The probability that he gets four or fewer questions correct is 0.9984
Let p be probability of getting correct answer and q be probability of getting in correct answer.
Number of trails : n = 6
Number of Successes : x = 4
By using binominal distribution ,
P(x≤4) = 1 - P(x>4)
= 1 - [P(x = 5) + P(x = 6)]
= 1 - [ ⁶C₅ p⁵ q +⁶C₆ p⁶ ]
solving combination ,
= 1 - [ 6 × 4/(5⁶) + 1 /(5⁶) ]
= 1 - (24 + 1 / 625)
= 1 - 25 / 625
= 624/625 = 0.9984
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Kal practices lines for 28 minutes at his acting class. This is 70% of the entire acting class. How many minutes long is his acting class? use any strategy to solve.
Using percent method we can solve the problem. Kal's acting class is 40 minutes long in total.
In which he practices lines about 28 minutes.
let "x minutes" be the total timing of kal's acting class .
Percent is always running between 0 to 100 where 0 % means nothing and 100% total about which we are considering the percent.
so, here x mintues is equal 100% timing
we have given that, kal practice lines for 28 minutes at his acting class and in percent form his timing is equal to 70% .
That's 70% time of entire acting class = 28 min
but we have to find the 100% of entire acting class i.e x minutes
Now, 70% time of entire class = 28 minutes
1% time of entire acting class = 28/70 minutes
100% time of entire acting class i.e x = ( 28/70)100
= 40 minutes .
So, the entire kal's acting class runs for 40 minutes .
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how do i graph this?? it doesnt make any sense to me :(
Answer:
Basically you need to show on a graph the cost half of the Drinks and the Popcorn and then when everything is graphed and then the rest of the instructions are stated below:
A) Sketch the graph that represents the situation and label the intercepts. Use one axis to represent the number of bags of popcorn and the other axis to represent the number of drinks. (3 points - 1 for x-intercept, 1 for -intercept, 1
PLEASE GIVE BRAINLIEST THANK YOU!!!
james can go 144 miles with 12 gallons of gas in his truck.how far can he go on 17 gallons?
Answer:
425 Miles
Explaination:
Please give the brainliest.
Write a linear equation that models the data in the table
X Y
-6 0
-3 2
0 4
3 6
Equation:?
to get the equation of any straight line, we simply need two points off of it, let's use the ones in red provided in the table in the picture below
[tex](\stackrel{x_1}{-3}~,~\stackrel{y_1}{2})\qquad (\stackrel{x_2}{3}~,~\stackrel{y_2}{6}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{6}-\stackrel{y1}{2}}}{\underset{run} {\underset{x_2}{3}-\underset{x_1}{(-3)}}} \implies \cfrac{4}{3 +3} \implies \cfrac{ 4 }{ 6 } \implies \cfrac{2 }{ 3 }[/tex]
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{2}=\stackrel{m}{ \cfrac{2 }{ 3 }}(x-\stackrel{x_1}{(-3)}) \implies y -2 = \cfrac{2 }{ 3 } ( x +3) \\\\\\ y-2=\cfrac{2 }{ 3 }x+2\implies {\Large \begin{array}{llll} y=\cfrac{2 }{ 3 }x+4 \end{array}}[/tex]
Sketch a number line plot your age as a point on your number line
What would you consider as the starting point on a number line? Why?
The starting point of the number line drawn using the age is zero
What is a Number line?A number line is an image of numbers plotted on a straight line, either horizontally or vertically. We can compare numbers and execute simple arithmetic operations on them easily by writing the numbers down on a number line. The starting point of a number line is often regarded as zero (0). The numbers on the left of zero are all negative, whereas the numbers on the right of zero are all positive.
The starting point of the number line drawn using the age is zero and it is why because every human life starts at the age of months/years.
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A rectangular box has a square base. The combined length of a side of the square base, and the height is 20 in. Let x be the length of a side of the base of the box.
a. Write a polynomial function in factored form modeling the volume V of the box.
b. What is the maximum possible volume of the box?
c. Explain how you found the maximum possible volume.
