a)The chance that no call will be handled in 10 seconds is 0.0067
b) 0.2642 percent of classes will be processed in two seconds at least.
what is percentage?A figure or ratio that reflects a fraction of 100 is known as a percentage in mathematics. In addition to ratios, fractions, and decimals, it is one of the ways to depict a dimensionless connection between two numbers. Frequently, the symbol "%" is used after the number to indicate percentages.
given,
The number of phone calls handled by the communications switch in a 10-second period is represented by the Poisson random variable n.
a)the chance that no call will be handled in 10 seconds is
for 10 sec= λ= 10*0.5 = 5 calls per sec
P(X=0) [tex]e^{-5}[/tex](5)° / 0!
P(X=0)= 0.0067
b) percent of classes will be processed in two seconds at least is
for 2 sec =λ = 0.5 *2 = 1
P(X≥2) = 1- P(X<2)
= 1-[P(X=2) + P(X=1)]
=0.2642
a)The chance that no call will be handled in 10 seconds is 0.0067
b) 0.2642 percent of classes will be processed in two seconds at least.
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How many solutions can 2 linear equations have?
The number of solutions that a system of 2 linear equations in 2 variables can have is explained below.
In the question ,
it is given that ,
the system of 2 linear equations in 2 variables .
we know that the linear equations represent a line .
(i) the two linear equations will have No Solution / Zero Solution if the two lines are parallel .
(ii) the two linear equations will have One Solution/Unique Solution if the two line intersect at a point .
(iii) the two linear equations will have infinitely many solution if the lines overlap on each other .
Therefore , the number of solutions of linear equation is explained above .
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Gordon types 2,240 words in 8 minutes.Find the unit rate .
Pls someone help and explain
Answer:
Gordon types 280 words per minute
Step-by-step explanation:
2240word/8min
280/min is the same as 4.6/second (280/60)
There is another particular medicine that is modeled by the following:
f(t) = -15t² + 120t
1. Where f(t) is the amount of medication (in mg) in the bloodstream at time t (in hours).
2. Determine the maximum amount of medication in the bloodstream.
3.Using a function, determine the concentration of medication in the
bloodstream after 2 hours.
Answer:
Step-by-step explanation:
1. The function f(t) represents the concentration of medication in the bloodstream over time. The function has a parabolic shape, with the maximum value at t = 8 hours.
To find the maximum concentration of the medication, we can set the derivative of the function equal to 0 and solve for t. The derivative of f(t) is:
f'(t) = -30t + 120
Setting this equal to 0 and solving for t, we get:
-30t + 120 = 0
-30t = -120
t = 4
Therefore, the maximum concentration of the medication occurs at t = 4 hours. At this time, the concentration of the medication is:
f(4) = -15(4)^2 + 120(4) = 120 mg
It's important to note that this function represents the concentration of the medication in the bloodstream, not the total amount of medication that has been taken. The total amount of medication taken over a given time period can be found by integrating the function over that time period.
2. To determine the maximum amount of medication in the bloodstream, we need to find the maximum concentration of the medication and then multiply that concentration by the volume of the bloodstream.
We have already determined that the maximum concentration of the medication is 120 mg/L. The volume of the bloodstream in an adult is approximately 5 liters. Therefore, the maximum amount of medication in the bloodstream is:
120 mg/L * 5 L = 600 mg
This is the maximum amount of medication that can be present in the bloodstream at any given time. It's important to note that this amount may be affected by various factors, including the rate at which the medication is metabolized and eliminated from the body.
3. To determine the concentration of medication in the bloodstream after 2 hours, we can substitute 2 for t in the function f(t) and solve for the concentration. The function for the concentration of medication in the bloodstream is:
f(t) = -15t^2 + 120t
Substituting 2 for t, we get:
f(2) = -15(2)^2 + 120(2) = 60 mg/L
Therefore, the concentration of the medication in the bloodstream after 2 hours is 60 mg/L. It's important to note that this represents the concentration of the medication at a specific point in time, not the total amount of medication that has been taken. The total amount of medication taken over a given time period can be found by integrating the function over that time period.
The probability of an unfavorable outcome plus the probability of a favorable outcome equals 1.
O True
O False
Your answer is False
How many roots does the equation x3 3x2 4 0 have?
