Answer
a. 14 ft²
b. length = 7 ft, width = 2 ft
c.
Step-by-step explanation
a. The dresser has a shape of a rectangular prism. Then, the volume of the dresser is calculated as follows:
\(V=\text{ Area of the base}\cdot\text{ height}\)Substituting with V = 42 cubic ft, and height = 3 ft, and solving for the area of the base:
\(\begin{gathered} 42=\text{ Area of the base }\cdot3 \\ \frac{42}{3}=\text{ Area of the base} \\ 14\text{ ft}^2\text{ = Area of the base} \end{gathered}\)b. The base of the dresser is a rectangle. Then, the area of the base is calculated as follows:
\(A=\text{ length}\cdot\text{ width}\)Assuming the length is 7 ft, and substituting A = 14 sq ft, the width must be:
\(\begin{gathered} 14=7\cdot\text{ width} \\ \frac{14}{7}=\text{ width} \\ 2\text{ ft = width} \end{gathered}\)In an ESP experiment subjects must predict whether a number randomly generated by a computer will be odd or even. (Round your answer to four decimal places.) (b) What is the probability that a subject would guess more than 20 correct in a series of 36 trials?
The probability that a subject would guess more than 20 correct in a series of 36 trials is 0.0001
How to find the pobability that a subject would guess more than 20 correct in a series of 36 trialsIn a series of 36 trials, if the subject is guessing randomly, then the probability of correctly guessing odd or even is 1/2.
Let X be the number of correct guesses in a series of 36 trials. X follows a binomial distribution with parameters n = 36 and p = 1/2.
The probability of guessing more than 20 correct is:
P(X > 20) = 1 - P(X ≤ 20)
Using a binomial distribution table, we can find that P(X ≤ 20) = 0.9999 (rounded to four decimal places).
Therefore: P(X > 20) = 1 - 0.9999 = 0.0001
So the probability that a subject would guess more than 20 correct in a series of 36 trials is 0.0001 (rounded to four decimal places).
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Let event A be defined as a randomly selected vehicle being silver or black. Let event B be defined as a randomly selected vehicle being a car or a truck. Find P(NOT B | A).
Answer:
i think its c in my opionion not sure tho
Answer:
D. 13/36
Step-by-step explanation:
Which factor of 24 can help you solve 24 divided by 4?
Answer:
im an expert
Step-by-step explanation:
An African elephant has a mass of
8139
kg
8139 kg8139, start text, space, k, g, end text.
Choose the best approximation of the mass of an African elephant.
Choose 1 answer:
Choose 1 answer:
(Choice A)
8
⋅
1
0
3
kg
8⋅10
3
kg8, dot, 10, cubed, start text, space, k, g, end text
A
8
⋅
1
0
3
kg
8⋅10
3
kg8, dot, 10, cubed, start text, space, k, g, end text
(Choice B)
8
⋅
1
0
4
kg
8⋅10
4
kg8, dot, 10, start superscript, 4, end superscript, start text, space, k, g, end text
B
8
⋅
1
0
4
kg
8⋅10
4
kg
Best approximation of the mass of an African elephant is 8 ×10³kg
Define massIn physics, mass is a fundamental property of matter that measures the amount of substance in an object. It is a scalar quantity that describes an object's resistance to acceleration when a force is applied. Mass is usually measured in kilograms (kg) and can be calculated by dividing an object's weight by the acceleration due to gravity.
Given;
Mass of elephant=8139kg
Dividing the mass by 1000 and multiplying it by 10³, we get
Mass of elephant=8.139 ×10³kg
Estimating the mass of elephant, we get
Mass of elephant=8 ×10³kg
hence, best approximation of the mass of an African elephant is 8 ×10³kg.
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From the tower of 32meter of heights,a car is observed at angle of the depression of 55 degrees. Find how far the a car from the tower
the car is approximately 22.4 meters away from the tower.
What is Trigonometric Functions?