Answer:
Step-by-step explanation:
V(x) = x3 + 2x2 - 11x - 12
To factor, you want 3 numbers that multiply to give -12 (the constant term) and add to give 2 (coefficient of the x2 term). The answer is 4, -3, and 1: (4)(-3)(1) = -12, 4 + (-3) + 1 = 2. So the volume polynomial factors to:
V(x) = (x+4)(x-3)(x+1)
Now the volume of a rectangular box is:
V = Length*Width*Height = (x+4)(x-3)(x+1)
So let's pick height = (x+1) = 4.5 (you could pick any one of the three factors).
x+1 = 4.5
x = 3.5
Length = (x+4) = 3.5+4 = 7.5
Width = (x-3) = 3.5 - 3 = 0.5
The box's dimensions are 7.5 m by 0.5 m by 4.5 m
The screening process for detecting a rare disease is not perfect. Researchers have developed a blood test that is considered fairly reliable. It gives a positive reaction in 97% of the people who have a disease. However, it erroneously gives a positive reaction for 5% of the people who do not have the disease. Consider the null hypothesis "the individual does not have the disease". What is the probability of type i error if the new blood test is used?.
The probability of type I error if the new blood test is used is 0.05
Given data;
It is not always possible to identify rare diseases by screening. A blood test that has been created by researchers is thought to be reasonably dependable. In 97% of those who suffer from a sickness, it produces a favorable response. However, 5% of those tested who do not have the condition received an incorrectly positive response. Take into account the null hypothesis that "the person does not have the disease."
The probability that the blood test report will be positive if someone has the disease = 0.97 The probability that the blood test report will be positive if someone does not have the disease is = 0.05
The null hypothesis is: "The individual does not have the disease."
The type I error occurs when we reject the null hypothesis, but it was true in reality.
Therefore, the probability of type I error = The probability that the blood test report will be positive if someone does not have the disease.
⇒ 0.05
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∠A and angle ∠B are supplementary angles. If angle A=(5x-22) and m∠B=(x+28)
what are the mesaurements for ∠A?
The corresponding measurements for angles A and B are 123° and 57°
How to find the measurements of the angles?Supplementary angles are angles that sum up to 180 degrees e.g angle 140° and angle 40° are supplementary angles because the sum of 140° and 40° is equal to 180°
Given that: angle A= (5x-22) and m∠B= (x+28), and ∠A and angle ∠B are supplementary angles. Thus:
A + B = 180°
(5x-22) + (x+28) = 180°
5x-22 + x+28 = 180°
6x + 6 = 180
6x = 180 -6
6x = 174
x = 174/6 = 29°
∠A = (5x-22) put x = 29°
∠A = 5(29) -22
= 145-22
= 123°
∠B = 180 -123 = 57°
Therefore, the measurements for angles A and B are 123° and 57° respectively
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Answer:The corresponding measurements for angles A and B are 123° and 57°
The corresponding measurements for angles A and B are 123° and 57°
How to find the measurements of the angles?
Supplementary angles are angles that sum up to 180 degrees e.g angle 140° and angle 40° are supplementary angles because the sum of 140° and 40° is equal to 180°
Given that: angle A= (5x-22) and m∠B= (x+28), and ∠A and angle ∠B are supplementary angles. Thus:
A + B = 180°
(5x-22) + (x+28) = 180°
5x-22 + x+28 = 180°
6x + 6 = 180
6x = 180 -6
6x = 174
x = 174/6 = 29°
∠A = (5x-22) put x = 29°
∠A = 5(29) -22
= 145-22
= 123°
∠B = 180 -123 = 57°
Therefore, the measurements for angles A and B are 123° and 57° respectively
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You solve a system of equations in which x represents the number of adult memberships sold and y represents the number of student memberships sold. Can ( 6, 24) be the solution of the system? Explain your reasoning.
Answer:
picture please
Step-by-step explanation:
pic please
a ____________ is a table in which frequencies correspond to two variables.
A contingency table is a table in which frequencies correspond to two variables.
Explanation:
In contingency table one variable is used to categorise rows and second variable is used to categories columns.In contingency table have at least two rows and at least two columns.What is frequency table?
A frequency table is just a two-column "t-chart" or table that lists all of the potential outcomes and their corresponding frequencies as seen in a sample.What does "two way frequency table" mean?
A two-way or contingency table is the name for this kind of table. A statistical table called a two-way or contingency table displays the observed number or frequency for two variables, with the rows denoting one category and the columns denoting the other. Example, the gender (male or female) row category.To know more about contingency table check the below link:
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Write the equation of the parabola that has vertex (-5,6) and directrix y=2.
The equation of parabola is ( x + 5 )² = 16 ( y - 6 )
What is a Parabola?