The number of roots of the given equation x³ -3x² + 4 = 0 is equal to 3 which are -1, 2, 2.
As given in the question,
Given equation is written as:
x³ -3x² + 4 = 0
Number of roots of the given equation are as follow ;
Let f(x) = x³ -3x² + 4
For x = 1
f(1) = 1³ - 3(1)² + 4
= 2 ≠ 0
x = 1 is not the roots.
Now, x = -1 ,
f(-1) = (-1)³ - 3(-1)² + 4
= -1 -3 + 4
= 0
x = -1 is the roots of the given equation x³ -3x² + 4 = 0
x³ -3x² + 4 = 0
⇒x³ + x² -4x² -4x + 4x + 4 =0
⇒x² ( x + 1) - 4x( x + 1) + 4(x+1) =0
⇒(x+1) ( x² -4x +4 ) = 0
⇒(x+1)( x - 2 )² = 0
⇒ x = -1, 2, 2
Therefore, the number of roots of the given equation x³ -3x² + 4 = 0 are 3 and given by x = -1 , 2, 2.
The above question is incomplete , the complete question is :
How many roots does the equation x³ -3x² + 4 = 0 have ?
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The volume of a rectangular prism is 6x3 + 19x2 + 2x - 3
and the height is x + 3. What is the area of the base of the prism?
To find the area of the base of the rectangular prism, we need to find the expression for the area of a rectangle with dimensions equal to the dimensions of the base of the prism.
The volume of a rectangular prism is given by the formula:
Volume = length * width * height
Substituting the given expressions for the volume and the height into this formula, we get:
6x3 + 19x2 + 2x - 3 = (length * width) * (x + 3)
Expanding the right-hand side of the equation, we get:
6x3 + 19x2 + 2x - 3 = length * width * x + length * width * 3
Matching the terms on the left-hand side of the equation with the corresponding terms on the right-hand side, we can see that the expression for the area of the base of the rectangular prism is:
length * width = 6x3 + 19x2 + 2x - 3 - length * width * 3
Simplifying this expression, we get:
length * width = -3x3 - 17x2 - 2x + 3
Therefore, the area of the base of the rectangular prism is given by the expression -3x3 - 17x2 - 2x + 3.
A(n) ____ is a numerical summary of a sample.
A statistic is a numerical summary of a sample.
A sample statistic is explained as any number computed from a sample of data.
Examples include the sample average, median, sample standard deviation, and percentiles. A statistic is a random variable because it is based on data obtained by sampling technique in which each sample has an equal probability of being chosen.
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The perez family and the smyth family are each taking road trips. The perez family travels at an average rate of 65 miles per hour and the smyth family travels at an average rate of 50 miles per hour. How far does each family travel after 6 hours?.
Answer:
90 miles.
Step-by-step explanation:
65 - 50 = 15
In each hour they have a difference of 15 miles.
In six hours:
6 * 15 = 90 miles
In Angle abc and angle pqr ab:pq=4:5 and a(angle pqr)=125cm² then find a(angle abc)
In Angle abc and angle pqr ab:pq=4:5 and a(angle pqr)=125cm² then the measure of angle ABC is 100 cm².
What is the angle?Generally, To find the measure of angle ABC in the triangle ABC, we can use the fact that the ratios of the measures of the angles in a triangle sum to 180 degrees.
We are given that the ratio of the measures of angles ABC to PQR is 4:5. This means that if we let x represent the measure of angle ABC, then the measure of angle PQR is 5x/4.
The measure of angle PQR is also given to be 125 cm². We can use this to set up the equation:
5x/4 = 125
Solving for x, we find that the measure of angle ABC is:
x = 100
Therefore, the measure of angle ABC is 100 cm².
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The table shows the height of a plant as it grows. Which equation in point-slope form gives the plant's height at any time?
A) y - 21 = 7/2 (x - 3)
B) y - 21 = 7 (x - 3)
C) y - 3 = 7/2 (x - 21)
D) The relationship is nonlinear.
The equation in point slope form is y - 21 = 7(x - 3).
What is point - slope form of the line?
A line's equation in point slope form is y - y1 = m. (x – x1). As a result,
y = mx and y - 0 = m(x - 0) are the equations for a line passing through the origin with a slope of m.
