The probability of passing if the minimum passing grade is 70 %
is 0.3074.
What is probability?Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.
here, we have,
A quiz consists of 20 multiple-choice questions, each with 4 possible answers.
now,
n = 20, the number of questions
p = 1/4= 0.25, the probability of making a correct guess
q = 1 - p = 0.75, the probability of making an incorrect guess.
Expected success = 70% or 7 of 10.
From the binomial distribution,
P(7of 10) = ₁₀C7 p^7q^3
=120×0.000061×0.42
=0.3074
Hence, the Answer: 0.3074.
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Hot dogs come in packs of 8. While buns come in packs of twelve. What is the least number of packs you should buy in order to have the same number of hot dogs and buns?
On solving the provided question, we can say that, by Least Common Multiple the amount to buy - 4 packs of buns and 5 packs of hot dogs.
What is least common multiple?The smallest positive integer that is divisible by both a and b is known as the least common multiple, also known as the least common multiple, or the least common multiple of two numbers a and b. Least Common Multiple is referred to as LCM. The least frequent multiple of two numbers is also the least frequent multiple of both. A number and an integer are combined to create a multiple of that number. For instance, 10 is a multiple of 5, as 10 can be divided by 5, 2, and 5, making it a multiple of 5. The smallest positive integer that can be divided by both 5 and 2 is 10, making it the lowest common multiple of these numbers.
Least Common Multiple (LCM) between 10 and 8 is = 40
Buns is = 10-20-30-40
Hot dogs is = 8-16-24-32-40
So, stock would be equal for both products.
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Mrs. Cline is teaching a 5th grade class. She is standing 12 feet in front of Mandy. Ernesto is sitting to Mandy's right. If Ernesto and Mrs. Cline are 13 feet apart, how far apart are Mandy and Ernesto?
13
Step-by-step explanation:
taaaahthyyyyyfffffdddddddddddddddddddddddddddddd
5. Which of the inequalities describes the graph below?
Option D is the answer.
There are multiple ways to go about this problem, but I'll go over the simplest approach.
From the graph, the line contains the points (0,4), (1,3), (2,2), etc. Calculating for the slope using any of these two points (using rise/run) reveals that the line has a slope of -1.
Out of all four options, option D is the only option that has a slope of -1 as seen by the slope-intercept form [tex]y=mx+b[/tex]. Solving for the inequality entirely provides the same result.
Let me know if you have any questions, thanks!
Work out the following sheet,please
Angle NOM = 59° because it is vertically opposite angle POQ
Angle STU = 96°
What is the Theorem of triangles?
The theorem of triangles refers to various mathematical statements or propositions that describe relationships between the sides and angles of a triangle. These theorems have various applications in fields such as mathematics, physics, engineering, and computer graphics.
In question 1; Angle NOM = 59° because it is vertically opposite angle POQ
In question 2; Angle UVT = Angle VUT = 42°
Angle UTV = 180 - 2(42)
= 96°
Then;
Angle STU = 96° (The exterior angle of the triangle is equal to the sum of two opposite interior angles).
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Suppose that the functions s and t are defined for all real numbers x as follows.
s(x)=x-1
t(x) = 2x²
Write the expressions for (s+t) (x) and (s x t) (x) and evaluate (s-t) (3).
The expressions defined for all real number are written as for
(s + t) (x) = 2x² + x - 1(s x t) (x) = 2x³ - 2x²(s - t) (3) = -4How to write the expressionsInformation made available in the question include
function s(x) = x - 1
function t(x) = 2x²
rewriting the expression for (s + t) (x)
= x - 1 + 2x²
= 2x² + x - 1
rewriting the expression for (s x t) (x)
= (x - 1) * 2x²
= 2x³ - 2x²
rewriting the expression for (s - t) (3)
= (x - 1) - 2x²
= -2x² + x - 1
substituting the value of x = 3
= -2(3)² + 3 - 1
= -6 + 3 - 1
= -4
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 UNDER 5 min!!!
PLS ANSWER QUICK CORRECTLY!!!! help ya girl ouu!
what is the period of the sinusoidal function? enter your answer in the box.
The period of the sinusoidal function is given as follows:
8 units.