Trigonometry uses six fundamental trigonometric operations. Trigonometric ratios describe these operations. The sine function, cosine function, secant function, co-secant function, tangent function, and co-tangent function are the six fundamental trigonometric functions. The ratio of sides of a right-angled triangle is the basis for trigonometric functions and identities. Using trigonometric formulas, the sine, cosine, tangent, secant, and cotangent values are calculated for the perpendicular side, hypotenuse, and base of a right triangle.
we can write:
tan(55 degrees) = 32 / d
To solve for "d", we can rearrange the equation:
d = 32 / tan(55 degrees)
Using a calculator, we can evaluate the tangent of 55 degrees:
tan(55 degrees) = 1.428
d = 22.4 meters
Therefore, the car is approximately 22.4 meters away from the tower.
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John wishes to choose a combination of two types of cereals for breakfast - Cereal A and Cereal B. A small box (one serving) of Cereal A costs $0.50 and contains 10 units of vitamins, 5 units of minerals, and 15 calories. A small box (one serving) of Cereal B costs $0.40 and contains 5 units of vitamins, 10 units of minerals, and 15 calories. John wants to buy enough boxes to have at least 500 units of vitamins, 600 units of minerals, and 1200 calories. How many boxes of each cereal should he buy to minimize his cost?
Let's assume that John buys x boxes of Cereal A and y boxes of Cereal B. Then, we can write the following system of inequalities based on the nutrient and calorie requirements:
10x + 5y ≥ 500 (minimum 500 units of vitamins)
5x + 10y ≥ 600 (minimum 600 units of minerals)
15x + 15y ≥ 1200 (minimum 1200 calories)
We want to minimize the cost, which is given by:
0.5x + 0.4y
This is a linear programming problem, which we can solve using a graphical method. First, we can rewrite the inequalities as equations:
10x + 5y = 500
5x + 10y = 600
15x + 15y = 1200
Then, we can plot these lines on a graph and shade the feasible region (i.e., the region that satisfies all three inequalities). The feasible region is the area below the lines and to the right of the y-axis.
Next, we can calculate the value of the cost function at each corner point of the feasible region:
Corner point A: (20, 40) -> Cost = 20
Corner point B: (40, 25) -> Cost = 25
Corner point C: (60, 0) -> Cost = 30
Therefore, the minimum cost is $20, which occurs when John buys 20 boxes of Cereal A and 40 boxes of Cereal B.
Evaluate the factorial expression
32!/28!
Answer:863040
Step-by-step explanation:
Rewrite 32! as 32 x 31 x 30 x 29 x 28!
then cancel common factor of 28!
multiply 32 x 31 x 30 x 29
863040
You deposit $5000 in an account earning 5% interest compounded continuously. How much will you have in the account in 5 years? Round to the nearest cent.
The length of a rectangle is 5 cm more than its width. If the perimeter is 58cm, calculate:
(a) Write an equation to show the perimeter of the rectangle ?
(b) calculate:
I.width
II.length
III. the area of the rectangle
(a) 58 = 2(w + 5 + w)
(b) I. The width of the rectangle is 12 cm.
II. The length of the rectangle is 17 cm.
III. The area of the rectangle is 204 cm².
Let's solve the problem step by step:
(a) To write an equation for the perimeter of the rectangle, we know that the perimeter is the sum of all four sides. Let's denote the width of the rectangle as "w" (in cm). Given that the length is 5 cm more than the width, the length would be "w + 5" (in cm). The formula for the perimeter is:
Perimeter = 2(length + width)
Substituting the values, we have:
58 = 2(w + 5 + w)
Simplifying the equation, we get:
58 = 2(2w + 5)
(b) Now let's solve for the width and length of the rectangle:
I. To find the width, we solve the equation:
58 = 2(2w + 5)
Dividing both sides by 2, we get:
29 = 2w + 5
Subtracting 5 from both sides, we have:
24 = 2w
Dividing both sides by 2, we find:
w = 12 cm
Therefore, the width of the rectangle is 12 cm.
II. To find the length, we substitute the value of the width into the equation:
Length = w + 5 = 12 + 5 = 17 cm
Therefore, the length of the rectangle is 17 cm.
III. The area of the rectangle can be calculated using the formula:
Area = length × width
Substituting the values, we have:
Area = 17 cm × 12 cm = 204 cm²
Therefore, the area of the rectangle is 204 cm².