To find the equation in point slope form for the given table of height of a plant first we have to find the slope.
Here
Slope = change in height / Change in time
From given table,
Change in height = 14 and Change in time = 2
⇒ Slope = 14 / 2 = 7
Now to find the point slope form.
We know that the equation in point slope form for point [tex](x_1, y_1)[/tex] and slope m is written as,
[tex]y-y_1=m(x-x_1)[/tex]
Plug [tex](x_1, y_1) = (3, 21), m = 7[/tex]
So, the equation becomes
[tex]y-21 = 7(x-3)[/tex]
Hence, the equation in point slope form is y - 21 = 7(x - 3).
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Match the size of a triangle to longest middle and shortest side
Answer:
AC is longest
BC is middle
AB is shortest
Todd drives 2,365 miles in a month. His average mpg is 20. How much will he pay in gas if gas is $3. 12 per gallon?.
Answer:
He pays:
$368.94
Step-by-step explanation:
20 miles ⇒ 1 gallon
2365 miles ⇒ A gallons
A = 2365 miles * 1 gallon / 20 miles
A = 118,25 gallons
Then:
$3.12 ⇒ 1 gallon
$B ⇒ 118.25 gallons
B = 118.25 gallons * $3.12 / 1 gallon
B = $368,94
What is the mode of the following set of data 12 11 14 10 8 13 11 9?
The mode of the given data set is 11.
A mode is defined as the value that has a higher frequency in a given set of values. It is the value that appears the most number of times.
In statistics, the value that consistently appears in a particular collection is referred to as the mode. The mode or modal value in a data collection is sometimes referred to as the value or number that occurs most frequently in the data set. In addition, to mean and median, it is one of the three measures of central tendency.
The mode is the value that occurs the most often in a given set of data.
In the data set provided here, the mode is 11, hence 11 should occur the most number of times.
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The equation s=100−5m represents the relationship between the total score on Mr. Totten's algebra quiz, s, and the number of questions a student missed, m. Which statement describes the slope in this equation?
The statement that describes the slope in this equation is that the score of each question is 5
How to determine the statement that describes the slope in this equation?From the question, we have the following parameters that can be used in our computation:
Equation: s = 100 - 5m
Also from the question, we have:
s = The total score
m = the number of questions a student missed
Recall that
s = 100 - 5m
A linear equation is represented as
y = mx + c
Where m = slope
By comparing the equations, we have
m = -5
This means that the slope is -5
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What is the width of the rectangular area?
The width of a rectangle is the smaller side length that situated vertically. Width of rectangular area = Area of rectangle/ length of rectangle
or width of rectangular area = (perimeter of rectangle /2) - length of rectangle
what is the perimeter of a shape?The perimeter is the line that goes continuously along the boundary of a geometrical shape.
How can we find the width of rectangle?the width of rectangle can be found from the area of rectangle formula or area of perimeter formula when the value of length, area and perimeter is known to us.
area = length × width
perimeter = 2(length × width)
hence, the width of a rectangle is the smaller side length along the vertical axis.
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Marcia and Becky shared some money
in the ratio 1:4
Marcia gets £18 less than Becky. How
much does Marcia receive?
The money received by Marcia = £ 6
According to the given information
The money is shared between Marcia and Becky in the ratio = 1 : 4
Let the money got by Becky = £ x
Marcia got £ 18 less than Beck = x - 18
So
Taking the ratio
[tex]\frac{1}{4}=\frac{x-18}{x}[/tex]
Cross multiply both the fractions
x = 4(x - 18)
x = 4x - 72
-3x = -72
x = 24
Money got by Beck = £ 24
Money received by Marcia = 24 - 18
= £ 6
Hence
The money received by Marcia = £ 6
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How many positive four-digit integers have a remainder of 3 when divided by 4, a remainder of 3 when divided by 5, and a remainder of 5 when divided by 13?
Step-by-step explanation:
So this below is a solution I devised myself when I was around 11 yrs old doing math competitions with my friend so… (I don’t have a name for this solution, and can’t give any reference material)
alright so notice that when you subtract the remainder from the divisor in this question, all of their the values equate to 4:
6–2 = 4
9–5 = 4
11–7 = 4
I am going to use this property to devise a method from the problem.