How to obtain the period of the function?A periodic function is a function that has the behavior repeating in intervals over the domain of the domain.
Then the period of the function is defined as the shortest difference between two points in which the function has the same behavior.
Two consecutive points where the function has the same behavior (same numeric value, increase/decrease and concavity) are given as follows:
x = 4 and x = 12.
Hence the period is of:
12 - 4 = 8 units.
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A ternary digit is either 0, 1, or 2. How many sequences of seven ternary digits are possible containing a single 1 and a single 2?
The number of sequences of seven ternary digits containing a single 1 and a single 2 is given as follows:
42.
What is the arrangements formula?The number of possible arrangements of n elements is given by the factorial of n, that is:
[tex]A_n = n![/tex]
When elements repeat [tex]n_1, n_2, n_3, \cdots, n_n[/tex] times, the number of arrangements is given as follows:
[tex]A_{n}^{n_1, n_2, n_3, \cdots, n_n} = \frac{n!}{n_1!n_2!n_3! \cdots n_n!}[/tex]
In this problem, we have an arrangement of seven elements, in which:
The zero appears five times.The one appears once.The two appears once.Hence the number of sequences is given as follows:
N = 7!/(5! x 1! x 1!)
N = 7 x 6
N = 42.
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(x+6) divided by 3+5x divided by 3 Please help me answer this question. I am really having a really hard time.
The value of expression after divide is,
⇒ (3x + 18) / (3 + 5x)
What is Division method?Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
We have to given that;
⇒ (x + 6) divided by 3+5x divided by 3.
Now, We can write as;
⇒ (x + 6) ÷ (3 + 5x) ÷ 3
⇒ (x + 6) ÷ (3+ 5x) / 3
⇒ (x + 6) × 3 / (3 + 5x)
⇒ 3 (x + 6) / (3 + 5x)
⇒ (3x + 18) / (3 + 5x)
Thus, The value of expression after divide is,
⇒ (3x + 18) / (3 + 5x)
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Determine which of the triangles below are unique. Share your reasoning.
Triangle A: All angles measure 60 degrees
Triangle B: All sides have length 6 cm.
Triangle C: Two sides have length 6 cm, and the included angle measures 55 degrees
Triangle D: Base has a length of 6 cm, and the base angles are 50 degrees.
Step-by-step explanation:
Triangle A: Equilateral triangle, all angles are equal (60 degrees) and all sides are equal. Unique.
Triangle B: Isosceles triangle, two sides are equal (6 cm) and two angles are equal. Unique.
Triangle C: Not unique, as different triangles can have two sides of equal length and an included angle of 55 degrees.
Triangle D: Not unique, as different triangles can have a base of 6 cm and base angles of 50 degrees.
Answer:
Step-by-step explanation:
Triangle A and Triangle B
Step-by-step explanation:
I think this is the answer because Triangle A, has a unique that all sides have a measure of 60 degrees. And I also think that Triangle B is unique because It's an Equilateral triangle, which means that all sides have the same length.
So hence, I think the answer is A and B
Always keep more than 2 smiles! You have to share them with people who don't have one too, right??
Thanks!
:D
olve the following. Show all calculat n autumn, 120 leaves fell from a tree over a period of 4 hours. How many leaves fell in one hour at the same rate?
Answer:
30 leaves in one hour
Step-by-step explanation:
[tex]\frac{120}{4}=30[/tex]
Solve the system of equations. 2x + 4y = 12 3x + y = 3 (0, 3) (1, 0) (2, 2) (2, −3)
Solution is in the attachment!!
Answer: [tex]\Large\boxed{(0,\:3)}[/tex]
Step-by-step explanation:
Given the system of equations
[tex]1)2x+4y=12[/tex]
[tex]2)3x+y=3[/tex]
Multiply 4 on both sides of the 2) equation
[tex]3x\times (4)+y\times(4)=3\times(4)[/tex]
[tex]12x+4y=12[/tex]
Update the system of equations
[tex]1)2x+4y=12[/tex]
[tex]2)12x+4y=12[/tex]
Subtract the 1) equation from the 2) equation
[tex](12x+4y)-(2x+4y)=(12)-(12)[/tex]
Expand the parenthesis and simplify
[tex]12x+4y-2x-4y=12-12[/tex]
[tex](12x-2x)+(4y-4y)=0[/tex]
[tex]10x+0=0[/tex]
[tex]10x=0[/tex]
Divide 10 on both sides
[tex]10x/10=0/10[/tex]
[tex]x={0}[/tex]
Substitute the x value into one of the equations
[tex]3(0)+y=3[/tex]
[tex]0+y=3[/tex]
[tex]y=3[/tex]
A flagpole casts a shadow that is 16 feet long. At the same time, a person standing nearby who is 5 feet 6 inches tall casts a
shadow that is 44 inches long. How tall is the flagpole?
