the probability that Lindsay will choose three mystery books is 0.1141 or 1141/10,000 as a fraction.
What's the probability that they will all be mysteries?Lindsay has 11 mystery books and 6 nonfiction books. The probability of Lindsay choosing one of her mystery books first is 11/17. Once she has chosen one mystery book, there are 10 remaining, so the probability of her choosing another one is 10/16.
Finally, there are 9 mystery books remaining when she chooses her third book, making the probability of her choosing one of her mystery books 9/15.
Thus, the probability that Lindsay chooses three mystery books is:P(mystery book 1 AND mystery book 2 AND mystery book 3)
= P(mystery book 1) * P(mystery book 2| mystery book 1) * P(mystery book 3| mystery book 1 and book 2)
P(mystery book 1) = 11/17P(mystery book 2| mystery book 1)
= 10/16P(mystery book 3| mystery book 1 and book 2)
= 9/15
Therefore, P(mystery book 1 AND mystery book 2 AND mystery book 3) = (11/17) * (10/16) * (9/15)
= 0.1141 (rounded to four decimal places)
Thus, the probability that Lindsay will choose three mystery books is 0.1141 or 1141/10,000 as a fraction.
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Help me please!! T^T
The length of line FG is 16 units
How to find length of FGThe length of FG is equal to length GH that is to say
line FG = line GH
From the problem, we have that
FG = x + 11
GH = 3x + 1
Equation both lines
x + 11 = 3x + 1
collecting like terms
11 - 1 = 3x - 1
10 = 2x
rearranging and isolating x
2x = 10
x = 5
The line FG = x + 11 = 5 + 11 = 16 units
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based on derivative how many times can function cross the x-asix
Based on the derivative, a function can cross the x-axis a certain number of times depending on the number of times the derivative changes sign.
A derivative is a mathematical tool that measures the rate of change of a function at a specific point. Specifically, it is the slope of the tangent line to the function at that point. The derivative can be used to determine where a function is increasing, decreasing, or reaching a maximum or minimum value.
When a function crosses the x-axis, it means that the y-value of the function is equal to zero. In order for a function to cross the x-axis, it must change sign from positive to negative or vice versa. This happens when the function passes through a maximum or minimum point.
If the derivative of the function is positive at a point, it means that the function is increasing at that point. If the derivative is negative, the function is decreasing. If the derivative is zero, it means that the function is neither increasing nor decreasing, and it could be at a maximum or minimum point.
Therefore, the number of times a function can cross the x-axis depends on the number of times the derivative changes sign. If the derivative changes sign twice, the function can cross the x-axis twice. However, if the derivative changes sign an odd number of times, the function can only cross the x-axis once.
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Which shows the factored form of x2 – 12x – 45?
Answer:
(x - 15) ( x + 3)
Step-by-step explanation:
x² - 12x - 45
= x² - (15 - 3)x - 45
= x² - 15x + 3x - 45
= x(x - 15) + 3(x - 15)
= (x - 15) ( x + 3)
HELPPPPP!!!!!!!!!(Please don't answer if your not sure
Answer:
D
Step-by-step explanation:
W/-15=D
\(-\frac{W}{15}\)=D
Where is the removable discontinuity of f(x) located? x = –5 x = 0 x = –2 x = 5
On solving the provided question we can say that - the removable discontinuity of f(x) located is -5
What is discontinuity ?Discontinuous functions in graphs are those that have no connections to one another. Discontinuities come in three different flavors: removable, jump, and infinite.. If the left limit and the right limit of a function, f(x), are both different, then the function has a first-kind discontinuity at x = a. a characteristic that cannot be mathematically continuous. Continuous functions allow you to sketch without having to lift your pen. In such a case, the function is said to as discontinuous.
here,
f(x) = \(\frac{x+5}{x^2+3x-10}\)
\(x^2+3x-10\)
x(x+5) - 2(x+5)
(x+5 )(x-2 )
x = 2, -5
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While studying the T- and B-cell immune suppressors, the nursing students learn that the most commonly used immune suppressant is:
The selection of the appropriate immune suppressant is made by healthcare professionals based on the specific needs of each patient.