The property above means
(n+ 4) % 6 = 0
(n+ 4) % 9 = 0
(n+ 4) % 11 = 0
where n is the dividend
notice that for n to be in accordance with the restriction of the question, n+4 must be a multiple of 6, 9 and 11 simultaneously (common multiple)
Since the question asks for the number of “n”s that are three-digit positives…
100 <= n <= 999 (which means)
104<= n+4 <= 1003
ok, so now we have to find the common multiples of 6,9,11 within the range 104~ 1003
the least common multiple of 6,9,11 is 198.
the smallest multiple of 198 that is larger than or equal to 104 is 198, which is 1*198… the largest multiple of 198 smaller than 1003 is 990, which is 5*198
so that means we have all the way from the first multiple of 198 to the fifth multiple of 198, inclusive, which is (5–1) + 1 = 5
and there we have it!!!
the answer is 5
P.S. we could also just count the multiples, but the (5–1)+1 is there because it may not always be countable, and the +1 is there to account for the first number that was subtracted
How do you find the mean of a set?
Mean mode formula - Mean = {Sum of Observation} ÷ {Total numbers of Observations}
What does the mode mean?
By summing all the numbers in a data collection and dividing by the total number of values in the set, the mean (average) of the data set can be determined.
A data collection is ordered from least to largest, and the median is the midpoint number. A data set's mode is the number that appears the most frequently.
What are the mean, median, and example?
The most frequent number, or the one that happens the most frequently, is known as the mode. Example: Since the number 2 appears three times, more than any other number, it is the mode of the numbers 4, 2, 4, 3, and 2.
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What is the quadratic equation whose roots are 2 √ 3 and 2 − √ 3?
The quadratic equation whose roots are 2√3 and 2-√3 can be written in the form ax² + bx + c = 0.
To solve this equation, we can use the formula x = (-b ± √(b²-4ac))/2a.
Substituting the values of 2√3 and 2-√3 for x, we get:
2√3 = (-b + √(b²-4ac))/2a
2-√3 = (-b - √(b²-4ac))/2a
Subtracting the two equations, we get:
0 = √(b²-4ac)
Taking the square of both sides, we get:
b² - 4ac = 0
Rearranging the equation, we get:
ax² + bx + c = 0, where
a = 1
b = 0
c = -4ac
Therefore, the quadratic equation whose roots are 2√3 and 2-√3
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find a vector that points in the same direction as the vector (i^+j^) and whose magnitude is 9.
A vector that points in the same direction as the vector (i^+j^) and whose magnitude is 9 is (9i^/ √2 + 9j^/ √2).
Therefore the answer is 9i^/ √2 + 9j^/ √2.
The vector direction is same as i^ + j^. We can obtain a unit vector in that direction by dividing the vector with magnitude of i^ + j^, which is √(1² + 1²) = √2.
Unit vector is (i^ + j^)/ √2.
Given that the required vector is of magnitude 9. We can determine the required vector thus by multiplying the magnitude with the unit vector in the direction, that is
9×(i^ + j^)/ √2
= 9i^/ √2 + 9j^/ √2
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6 ÷ (–3) + [(4 – (–5)) × (–7)]
answer please
What are the 3 types of values?
Thousands, hundreds and tens are three types of values and there are many more.
What is value?Value in mathematics is a number that represents the outcome of a computation or function. In the aforementioned example, you may inform your teacher that 5 + 6 Equals 30 or that x + y = 9 if x = 6 and y = 3. A variable or constant can also be referred to as a value.
What is the value of 4?The number 4 is in this case in the tens column. As a result, the place value of the number four is tens or tens.
Thousands, hundreds and tens are three types of values and there are many more like ones etc. Moreover after solving any problem for unknown variable the resulting numerical solution can also be termed as value.
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If f(x) = x² + 1, then f(f(3)) = ?
Answer:
f(f(3))=101
Step-by-step explanation:
To solve this problem, first solve for f(3):
[tex]f(3)=(3)^2+1\\f(3)=9+1\\f(3)=10[/tex]
Then, insert f(3) into f(2) by substituting f(3) in place of x:
[tex]f(f(3))=f(10)\\f(10)=(10)^2+1\\f(10)=101[/tex]
PLEASE HELP IM STUCK
Answer:
option b is the answer of the above
How do you solve under root minus 16?