A Parabola, open curve, a conic section produced by the intersection of a right circular cone and a plane parallel to an element of the cone. A parabola is a plane curve generated by a point moving so that its distance from a fixed point is equal to its distance from a fixed line
The equation of the parabola is given by
( x - h )² = 4p ( y - k )
where ( h , k ) is the vertex and ( h , k + p ) is the focus
y is the directrix and y = k - p
Given data ,
The vertex of the parabola is ( -5 , 6 )
The directrix of the parabola y = 2
From the equations of parabola , we know that
The vertex ( h , k ) = ( -5 , 6 )
h = -5
k = 6
y = k - p
y = 2
k - p = 2
Substituting the value k in the equation , we get
6 - p = 2
On Simplifying , we get
p = 4
So , now we have the values of h , k , and p
The equation of the parabola is
( x - h )² = 4p ( y - k )
Substituting the values , we get
( x - (-5) )² = 4 x 4 ( y - 6 )
( x + 5 )² = 16 ( y - 6 )
x² + 25 + 10x = 16y - 96
x² + 10x - 16y = -121
Hence , the equation of parabola is ( x + 5 )² = 16 ( y - 6 )
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Please help this is hard
The equation that represents each of the figure in slope intercept form are
equation of the left side - y = 3x + 2
equation of the right side - y = 3x - 4
equation of the top side - y = 5
equation of the bottom side - y = -1
How to write the linear equation in slope intercept formThe the slope intercept form has the formula
y = mx + c
where
m = slope
c = intercept
x = input variables
y = output variables
The left and right side's slopes require calculation however the top and bottom slope is zero
equation of the left side
The points used for the slope is gotten from the graph as (1. 5) (0, 2)
m = (y₂ - y₁) / (x₂ - x₁)
substituting the values
= (2- 5) / (0 - 1)
= -3 / -1
= 3
writing the equation using points (0, 2)
(y - y₂) = m(x - x₂)
y - 2 = 3(x - 0)
y = 3x + 2
equation of the right side
The points used for the slope is gotten from the graph as (5. 5) (3, -1)
m = (y₂ - y₁) / (x₂ - x₁)
substituting the values
= (-1 - 5) / (3 - 5)
= -6 / -2
= 3
writing the equation using points (3, -1)
(y - y₂) = m(x - x₂)
y - -1 = 3(x - 3)
y + 1 = 3x - 3
y = 3x - 4
equation of the top side
the top side is a horizontal line and the equation is written by picking the point where the line cut the y axis. from the graph the point is 5 hence
y = 5
equation of the bottom side
the bottom side is a horizontal line and the equation is written by picking the point where the line cut the y axis. from the graph the point is -1 hence
y = -1
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[tex]x\sqrt{2} +3=-2[/tex]
Value of x for the given expression x√2 + 3 = -2 is equal to (- 5√2)/2.
As given in the question,
Given expression is equal to :
x√2 + 3 = -2
Simplify the given expression x√2 + 3 = -2 to get the value of x we have,
x√2 + 3 = -2
Subtract 3 from both the side of the given expression we get,
x√2 + 3 - 3 = -2 - 3
⇒ x√2 + 0 = -5
Divide by √2 from both the side of the expression,
x√2/√2= -5/√2
⇒x = -5/√2
Multiply and divide by √2 on right-hand side we get
⇒ x = -5√2/ (√2×√2)
⇒ x= -5√2/2
Therefore, value of x for the given expression x√2 + 3 = -2 is equal to
(- 5√2)/2.
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Four siblings have a dog walking business. The table shows the hours worked by each sibling. Each sibling earns $25.50 per hour and the total number of hours worked is represented by 10h+15 , where h represents the number of hours Michael worked.
The total amount of money the siblings earned is equal to $1504.5.
How to determine the total amount the siblings earned?From the information provided, the total number of hours worked is represented by this mathematical expression:
10h + 15
where:
h represents the number of hours Michael worked.
Next, we would determine the number of hours Michael worked by summing up all of the total number of hours worked by each of the four siblings and equating it to the total number of hours worked:
2.5(h + 3) + 4(h - 2) + 31 + h = 10h + 15
7.5h + 26 = 10h + 15
10h - 7.5h = 26 - 15
2.5h = 11
h = 4.4 hours.
For the total number of hours worked by each of the four siblings, we have:
Total hours = 10h + 15
Total hours = 10(4.4) + 15
Total hours = 44 + 15
Total hours = 59 hours.