The most commonly used immune suppressant in medical practice is a medication called "cyclosporine." Cyclosporine belongs to a class of drugs known as calcineurin inhibitors and is primarily used to prevent organ transplant rejection.
The activity of T-cells, which are a type of immune cell involved in the body's immune response.
Cyclosporine is also used in the treatment of various autoimmune diseases, such as rheumatoid arthritis and psoriasis, where the immune system mistakenly attacks the body's own tissues.
T-cell activity, cyclosporine helps to reduce the inflammatory response and prevent further damage to the affected organs or tissues.
It's important to note that there are several other immune suppressants available, and the choice of medication depends on the specific condition being treated, the patient's overall health, and individual factors.
A commonly used immune suppressants include corticosteroid methotrexate, azathioprine, mycophenolate mofetil, and tacrolimus.
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Complete question:
While studying the T- and B-cell immune suppressors, the nursing students learn that the most commonly used immune suppressant is what?
does the value of an expression mean the answer?
Answer:
The value of a mathematical expression is the result of the computation described by this expression when the variables and constants in it are assigned values. The value of a function, given the value(s) assigned to its argument(s), is the value assumed by the function for these argument values.
Step-by-step explanation:
Yes, the value of an expression does mean the answer.
The value of an expression is a variable that is assigned to a number.
Lets say we have 3n + 2 = 10.
"n" is the variable and we need to find the value of it.
In that kind of question, that is the answer for an expression.
But there are cases where we have the value and we need to solve with it. Then, the value would not be the answer.
Best of Luck!
Could you guys help me with this I’m stressed out ill give brainliest please don’t answer if you don’t know thank you
Answer:
$146.66
Step-by-step explanation:
I bopped this into a percentage calculator and this is what I got
To find the quotient of 3 divided by 6/1
Answer:
1/3
Step-by-step explanation:
3÷6/1 is the same thing as 3÷6
and when reducing to the lowest term gives 1÷3 or 1/3
A small publishing company is releasing a new book. The production costs will include a one-time fixed cost for editing and an additional cost for each book printed. The total production cost C (in dollars) is given by the function =C+15.95N550, where N is the number of books.
The total revenue earned (in dollars) from selling the books is given by the function =R32.80N.
Let P be the profit made (in dollars). Write an equation relating P to N. Simplify your answer as much as possible.
The equation for the profit is 16.85N + 550
How to calculate the value?Production costs include all direct and indirect costs incurred by businesses when producing a product or providing a service. Labor, raw materials, consumable manufacturing supplies, and general overhead are all examples of production costs.
The total cost incurred by a business to produce a specific quantity of a product or provide a service is referred to as the cost of production. Labor, raw materials, and consumable supplies are examples of production costs
Given that the total production cost C (in dollars) is given by the function C = 15.95N + 550,
where N is the number of books.
The total revenue earned (in dollars) from selling the books is given by the function R = 32.80N.
Therefore, profit will be:
= Revenue - Cost
= 32.80N - 15.95N + 550,
= 16.85N + 550
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Prove that every infinite decimal representing a rational number is recurring and, furthermore that if the fraction in lowest terms representing a fraction is a/b then the number of recurring digits in its decimal representation is less than b.
We will prove two statements. First, every infinite decimal representing a rational number is recurring. Second, if a rational number is represented by a fraction in lowest terms as a/b, then the number of recurring digits in its decimal representation is less than b.
Statement 1: Every infinite decimal representing a rational number is recurring. Let's consider a rational number represented as a/b, where a and b are integers and b ≠ 0. The decimal representation of this rational number can be expressed as a quotient a/b in long division.
In long division, the remainder can have a maximum of b - 1 possible values because it ranges from 0 to b - 1. Since there are only b possible remainders, at least two remainders must be equal due to the pigeonhole principle. This means that at some point in the long division process, we encounter a repeated remainder. Once a repeated remainder is encountered, the long division process will continue in a repeating pattern. Therefore, the decimal representation becomes recurring, where the repeating pattern corresponds to the digits after the decimal point. Hence, every infinite decimal representing a rational number is recurring.
