

---------------------------------

Given:

£1 = 9.60 francs and £1 = 240 pesetas

It gives us:

9.60 francs  = 240 pesetas

Divide both sides by 9.60 to find the rate:

1 franc = 240/9.60 pesetas1 franc = 25 pesetas

Tanisha has 51 m of fencing to build a
three-sided fence around a rectangular
plot of land that sits on a riverbank. (The
fourth side of the enclosure would be the
river.) The area of the land is 304 square
meters. List each set of possible
dimensions (length and width) of the
field.
Possible dimensions #1:
meters by
meters.
Possible dimensions #2:
meters by
meters.

Answers

Answer:

Two sets of dimensions are possible:

              L(m)   W(m)   Area(m^2)   Fence (m) Perimeter

Set 1         19        16       304              51

Set 2         32      9.5      304              51

Step-by-step explanation:

Let's set L and W for the Length and Width of the perimeter.  We know that:

Area = L*W

Area = 304 m^2

Perimeter = 51 m

Let's say that the side bounded by the river is the length side.   No fence is required for that portion, so the fencing for the perimeter is given by:

Perimeter, P = L + 2W

P = 51 m

We can write:   L+2W=51 m

Rearrange to isolate one of the two variables.  Lets pick L:

 L+2W=51

 L=51-2W

L = (51-2W)

Now use this in the area equation:

304 m^2 = L*W

304 m^2 = (51-2W)*W

304 m^2 = (51-2W)*W

304 m^2 = 51W-2W^2

Arrange this in the standard form of a quadratice equation and solve:

-2W^2+51W-304 m^2 = 0

W = 16 and 9.5 meters

W = 16 m

Since L=51-2W

 L=51-2*(16)

L = 51-32

L = 19 m

Area = L*W

L*W = 304 m^2

(19m)W = 304 m^2

W =  16 m

Check:

Does a length (L) of 19 m and a width (W) of 16 m give an area of 304 m^2 and a fencing perimeter of 51 m if one of the L sides is the river?

Area = (19 m)*(16 m) = 304 m^2  YES

Per.  = 2*(16)+ 19 = 51 m  YES

W = 9.5 m

Ding the same calculation for a width of 9.5 m also satisfies all the equations, as per above.  

Both values of W are valid, so the twos sets of possible dimensions are:

                   L(m)    W(m)   Area(m^2)   Fence (m) Perimeter

Set 1          19      16       304              51

Set 2          32      9.5      304              51

Name the x- and y - intercepts for the equation:
5x - 3y = 15

Answers

Answer:

Red=X-Int: (3,0) Y-int: (0,-5)

Step-by-step explanation:

To find the y and x intercepts you have to plug in the 0 for the variable. You'd get 5(0)-3y=15 you get this by plugging in the 0 for x and then you solve. 5 x 0 is 0 so you'd get -3y=15 divide -3 on both sides and get y=--5 meaning that is the y-intercept. You'd do the same when you look for the x-int. Just that you'd plug in a 0 for y instead of x. Which is 5x-3(0)=15. -3 x 0 is 0. So you'd have 5x=15 divide both sides by 5 and you'd get x=3 meaning that is the x intercept.

(Hopefully you were able to understand how I got the x and y intercepts for this equation)

Daliyah is given one point on a line as (3,−1) and the slope of the line as −5.

Answers

The y-intercept of the line having point (3,−1) and slope -5 is 14.

The equation of a line in the slope-intercept form is:-

y = mx+c

where 'm' is the slope and 'c' is the y-intercept.

here, m= -5

∴ y = -5x + c  .........(Partial equation)

to find b substitute (3,-1) into the partial equation

where,

x= 3 and y= -1 by substituting the values,

-1 = (-5)×3 + c => c = 15 - 1

c = 14

Thus, the value of the y-intercept is 14.

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The correct question is:-

Daliyah is given one point on a line as (3,−1) and the slope of the line as −5. what is the y-intercept of the line?

if f(x)=-2x+5, find x so f(x)=3

Answers

Answer:

f(x)=-2x+5

f(x)=3

then,

f(x)=-2x+5

or, 3=-2x+5

or, 2x=5-3

or,2x=2

or, x=2÷2

x=1

so, the value of x is 1

Answer:

x=1

Step-by-step explanation:

3= -2x+5

-5.       -5

-2= -2x

/-2. /-2

1=x

hopes this helps

Pleaseeee helppppp meeeeee

Answers

Answer:

C

Step-by-step explanation:

You can do trial and error since it is a multiple ans question

Answer:

c

Step-by-step explanation:

do trial and error it's right the answer is c

Find equivalent expressions of 3 2x−9−4x 11 5x−x. choose three expressions.