Answer:
4i
Step-by-step explanation:
Any negative numbers do not have any real square roots, only imaginary ones.
[tex]\sqrt{-16} = i\sqrt{16} = 4i[/tex]
hope this helps :)
What are examples of SAS congruence postulates?
The examples of SAS congruence postulates are
∆ ABC ≅ ∆DEF∆ABC ≅ ∆CEFThe SAS is stands for Side-Angle-Side congruence postulate which states that triangles are congruent if two sides and an included angle of a triangle are congruent with two sides and an included angle of a second triangle. Note that we need to include the angle between the two sides.
Example 1 : Let's say you have one triangle, ∆ABC with side lengths 5 and 10 and the angle included between those two sides is 30 degrees. If you have a second triangle, ∆DEF that also has side lengths 5 and 10 with a 30 degree angle in between, then by the SAS Postulate ∆ABC is similar to ∆DEF.
Example 2 : Point C is the midpoint of BF
so, AC = CE
Statement Reason
AC = CE C is mid point so, it
divides equal parts .
BC = CF C is mid-point
∠ACB =∠ECF Opposite angles
Thus, by the Side Angle Side postulate, the triangles are congruent i.e,∆ABC ≅ ∆CEF
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HELP PLEASE PLEASE A recipe uses 5 cups of milk to make 25 servings. If the same amount of milk is used for each serving, how many servings can be made from one gallon?
The solution is 80 servings
The number of servings that can be made from 1 gallon is 80 servings
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the number of servings from 1 gallon be = A
Now , the equation will be
The number of cups of milk = 5 cups
The number of servings from 5 cups of milk = 25 servings
So ,
The number of servings from 1 cup of milk = number of servings from 5 cups of milk / 5 cups
Substituting the values in the equation , we get
The number of servings from 1 cup of milk = 25 / 5
The number of servings from 1 cup of milk = 5 servings
Now , 1 gallon = 4 quarts
1 quarts = 2 pints
1 pint = 2 cups
So , 1 gallon = 16 cups
And , number of servings from 1 gallon = number of servings from 16 cups
So ,
The number of servings from 16 cups = number of servings from 1 cup of milk x 16
Substituting the values in the equation , we get
Number of servings from 1 gallon = 5 x 16
Number of servings from 1 gallon = 80 servings
Therefore , the value of A is 80 servings
Hence ,
The number of servings is 80 servings
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What is the smallest number divisible by 3?
The smallest number that is divisible by 3 is 3 itself. Every integer that is divisible by 3 is called a multiple of 3.
For example, some of the multiples of 3 are 6, 9, 12, 15, 18, 21, etc. All of these numbers can be obtained by multiplying 3 by an integer.
What does "divisible" mean in math?If a number evenly divides (leaves no residue) into another number, it can be divided. For instance, 34 may be divided by 2 equally, making it a divisible number. However, because doing so would result in a leftover, 34 cannot be divided by 3.
How are three divided?According to the law of three's divisibility, a number is completely divisible by three if the sum of its digits is also divisible by three. Take 308 as an example. To determine whether or not 308 is divisible by 3, add the digits together and find the sum (3+0+8=11).
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How do I follow up on SSS sickness benefit application?
The follow up on SSS loan sickness benefit application are as follows :
Sickness Benefit Application (SBA) FormAny legitimate primary ID card or document, such as an SS ID or UMID, as follows:- Driver’s License
- Passport
- Voter’s ID Card
- National Bureau of Investigation (NBI) Clearance
- Postal Identity Card
- Any other government-issued (secondary) ID cards/documents
supporting medical records, if any, for extended illness or incarceration :- Laboratory, X-ray, ECG, and other diagnostic results
- Operating room/clinical record that will support the diagnosis
For illnesses or injuries that occurred abroad, the issuing nation's official documentation must include an English translation and be properly authenticated by the Philippine Embassy or Consulate Office or properly certified by a notary public of the receiving nation.
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What is the y-intercept of the line?
A. 1
B. 1/2
C. -2
D. 0
Answer:
A.1
Step-by-step explanation:
The line crosses when Y is one and X is 0 thus creating an intercept on the y line