Statement 2: If a rational number is represented by a fraction in lowest terms as a/b, then the number of recurring digits in its decimal representation is less than b. Let's consider a rational number a/b in lowest terms, where a and b are integers and b ≠ 0. We know that the decimal representation of this rational number is recurring.
In the recurring part of the decimal representation, the repeating pattern can have a maximum length of b - 1. This is because if the repeating pattern has a length equal to or greater than b, we can simplify the fraction further, contradicting the assumption that it is in lowest terms. Therefore, the number of recurring digits in the decimal representation of a rational number a/b, in lowest terms, is less than b.
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Sara spends $x on pens which cost $2.50 each.
She also spends $(x - 14.50) on pencils which cost $0.50 each.
The total of the number of pens and the number of pencils is 19.
Write down and solve an equation in x.
What is the probability of getting an odd number 1-10?
Answer:
1/2 - Half of the numbers are odd
a group of 24 people equally shared 14 pounds of ground beef. how many pounds of ground beef did each person get?
On solving the provide question, we can say that by unitary method each person get = 24/14 = 1.7142857143 pounds of beef
What is unitary method ?The unit technique is an approach to problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value. The unit method, to put it simply, is used to extract a single unit value from a supplied multiple. For instance, 40 pens would cost 400 rupees, or the price of one pen. The process for doing this may be standardized. a single country. anything that has an identity element. (mathematics, algebra) (Linear algebra, mathematical analysis, mathematics of matrices or operators) Its adjoint and reciprocal are equivalent.
here,
a group of = 24 people
equally shared = 14 pounds of ground beef.
each person get = 24/14 = 1.7142857143 pounds of beef
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The length of an arc of a circle is 7.5 cm. The corresponding sector area is 37.5 cm². The radius is 5cm.
Find the angle subtended at the centre of the circle by the arc.
Answer: Let us assume that the radius of the circle is r where the corresponding sector area and arc length are 37.5sq. cm and 7.5cm. From the given arc length of 7.5cm, the subtended angle at the circle center theta radian can be Theta /2π =7.5/2πr or
Theta radian =7.5/r. For the radian, 7.5/r subtended angle sector area can be 7.5/r/2π^2 or 7.5/2πr*πr^2 or 7.5r/2. We already have given sector area as 37.5, then 7.5r/2=37.5, or r will be 37.5*2/7.5 which gives us 10.
Step-by-step explanation:
Let us assume that the radius of the circle is r where the corresponding sector area and arc length are 37.5sq. cm and 7.5cm
By the arc length of 7.5cm, the subtended angle at the circle center theta radian will be
Theta /2π =7.5/2πr or
Theta radian =7.5/r
For the 7.5/r radian subtended angle sector area is
7.5/r/2π^2 or 7.5/2πr*πr^2 or 7.5r/2
We have given the sector area 37.5, so now 7.7r/2=37.5, or
r=37.5*2/7.5=10cm
Simplify (3b^8b^-2)3
–10(d + 56) = 80 two step equations
Answer:
D=-64
Step-by-step explanation:
-10(d+56)=80
d+56=8
d=8-56
d=-64
Find the intersection point between the lines of equations:
2x-y+6=0 and 2x+3y-6=0
Step-by-step explanation:
The two equation will intersect each other at the point which will be the solution of the given two equations , and the given equations are ,
\(\implies 2x -y +6=0\\\\\implies 2x + 3y -6=0\)
On subtracting the given equations we have,
\(\implies -y - 3y +6 -(-6) = 0 \\\\\implies -4y = -12 \\\\\implies y = -12/-4\\\\\implies y = 3 \)
Put this value in any equation , we have ,
\(\implies 2x -3 +6 =0\\\\\implies 2x = -3 \\\\\implies x =\dfrac{-3}{2} \\\\\implies x =-1.5 \)
Hence the lines will Intersect at ,
\(\implies\underline{\underline{ Point=(-1.5, 3)}}\)
for the first one x = 1/2 y-3" and y = 2 x + 6 and for the other one is x = − 3 /2 y+ 3 and y= − 2 /3 x + 2
how i did this Step 1: Add -3y to both sides.