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The equations of 4 lines are given. Identify which lines are parallel
We are given the equations of four lines and we are asked to determine which ones are parallel. To do that we need to remember that two lines are parallel if they have the same slope. To determine the slope the line equations must be written in the form:
\(y=mx+b\)Where "m" is the slope.
The first equation is:
\(y=-\frac{3}{4}x-6\)Therefore, the slope of the first equation is:
\(m_1=-\frac{3}{4}\)The second equation is:
\(y-7=-4(x+9)\)We need to rewrite the equation to the wished form in order to know the slope, therefore we need to solve for "y". We do that first by applying the distributive property on the right sides:
\(y-7=-4x-36\)Now we add 7 to both sides:
\(\begin{gathered} y=-4x-36+7 \\ y=-4x-29 \end{gathered}\)Therefore, the slope of this line is:
\(m_2=-4\)For the third equation we have:
\(y=-2x+6\)The slope of this equation is:
\(m_3=-2\)For the fourth equation we have:
\(x+\frac{4}{3}y=-5\)Now we solve for "y", first we subtract "x" from both sides:
\(\frac{4}{3}y=-5-x\)Now we multiply both sides by "3/4":
\(y=-\frac{15}{4}-\frac{3}{4}x\)Therefore, the slope of the fourth line is:
\(m_4=-\frac{3}{4}\)Since we have:
\(m_1=m_4\)Then lines 1 and 4 are parallel.
Find the Greatest Common Factor of the Numerator and Denominator
10/70
Answer:
GCF (10,70) = 10
Help
Identify the equation that represents a quadratic relationship
y =4x^2
y =4x^4
y =4x^3
y =4
The equation that represents a quadratic relationship is y = 4x^2. Option A.
A quadratic relationship is a mathematical relationship where the variable y is a function of the variable x raised to the power of 2. In other words, it is an equation in which the highest power of the variable is 2.
Let's analyze the given equations:
1. y = 4x^2: This equation represents a quadratic relationship because the variable x is raised to the power of 2. The term 4x^2 indicates that the relationship between x and y is quadratic.
2. y = 4x^4: This equation represents a quartic relationship, not a quadratic relationship. The variable x is raised to the power of 4, which indicates a higher degree relationship than quadratic.
3. y = 4x^3: This equation represents a cubic relationship, not a quadratic relationship. The variable x is raised to the power of 3, indicating a higher degree relationship.
4. y = 4: This equation represents a linear relationship, not a quadratic relationship. It is a constant equation where y is always equal to 4, regardless of the value of x. In a quadratic relationship, the variable x should have a power of 2. Option A.
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What is the value of x?
Answer:
8
Step-by-step explanation:
You have to set up a proportion for this!
Because ABC and PAQ are similar triangles (same angles and PQ || BC), you can assume that all the equivalent sides are proportional!
If you solve the proportion for x:
\(\frac{x}{40} =\frac{7}{35}\)
x = 8
Line f has a slope of -3/4 line g is perpendicular to f. What is the slope of like g
Answer:
Slope of line g = \(1\frac{1}{3}\)
Step-by-step explanation:
Line f has a slope of \(-\frac{3}{4}\) Line g is perpendicular to f* Mathematics rule: If two lines are perpendicular to each other, then the product of their slopes is equal to -1 .
∴ \(-\frac{3}{4}\) × slope of line g = -1
Slope of line g = -1 ÷ \(-\frac{3}{4}\) = 4/3 = \(1\frac{1}{3}\)
help please 50 points Tia and Marcus are having a debate about the graph below. Tia says that this is an x^5 function while Marcus claims that it is an x^4 function. Find the fully factored form of this equation and determine who is correct in the debate. You can use the end behavior chart to help you explain your reasoning.
Answer:
\(f(x) = \dfrac14(x + 1)^2(x + 3)(x -2)( x - 3)\)
Tia is correct
Step-by-step explanation:
From inspection of the graph, we can say that the leading coefficient of the function is positive as:
\(f(x) \rightarrow - \infty, \textsf { as } \ x \rightarrow - \infty\\f(x) \rightarrow +\infty, \textsf { as } \ x \rightarrow + \infty\)
From inspection of the graph, we can see that the curve intercepts the x-axis at x = -3, x = 2, x = 3
As the curve touches the x-axis at (-1, 0) then this means that the root x = -1 has multiplicity 2
Therefore, \(f(x) = a(x + 1)^2(x + 3)(x -2)( x - 3)\) where \(a\) is some positive constant.