Answer:
32ft
Step-by-step explanation:
Let's convert both the height of the person and the length of their shadow to feet so we can make a comparison.
1 foot = 12 inches
So the person's height in feet is:
5 feet + 6 inches / 12 inches/foot = 5.5 feet
The rule applied here is the concept of similar triangles. If the shadow of the person and the shadow of the flagpole are in the same proportion to their respective heights, then the two triangles formed by their heights and shadows are similar triangles. This means that the ratio of their heights to their shadow lengths is constant.
So, we can set the ratio of the person's height to their shadow length equal to the ratio of the flagpole's height to its shadow length and solve for the flagpole's height. This is done using the formula:
(person's height) / (person's shadow length) = (flagpole's height) / (flagpole's shadow length)
This is known as the proportionality rule, which states that two similar figures have the same ratios of corresponding sides.
Now, we have:
5.5/44 inches = x/16 feet
Cross multiplying, we get:
5.5 * 16 = x * 44
Solving for x:
x = 5.5 * 16 / 44
x = 32 feet
Therefore, the height of the flagpole is 32 feet.
please help
You charged $1,000 on a credit card and it has an interest rate of
15% APR. If you make no payments on the card for one month, how much is your TOTAL BALANCE?
1. $150
2. $850
3. $1,015.50
4. $1,012.50
Answer: 4; $1,012.50
Explanation:
The formula to calculate the interest charged on a credit card balance is:
Interest = (Balance * APR) / 12
Where,
Balance = $1,000
APR = 15%
So,
Interest = ($1,000 * 15%) / 12 = $12.50
Therefore, after one month, the total balance on the credit card would be $1,000 + $12.50 = $1,012.50.
12.403 in expanded form
12.403 can be expanded in the following manner -
[tex]10 + 2 + \frac{4}{10} + \frac{0}{100} + \frac{3}{1000} \\ [/tex]
hope helpful! ;-;
Answer:
10 + 2 + 4/10 + 3/1000
Step-by-step explanation:
Hope it helps! =D
How is the sum expressed in sigma notation?
22 + 27 + 32 + 37 + 42 + 47
Enter your answer by filling in the boxes.
the sum from i is equal to 1 to blank of open paren close paren$$
The sum of the arithmetic sequence is S = 207 and the summation notation is S = ∑i=1 to 6 ( 5n + 17 )
What is Arithmetic Progression?An arithmetic progression is a sequence of numbers in which each term is derived from the preceding term by adding or subtracting a fixed number called the common difference "d"
The general form of an Arithmetic Progression is a, a + d, a + 2d, a + 3d and so on. Thus nth term of an AP series is Tn = a + (n - 1) d, where Tₙ = nth term and a = first term. Here d = common difference = Tₙ - Tₙ₋₁
Sum of first n terms of an AP: Sₙ = ( n/2 ) [ 2a + ( n- 1 ) d ]
Given data ,
Let the arithmetic sequence be represented as A
Now , the value of A is
A = 22 + 27 + 32 + 37 + 42 + 47
The number of terms n = 6
So , the value of i ranges from 1 to 6
Now , the summation is represented as ∑i=1 to 6 ( 5n + 17)
when n = 1
S₁ = 5 ( 1 ) + 17 = 22
when n = 2
S₂ = 22 + 5 ( 2 ) + 17
S₂ = 22 + 27
when n = 3
S₃ = 22 + 27 + 5 ( 3 ) + 17
S₃ = 22 + 27 + 32
Hence , the sum of the arithmetic sequence is S = 207
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Help, what is the answer?
Answer:
a) 8 b) x= 8
Step-by-step explanation:
the coordinate of x is 8 because its a straight line nad the equation is x =8
why are green plants called producers
?