Step 2: Add 6 to both sides.
Step 3: Divide both sides by 2.
At a wedding reception, the guests have a choice of chicken or steak for dinner. Do
more people prefer chicken or steak? Do more people under 40 prefer chicken or
steak?
Chicken Steak
Total
Under 40
39
21
60
40 or older
34
31
65
Total
73
52
125
a) More people prefer chicken. Also, more people under 40 prefer chicken.
b) More people prefer steak. Also, people under 40 prefer steak.
c) More people prefer chicken. However, more people under 40 prefer steak.
O d) More people prefer steak. However, more people under 40 prefer chicken.
i
Answer:
i think its a
Step-by-step explanation:
Karla buys t-shirts to promote her local business. She develops the inequality t > 100 for the number of t-shirts she needs to sell in order to make a profit. Answer the following questions. If she is selling each shirt for $15 dollars, how much money did Karla spend to make the t-shirts? How do you know?How much money would Karla have lost if she sells only 90 t-shirts?
Karla spent $1500 to make the shirt and will lose $150 if she sells only 90 t-shirts.
What is an inequality?An inequality is an expression that shows the non equal comparison of two or more numbers and variables.
Let t represent the number of t-shirts she needs to sell in order to make a profit. Since:
t > 100 and the price is $15 per shirt, hence:
Money spent = $15 * 100 = $1500
Money lost in sell 90 shirts = (100 - 90) * 15 = $150
Karla spent $1500 to make the shirt and will lose $150 if she sells only 90 t-shirts.
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Write the decimal as a fraction or a mixed number. Write your answer in simplest form.
0.8806
0.8806 =
Answer: 1 / 8806
Step-by-step explanation: not no noticeable way of it being a mixed number.
How many solutions does 2x+2-3x=3x-4
Answer:
1 solution (x = 1.5)
Step-by-step explanation:
2x + 2 - 3x = 3x - 4
First, combine like terms
2 - x = 3x - 4
Add 4 to both sides
6 - x = 3x
Add x to both sides
6 = 4x
Divide both sides by 4
1.5 = x
If you're looking for all it's forms,
Exact form: \(\frac{3}{2}\) (or 3/2)
Decimal form: 1.5
Mixed Number form: \(1\frac{1}{2}\) (or 1 1/2)
OR
Two solutions because it's a quadratic equation:
1. x = -1/2 = -0.500
2. x = 2
Suppose we want to choose 6 letters without replacement from 10 distnict letters. how many ways can this be done if the order of the choices is relavant
The number of ways this can be done is 151200 if they choose 6 letters without replacement from 10 distinct letters.
What are permutation and combination?A permutation is the number of different ways a set can be organized; order matters in permutations, but not in combinations.
We have:
Suppose we want to choose 6 letters without replacement from 10 distinct letters.
Number of letters = 10
Number of letters need to select = 6
Order is important.
A number of ways:
C(10, 6) = 10!/(10-6)!
= 10!/(4)!
= 151200
Thus, the number of ways this can be done is 151200 if they choose 6 letters without replacement from 10 distinct letters.
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I need help with my math homework
VW = 6
hope it helps...!!!
What is the standard form of this expression?
(4y - 9)(2y- 3)
Answer: 8y^2−30y+27
Step-by-step explanation:
FOIL!!
PLEASE HELP DUE IN AN HOUR NO LINKS PLEASE.
Answer:
y = 3/2 when x = 15
Step-by-step explanation:
y = k / √1+x
2 = k / √1+8 = k/3
k = 6
y' = 6 / √1+15 = 6/4 = 3/2
what is the equation of the line?
Answer:
x = -9 also called undefined slope.
Step-by-step explanation:
And if the line is like this ____________ it is zero slope and the equation is the number that is passes through the y- intercept.
Hope this helps.
x = -9
Answer:
x=-9
I hope this is good enough:
Suppose we are given the following information.
Answer: the lines are neither parallel nor perpendicular.