If we multiply the constants, we can determine the y-intercept:
y-intercept = a x 1² x 3 x -2 x -3 = 18a
Therefore, the y-intercept is at y = 18a
From inspection of the graph, the y-intercept is at y = 4.5
So to determine the value of a: 18a = 4.5 ⇒ a = 1/4
Therefore, the fully factored form of the equation is:
\(f(x) = \dfrac14(x + 1)^2(x + 3)(x -2)( x - 3)\)
Set up an equation for x and solve to the nearest degree
Answer:
Almost equals 28°
Step-by-step explanation:
cos(x)= 12/18
x= cos^-1 (12/18)
So it equals 48.1896°
PLEASE HELP WILL MARK AS BRAINLEST
Question: Use the equation
y = 5 + 1/2x to complete the table. Use the table to list some of the ordered pairs that satisfy the equation.
Alex was trying to guess the month of her brother's birthday? She knew that the
month started with the letter 'J'. What is the probability that Alex guesses the
correct month?
Answer:
16.67
Step-by-step explanation:
2/12
Answer:
33.3%
Step-by-step explanation:
out of all 12 months, there are 3 months with J, January, June, July
100/3=33%
Name this triangle by its sides and angles. This is a(n) ____________________ triangle.
A.obtuse, isosceles
B.right, scalene
C.obtuse, scalene
D.right, isosceles
Answer:
right scalene
Step-by-step explanation:
Since all three sides have different lengths , this is a scalene triangle
(isosceles means two sides have the same lengths and equilateral means all three sides have the same length)
We have a right angle indicated by the box in the corner
This week Sheniqua got a promotion at work that came with a 1 % pay increase. If now her monthly salary is $ 2575.5 , how much was she making before the raise?
please help. will give brainliest
Answer:
B. The probability that the student received a grade better than C is 0.45Step-by-step explanation:
Total number of students:
15 + 30 + 35 + 16 + 4 = 100StatementsA.
p(<D) = 4/100 = 0.040.04 ≠ 0.2IncorrectB.
p(>C) = (30 + 15)/100 = 45/100 = 0.450.45 = 0.45CorrectC.
p(not A or B) = (100 - 15 - 30)/100 = 55/100 = 0.550.55 ≠ 0.45IncorrectD.
p(B or C) = (30 + 35)/100 = 65/100 = 0.650.65 ≠ 0.35Incorrect7.25y-15=21.25 what is y
Answer:
5
Step-by-step explanation:
7.25y = 36.25. (after adding 15 on both sides)
Then divide by 7.25 and it should come out to 5. Hope this helps! :D
The perimeter of a triangle is 32 feet. One side of the triangle is 3 times the second side. The third side is 12 feet longer
than the second side. Find the length of each side.
We have a triangle whose perimeter is 32 feet. Some information regarding the sides of the triangle is given:
GiveN:
One side is 3 times the second side.Third side is 12 feet longer than the second side.As we can see that, two sides of the triangle are defined the second sides. It means First and third side can be expressed in the form of second side.
So let the second side be xThen,
First side = 3xAnd, third side = x + 12We know that, perimeters is the sum of the lengths of all sides of the triangle, So it can be written as:
\(3x + x + x + 12 = 32\)
Solving it further,
\(5x + 12 = 32\)
Subtracting 12 from both sides,
\(5x + 12 - 12 = 32 - 12\)
\(5x = 20\)
Dividing 5 from both sides,
\( \frac{5x}{5} = \frac{20}{5} \)
\(x = 4\)
Then,
First side = 3x = 12 feetSecond side = 4 feetThird side = x + 12 = 16 feetAnd we are done with the answer !!
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A plant is given plant food that contains 54 milligrams of magnesium. The plant is given this food each week for 20 weeks. How many grams of magnesium does the plant receive in 20 weeks?