At a rate of $25.50 per hour, the total amount the siblings earned is given by:
Total earnings = $25.50 × 59
Total earnings = $1504.5.
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Complete Question:
Four siblings have a dog walking business. The table shows the hours worked by each sibling. Each sibling earns $25.50 per hour and the total number of hours worked is represented by 10h + 15 , where h represents the number of hours Michael worked. What was the total amount the siblings earned?
help needed asap!!!
find the equation of the line in point-slope form with the given slope passing through the given point
Option (a) is correct, i.e., the equation of the line in point-slope form with given slope -2/3 passing through the given point (2,-3) is y+3 = -2/3 (x-2).
What is point-slope form equation of a line?
Point slope form is used to represent a straight line using its slope and a point on the line.
The equation of a line in point-slope form whose slope is 'm' and which passes through a point (x₁ ,y₁) is
y - y₁ = m (x-x₁).
Here we have slope m= -2/3 and the point (x₁ ,y₁) = (2,-3).
Therefore, the point-slope form of the equation is
y- (-3) = - 2/3 (x-2)
⇒ y + 3= -2/3 (x-2).
⇒ Option(a) is correct.
Therefore, equation of the line in point- form slope is y+3 = -2/3 (x-2).
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The set of data in the table below represents a linear function.
X
Y
2
-15
5
-9
7
-5
10
1
13
7
Which is an equation for this function?
Answer:
y = 2x - 19
Step-by-step explanation:
Graph the points on the table and you'll be able to see the answer. That's how I went about it.
or use m = y^2 - y^1 divided by x^2 - x^1 to find the slope, then solve for the initial value from there
Hailey is making floral centerpieces for a wedding. Each centerpiece has 17 flowers. She has 430 flowers for the project. She estimates that she can make between 20 and 30 complete centerpieces. Is her estimate reasonable?
Use your knowledge of place value and division to explain the reasonableness of her answer.
What is the range of the data in how many teams complete the escape room this week
Please add an image or some more data.
15 POINTS PLEASE HELP
The data in the table describes the preferred type of exercise of 9th graders.
Cycling Running Swimming Row Totals
Boy 12% 18% 16%
Girl. 14%. 21%. 19%
Column Totals blank blank 100%
Find the marginal relative frequency for students who prefer cycling as their preferred type of exercise.
12%
14%
26%
39%
Answer: its (C) 26%
Step-by-step explanation:
its easy you just have to do addition
Marginal relative frequency are the column totals and row totals without the 100% there, so basically all the blank spaces are marginal relative frequencies
And to calculate the marginal relative frequency for students who prefer cycling as their preferred type of exercise is 12% +14% = 26%
I also do flvs so believe me
Answer:
26, C
Step-by-step explanation:
I did the quiz
Nia knows that one apple bag and 6 kiwis cost $19.70.
She also knows that the same apple bag and 16 kiwis cost $43.7.
i.
What is the cost for each kiwi?
Answer:
each kiwi costs $2.40
Step-by-step explanation:
we set up our system of equations
x = bag of apples
y = kiwi
x + 16y = 43.7
x + 6y = 19.7
multiply any one of the equations by -1 to make x negative
-1(x+6y) = -1(19.7)
-x - 6y = -19.7
add the other equation and the new equation
-x - 6y = -19.7
x + 16y = 43.7
+ ____________
10y = 24
divide by 10 both sides
y = 2.4
we can also look for the cost of each bag of apples
plug in the y value to an original equation
x + 16(2.4) = 43.7
simplify
x + 38.4 = 43.7
subtract 38.4 from both sides
x = 5.3
The length of a rectangle i 7 inche le than twice the width, w, of the rectangle. Find the dimenion if the area i 30 quare meter
The dimensions of the rectangle are, length = 5 inch and width = 6 inch.
What is rectangle?
A rectangle in Euclidean plane geometry is a quadrilateral with four right angles. It can alternatively be explained in terms of an equiangular quadrilateral—a term that refers to a quadrilateral whose angles are all equal—or a parallelogram with a right angle. A square is an irregular shape with four equal sides.
Let, the length of a rectangle is 7 inches less than twice the width, w, of the rectangle.
Suppose,
width = w = x, then,
length = l = 2x - 7
Since the area of the rectangle is 30 square inches.
We know that.