Answers

Answer:

[tex]-(220x^2-5x+9)[/tex]

Step-by-step explanation:

[tex]3*2x-9-4x*11*5x-x\\\\-4*11*5xx+3*2x-x-9\\\\-4*11*5xx+6x-x-9\\\\-220x^2 +6x-x-9\\\\-44 5x^2 +6x-x-9\\\\-220x^2+6x-x-9\\\\-220x^2 +(6x-x)-9\\\\-220x^2+5x-9\\\\(-(220x^2-5x+9))[/tex]

Factor -1 out of -220x^2 +5x-9

20. Keith is offered an interest rate of 8.27% for a
loan with continuous compounding. Calculate
his equivalent rate with simple compounding.
[A] 0.0795 or 7.95%
[B] 0.0998 or 9.98%
[C] 0.0106 or 1.06%
[D] 0.0863 or 8.63%
[E] 0.1108 or 11.08%

Answers

Keith's equivalent rate with simple compounding is 0.0998 or 9.98%.

The Correct option is (B).

What is Compound Interest?

The yearly interest rate is raised to the number of compound periods minus one, and the starting principal amount is multiplied by both of these factors. The resulting value is subsequently deducted from the loan's entire original amount.

Given:

Keith is offered an interest rate of 8.27% for a loan.

Now, using the following formula:

r = ([tex]e^{(i/n)[/tex] - 1) x n

where r is the equivalent rate with simple compounding, i is the interest rate with continuous compounding, and n is the number of compounding periods per year.

We have, i = 8.27%

Also assume that the number of compounding periods per year is 12, since many loans are compounded monthly.

Then,

r = ([tex]e^{(0.0827/12[/tex]) - 1) x 12

= (1.0082 - 1) x 12

= 0.0082 x 12

= 0.0984 or 9.84%

Hence, The equivalent rate is 0.0984 or 9.84%.

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Estimation Gabe goes to the mall. If k is the number of items he bought, the
expression 12.92k + 27 gives the amount he spent in dollars at one store. Then he
spent 20 dollars at another store. Find the expression which represents the amount
Gabe spent at the mall. Then estimate how much Gabe spent if he bought 2 items.

Answers

The total spent at the mall by Gabe is $72.84 and the expression which represents the amount is 12.92 k + 27 + 20 or 12.92 k + 47.

What is expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement.

Given:

12.92 k + 27, where k is the number of items bought,

Calculate the  expression which represents the amount Gabe spent at the mall as shown below,

Total amount = Amount spent in one store + Amount spent in the second store

Total amount = 12.92 k + 27 + 20

Calculate the estimate of Gabe spent by putting  k = 2,

Total spent in mall = 12.92 × 2 + 27 + 20

Total spent in mall = 25.84 + 47

Total spent in mall = $72.84

Therefore, the total spent at the mall by Gabe is $72.84, and the expression which represents the amount is 12.92 k + 27 + 20 or 12.92 k + 47.

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find f. f ''(x) = x−2, x > 0, f(1) = 0, f(3) = 0

Answers

Answer:

Step-by-step explanation:

Here we have the second derivative of a function and we need to go back to the original function. This situation is inverse of taking derivative which is called antiderivative or integral. But because we have the second derivative, we have to integrate twice because the first integral will give me the first derivative then the second integral will give me the function itself.

1. Let's start taking the 1st integral of x-2 which is x²/2-2x+C1

2. Take the 2nd integral which is the integral of the 1st one

x³/6-2x²/2+C1x+C2

remember: the integral is the inverse of derivative, that means we have to add 1 to the power of x and divide by that power. I did that in steps 1 and 2.

3. After simplifying the second term, f(x)=x³/6-x²+C1x+C2 this is the function, but I have to find C1 and C2 the constants. We can use the two conditions given. the 1st one means that when x=1 , y=0

0=1/6-1+C1+C2 now combine like terms and move them to the left side of the equation C1+C2=5/6

the 2nd condition means that when x=3 , y=0

0=27/6-9+3C1+C2 after simplifying 3C1+C2=9/2

4. We got 2 equations with 2 variables C1 and C2, we can solve these system of equations. You can eliminate C2 and find C1 which is 11/6 then plug in C1 in any of the two equations to find C2, which is -1

5. Last step substitute C1 and C2 in the function from step 3 and you will get f(x)=x³/6-x²+11x/6-1

Please help me solve this algebraic expression

Answers

Answer:

Step-by-step explanation:

4+5(7)

4+ 35

39

I got this answer by simply plugging in the number that was given because it said a =7 I plugged in 7 instead of using a. The same goes to b it said that b=4 so then i plugged in 4 instead of using b.

Answer:
4+5(7)
4+ 35
39

Nadia typically type 32 word per minute, but her rate may vary by a much a 5 word per minute. Let x be the actual rate at which Nadia type. What i the range of rate, in word per minute, that Nadia could type?

Answers

The range of rate that Nadia can type is 27 to 37.

We will calculate the lower and upper limit stating the minimum and maximum number of words Nadia can type in a minute. It will depict the range of rate.

Minimum number of words = 32 - 5

Performing subtraction on Right Hand Side of the equation

Minimum number of words = 27

Maximum number of words = 32 + 5

Performing subtraction on Right Hand Side of the equation

Minimum number of words = 37

Hence, Nadia's range of word typing is 27 to 37 per minute.

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