The plant receives a total of 1.08 grams of magnesium in 20 weeks.It's important to note that when performing unit conversions, it's crucial to keep track of the units and ensure that they cancel out correctly. In this case, we converted milligrams to grams and then multiplied by the number of weeks to find the total amount of magnesium in grams.
To calculate the total amount of magnesium the plant receives in 20 weeks, we need to convert the milligrams to grams and then multiply it by the number of weeks.
Given that the plant food contains 54 milligrams of magnesium, we need to convert it to grams. Since there are 1,000 milligrams in 1 gram, we divide 54 by 1,000 to convert milligrams to grams:
54 milligrams ÷ 1,000 = 0.054 grams
Now, we multiply the amount of magnesium received per week (0.054 grams) by the number of weeks (20) to find the total amount of magnesium received in 20 weeks:
0.054 grams/week × 20 weeks = 1.08 grams.
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compute the optimal rank- approximation of the symmetric matrix given that the columns of are eigenvectors of .
In linear algebra, a symmetric matrix is a square matrix whose transpose remains unchanged. This indicates that a symmetric matrix is one whose transpose is the same as the matrix itself.
A = 3.75 -1.25 0.25 L = 3.75 -1.75 0.25 -1.75 3.75 -1.25 -1.75 0.25 -1.25 3.75 Now, employing Eigen Vectors, compute the normalized values of V1 as follows: length of V1 = (1)2 + (1)2 + (122 + 422) = 2 Bame as 2 = 3 = 4 Bo the matrix fort= 1 V4 0.5 0.5 0.5 0.5 0.5 -0.5, 0.5, 0.5, 0.5 of the Eigen Values of the Given Matrix A 7,4,3,1 1 Now Rank-2-Approximation GV; & the Bingular Value Mean VT + 62: V2 V₂T
0.50 0.5 0.5 7 [o. 0.50 0.5 0.5 0.50.5 -0.5 +4 0.5-0.5-0.5]
7
50.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 10.25 0.25 0.250.25
0.25 0.25 0.25 0.25
144
16.25 0.25 -0.25 -0.25 0.25 0.25 -0.25 -0.25 10.25 -0.25 0.25 0.25 1-0.25 -0.25 0.25 0.25
= 1.75 1.75 1.75 1.75- 1.75 2.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75
1 1 -1 1 1 1 -1 1 -1 -1 1 -1 1 1 1 1 ++
2.75
-0.75 -0.75 2.75 2.75 -0.75 -0.75 2.75 2.75 2.75 -0.75 -0.75
2.75 2.75 -0.75 -0.75.
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The product of 50 and the number of employees which algebraic expression represents the phrase
Answer:
Let x be the number of employees
50x
Step-by-step explanation:
Tina is going on a 5 day trip. She has 1 blue shirt, 1 red shirt, 1 white shirt, 1 green shirt, and 1 grey shirt. What is the probability that Tina will wear blue on the first day of her trip and then wear grey on the second day of her trip?
Answer:
1/20
Step-by-step explanation:
1/5 chance she will wear the blue shirt on the first day and 1/4 chance she will wear a grey shirt on the second day.
1/5 X 1/4 = 1/20
Answer:
i got 1/20 as my answer
Tell what whole number you can substitute for z in the following list so the numbers are ordered from least to greatest.
1/x, x/3, 80%
The whole number that can be substituted for z is 1.
The whole number you can substitute for zTo order these numbers from least to greatest, we need to first find a value for x that makes the expressions comparable.
1/x can be rewritten as 0.01/x
80% can be written as 0.8
So, the list becomes:
0.01/x, x/3, 0.8
To compare 0.01/x and x/3, we can cross-multiply and simplify:
0.01/x < x/3
0.01*3 < x^2
0.03 < x^2
x > sqrt(0.03)
Since x has to be a whole number, the smallest possible value for x is 1.
So, substituting x = 1, the list becomes:
0.01, 1/3, 0.8
Ordering these from least to greatest, we get:
0.01, 0.8, 1/3
Therefore, the whole number that can be substituted for z is 1.
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In how many zeros does 75! end?
pleas find the area of the figure.
Answer:
41
Step-by-step explanation:
we can get this answer because:
3(3)=9
4(8)=32
and u add 32 and 9 together and get 41