Answer:
Green plants use sunlight and carbon dioxide from the atmosphere to produce carbohydrates by the process of photosynthesis. Since, plants produce food for themselves, they are known as producers.
Step-by-step explanation:
Create your own quadratic function ,f(x), and then evaluate the function at f(x-3). Find the domain of your function.
Answer:
f(x)= (x-3)^2
domain: set= {x| xER}
interval= (-infinity, Infinity)
Step-by-step explanation:
hope this helps
Lynne needs to borrow $5250 for cosmetic surgery. She obtains a loan from her grandmother for 24 months at a simple interest rate of 5.3%. What is the loans future value?
I need the formula explained as well
The future value of the loan is $5807.65.
What do you mean by Interest?It is expressed as a percentage of the amount borrowed and is paid over a specific period of time. The interest rate represents the cost of borrowing money and is one of the key factors in determining the overall cost of a loan. Interest is usually calculated on a yearly basis and can be compounded, meaning that the interest earned on a loan is added to the original principal and the interest rate is then applied to the new, higher amount. This process continues over time, leading to the growth of the original loan amount. The purpose of charging interest is to compensate the lender for the risk they are taking in lending the money and for the opportunity cost of not being able to invest the money elsewhere.
The future value of a loan is equal to the present value plus the interest earned over a specified time period. The formula to calculate the future value of a loan with simple interest is:
FV = PV (1 + rt)
where:
PV is the present value of the loan, which is $5250
r is the interest rate as a decimal, which is 5.3% ÷ 100 = 0.053
t is the time period in years, which is 24 months ÷ 12 months/year = 2 years
Substituting the values into the formula, we get:
FV = $5250 (1 + 0.053 * 2)
FV = $5250 (1.106)
FV = $5807.65
So, the future value of the loan is $5807.65. This is the amount Lynne will have to repay to her grandmother after 24 months, including the interest earned.
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Find the Error Interval of 28
The error interval for x is given as follows:
27.5 ≤ x < 28.5.
How to obtain the error interval for x?The number x was rounded to the nearest integer.
The rule to round a number to the nearest integer depends on the first decimal digit of the number, as follows:
If the first decimal digit is less than 5, than the integer number remains constant, ex 27.4 is rounded to 27.If the first decimal digit is greater than 5, than one is added to the integer number, ex 27.5 is rounded to 28.For both cases, the decimal digit is removed.
Then, considering the two bullet points above, the error interval for x is given as follows:
27.5 ≤ x < 28.5.
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A square of side length x just fits inside a circle. Find the exact circumference of
the circle in terms of x.
The table shows how much money Earl's grandmother gave him each birthday.
Age Birthday Money
5 15
8 24
10 30
18 ?
At this rate, how much money should Earl receive from his grandmother when he turns 18?
$38
$48
$54
$81
At this rate, Earl should receive $54 from his grandmother when he turns 18.
What is multiplication?Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.
Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.
Given:
The table shows how much money Earl's grandmother gave him each birthday.
Age Birthday Money
5 15
8 24
10 30
18 ?.
Here, we find the common ratio,
15/5 = 3,
24/8 = 3.
Hence, r = 3.
Now, the missing value,
= 18 x r
= 18 x 3
= 54.
Therefore, Earl will receive $54.
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How many sides does a polygon have if the sum of the interior angles is 900∘?
5 star and like
Answer:
7
Step-by-step explanation:
(n-2)180=900/180
n-2=5
n=5+2=7
n=7
Solve the inequality 1/4b−1/5b>3/10b−1/2 and write the solution in interval notation.
Answer: To solve the inequality 1/4b−1/5b > 3/10b−1/2, we need to simplify both sides:
1/4b - 1/5b > 3/10b - 1/2
5/20b > 7/20b
Then we isolate b by subtracting 7/20b from both sides:
-2/20b > -7/20
Finally, we divide both sides by -2/20 to get:
b < 35/2
The solution in interval notation is (-∞, 35/2).
Step-by-step explanation:
19. Write a sequence of transformations that maps quadrilateral ABCD onto quadrilateral
A"B"C"D"in the picture below.