Area of rectangle = length x width
30 = (2x - 7) x (x)
30 = 2x^2 - 7x
2x^2 - 7x - 30 = 0
2x^2 - 12x + 5x - 30 = 0
2x(x - 6) + 5(x - 6) = 0
(2x + 5)(x - 6) = 0
⇒ 2x + 5 = 0, x - 6 = 0
⇒ x = -5/2, x = 6
Since length is not negative.
Therefore, w = 6.
So, l = 2(6) - 7 = 12 - 7 = 5
Hence, the length is 5 inches and the width is 6 inches.
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After much tinkering, Jaylen's time machine finally works! For his first trip,
Jaylen will travel 25 years into the future. If his time machine uses 3
kilowatts of power to transport him 1 month into the future, how many
kilowatts of power will it use for his first trip?
Answer:
900kW
Step-by-step explanation:
3kW = 1 month
xkW = 25 years
First, change 25 years into months:
12 months = 1 year
Therefore,
25 years = 12 × 25
= 300 months
If
3kW = 1 month
x = 300 months
cross-multiply
Hence,
1 monthX = 300 months × 3kW
= 900kW months
Divide both sides by the coefficient of X
X = 900kW months / 1 month
= 900kW
Therefore, Jalen's first trip will take 900kW
Bookwork code: J62
Copy and complete the table of values for
52 +3.
0 1
#| 3² | 9 | ¹ | 2 | ³ | 4 | 5 | 6
3
The values of y when x=-1,0,1,2,3,4,5,6 are 9,3,-1,-3,-3,-1,3,9 respectively.
Given the function is,
y = x²-5x+3
Finding the values we get,
substituting the value x=-1 we get,
y = (-1)²-5(-1)+3 = 1+5+3 = 9
substituting the value x=0 we get,
y = 0²-5*0+3 = 3
substituting the value x=1 we get,
y = 1²-5*1+3 = 1-5+3 = -1
substituting the value x=2 we get,
y = 2²-5*2+3 = 4-10+3 = -3
substituting the value x=3 we get,
y = 3²-5*3+3 = 9-15+3 = -3
substituting the value x=4 we get,
y = 4²-5*4+3 = 16-20+3 = -1
substituting the value x=5 we get,
y = 5²-5*5+3 = 25-25+3 = 3
substituting the value of x=6 we get,
y = 6²-5*6+3 = 36-30+3 = 9
Hence the values of y when x=-1,0,1,2,3,4,5,6 are 9,3,-1,-3,-3,-1,3,9 respectively.
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One hundred people came to the company's Thanksgiving dinner. There were fifty-two more vegetarians at the dinner than non-vegetarians. How many vegetarians were at the dinner?
Answer:
52????? It's in the question.
Step-by-step explanation:
Question 3(Multiple Choice Worth 2 points)
(01.07 LC)
Simplify the given expression below:
(3+4i)+(5-2i)
0-2+6i
02-2i
07+3i
08+2i
solve the following quadratic equation 4x^2-31x-33=12
I need help solving this problem!
The value of a is = 4/3.
From the given figure:
((3/4)a+4)3 = 15
(3a+4*4 / 4)3 = 15
(3a + 16 / 4)3 = 15
3a*3 + 16*3 = 15*4
9a + 48 = 60
9a = 60 - 48
9a = 12
divide by 9 on both sides
9a/9 = 12/9
a = 12/9
= 4/3.
Therefore the value of a is = 4/3.
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I need help with please!!!!
Answer: -5/2
Step-by-step explanation:
Using slope formula which is [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] you can substitute in the numbers which leads you to getting [tex]\frac{-1-4}{-3-(-5)}[/tex] which equals to -5/2
solve for the volume of the cylinders and sphere.
The volume of the cylinder with radius(r) 7 inches and height(h) 9 inches
is 1384.74 cubic inches.
What is a cylindrical shape?A cylinder is a three-dimensional solid object with two bases that are identically circular and are connected by a curving surface that is located at a specific height from the center.
Examples of cylinders are toilet paper rolls and cold beverage cans.
The volume of a cylinder is πr²h.
Curved surface area = 2πrh.
Total surface area = 2πr(h + r).
Given, a cylindrical shape of radius(r) 7 inches and height(h) 9 inches.
We know the volume of a cylinder is πr²h.
∴ The volume of this cylinder is
= π×(7)²×9 cubic inches.
= 441π cubic inches.
= 1384.74 cubic inches.
For the volume of a sphere, it is (4/3)πr³.
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help me please.......................
the answer is (A) according to the cosine rule a^2=b^2+c^2-2(b)(c)cos(A)