To determine whether two lines are parallel, perpendicular, or neither, we need to calculate their slopes. The slope of a line is a measure of how steep the line is. It is calculated by dividing the difference in the y-coordinates of the two points by the difference in the x-coordinates.
For line 1, the slope is calculated as follows: (4-(-5))/(1-(-2)) = 9/3.
For line 2, the slope is calculated as follows: (4-6)/(6-0) = -2/6 = -1/3.
Since the slopes of the two lines are different, they are not parallel.
To determine whether two lines are perpendicular, we need to check if the product of their slopes is -1. The product of the slopes of line 1 and line 2 is (9/3)*(-1/3) = -3/9 = -1/3. Since this is not equal to -1, the lines are not perpendicular.
Therefore, the lines are neither parallel nor perpendicular.
Answer: perpendicular
Step-by-step explanation: Line 1 has the following points
(-2,5) and (1,4)
We know that the equation of a straight has the form
y=mx+c
m=gradient or the slope
c= where the graph crosses the y axis
let us label our points
let(x1, y1)=(-2, -5)
let (x2, y2)=(1, 4)
Does not matter the labelling of points
we now need to find the gradient or the slope
It is given by the following formula
m=(y2-y1)/(x2-x1)
substitute the values into formula
m=(4--5)/(1--5)=9/3=3
Reminder that two negatives facing each other gives a postive
m=3
We substitute this into our general equation of a straight line to get the following:
y=3x+c
We now to solve for c
and we can use any of the two co-ordinate points
lets use(1,4) this means x=1 and y=4
substitute into the above equations and solve for c
4=3*1+c
4=3+c
c=1
the equation for Line1 is y=3x+1
We now look at line2
(0,6) and (6,4)
let(x1, y1)=(0,6) and (x2, y2)=(6,4)
We following the same procedure as for the first line
we look for the gradient or slope m
m=(y2-y1)/x2-x1)
m=(4-6)/(6-0)=-2/6=-1/3
We then substitute this value into the general equation for a line
y=mx+c
y=-1/3x+c
we now need to solve for c
we can choose any of the co-ordinate points to substitute into the equation
say we choose(0,6) this means x=0 and y=6
y=-1/3x+c
6=-1/3 *0+c
6=0+c
c=6
we then get the equation for line 2 which is
y=-1/3x+6
Line 1 has a gradient of 3
Line2 has a gradient of -1/3
when we multiply the two together we get -1
therefore the two line are perpendicular to each other
m1*m2=-1
gradient of line multiplied by the gradient of line 2 gives -1
perpendicular line
How do you calculate the specific heat of a substance?
The specific heat of a substance can be calculated by using the formula q = m × c × ΔT
Specific heat is the amount of heat energy required to raise the temperature of one unit of mass of a substance by one degree Celsius
The specific heat of a substance can be calculated using the following formula:
q = m × c × ΔT
where:
q is the amount of heat energy transferred to or from the substance
m is the mass of the substance
c is the specific heat of the substance
ΔT is the change in temperature of the substance
To calculate the specific heat, we rearrange the equation as follows:
c = q / (m × ΔT)
To perform the calculation, you need to know the mass of the substance, the amount of heat energy transferred to or from the substance, and the change in temperature of the substance. You can then plug these values into the equation to find the specific heat. The units of specific heat are J/(kg*K) in SI units.
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difer from the true proportion by more than 2% ? A previous study indicates that the proportion of lefthanded sclontists is 9%. Round up to the nearest whicie number. Duestion 13 A. 1.218 B. 1,109 C. 14 D.767
The total number of samples will be 1109 .
Given ,
Margin of error 0.02
Here,
According to the formula,
\(Z_{\alpha /2} \sqrt{pq/n}\)
Here,
p = proportions of scientist that are left handed
p = 0.09
n = number of sample to be taken
Substitute the values,
\(Z_{0.01} \sqrt{0.09 * 0.91/n} = 0.02\\ 2.33 \sqrt{0.09 * 0.91/n} = 0.02\\\\\\\)
n ≈1109
Thus the number of samples to be taken will be approximately 1109 .
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