Answer:
Down 2 and a flip with (-1,3)(1,0)(2,3)and(1,4)
Step-by-step explanation:
hope this works
Sequence of transformations that maps quadrilateral ABCD onto quadrilateral A"B"C"D".
Reflection of ABCD over Y-axis.Shift of factor 2 downwards.What is transformation?Transformations are changes done in the shapes on a coordinate plane by rotation, reflection or translation or dilation.
The translation is moving a function in a specific direction, rotation is spinning the function about a point, reflection is the mirror image of the function, and dilation is the scaling of a function.
Given,
Quadrilateral ABCD and A"B"C"D" in the graph.
Transformation of quadrilateral ABCD to A"B"C"D"
By the graph, Steps of transformation are as follows
Reflection of ABCD over Y-axis.Shift of factor 2 downwards.Hence,
Reflection of ABCD over Y-axis.
Shift of factor 2 downwards.
are the steps to transform ABCD to A"B"C"D".
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As part of their employee benefits , all workers at Middletown Electronics receive a pension that is calculated by multiplying the number of years worked times 1.56% of the average of their three highest years’ salary. Maureen has worked for Middletown for 30 years and is retiring. Her highest salaries are $107,000, $107,800, and $108,198. Calculate Maureen’s pension.
Maureen's pension would be $50,035.20.
What is Percentage?
To compute a percentage, divide the value by the entire amount and multiply the result by 100. A percentage is a quantity or ratio that is stated as a fraction of one hundred. The percent sign, "%," is frequently used to represent it.
First, we need to calculate the average of Maureen's three highest salaries:
Average = (107,000 + 107,800 + 108,198) / 3
Average = 322,998 / 3
Average = 107,666
Next, we need to calculate 1.56% of this average:
Percentage = 1.56% * 107,666
Percentage = 1,667.84
Finally, we multiply this percentage by the number of years worked to find the pension:
Pension = 30 * 1,667.84
Pension = 50,035.20
So, Maureen's pension would be $50,035.20.
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An economy car costs $95 per week. Extra days cost $24 per day until the rate exceeds the weekly rate, in which case
the weekly rate applies. Find the cost C of renting an economy car as a function of the number x of days used, where
7≤x≤ 14.
The cost C of renting an economy car as a function of the number x of days used, where 7≤x≤ 14 is C(x) = $24x (if x < 7) and C(x) = $95 + $24(x - 14) (if x > 14).
What do you mean by function?A function is a mathematical concept that associates each element of a set (called the domain) with exactly one element of another set (called the codomain). The function takes inputs from the domain and assigns to each input a unique output from the codomain.
Functions can be represented in various ways, including by a graph, an equation, or a table of ordered pairs. A function is often denoted by f(x), where x is an element of the domain and f(x) is the corresponding output, or value, in the codomain.
Functions are widely used in mathematics and science to model real-world situations and describe relationships between variables. They can be used to calculate values based on input, to make predictions, and to model complex systems.
Let's call the cost of renting an economy car for x days "C". If x is less than 7, the cost will be $24 per day. If x is between 7 and 14, the cost will be $95 per week. If x is greater than 14, the cost will be $95 per week plus any extra days over 14.
So, the function for the cost of renting an economy car as a function of the number of days used (x) is:
C(x) = $95 (if x >= 7 and x <= 14)
C(x) = $24x (if x < 7)
C(x) = $95 + $24(x - 14) (if x > 14)
Note: This assumes that the cost of the extra days is $24 per day.
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Explain the difference between ratios, rates, and unit rates.
The required difference between ratios, rates, and unit rates has been shown.
What is the Ratio?The ratio can be defined as the proportion of the fraction of one quantity towards others. e.g.- water in milk.
Here,
Ratios, rates, and unit rates are the fraction value of one with respect to the others. the basic difference between the ratios, rates, and unit rates is given as ratios are the fraction between either dependent or non-dependent values, while rates are changes of value with respect to other values. unit rate is a change of value per unit change in the respective value.
Thus, the required difference between ratios, rates, and unit rates has been shown.
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please help me determine whether y is a function of x and if the function is one-to-one
anwser this 1/10 + 11/35 = ?
Answer:
≈0.785714286
Answer:
207/500
Step-by-step explanation:
Hope it helps! =D