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Identifica cuáles de los siguientes polinomios están bien definidos: a. P(x)=5 x^3+1 / 2 x^2-x, b. Q(x)=x+1, c. R(x)=3 x^(-2)-5 x+6, d. M(x)=7x, e. A(x)=2 x^3+x^(1 / 2)-3, f. I(x)=3 x^2-5 x+6, g. C(x)=-3mnx-6nm x^2, h. D(x)=x^5-1/4 x-1, i. G(x)=-3 x^(-2)+8 x^(-5)-4, j. F(x)=-6
Algebra
Mar 30, 2025
If 8 ft. boards of drywall cost $20 and 12 ft. boards cost $29, what is the minimum price for covering a 16 x 24 room with 12 ft. ceilings (entire room)?
Arithmetic
Jun 10, 2025
Describe the sampling distribution of p̂. Assume the size of the population is 15,000 . n=700, p=0.1. Choose the phrase that best describes the shape of the sampling distribution of p̂ below. A. Not normal because n <= 0.05 N and np(1-p) < 10. B. Approximately normal because n<=0.05N and np(1-p) < 10. C. Approximately normal because n<=0.05N and np(1-p) >= 10. D. Not normal because n <= 0.05N and np(1-p) < 10.
Statistics
Mar 29, 2025
Standard automobile license plates in a country display 1 numbers, followed by 3 letters, followed by 3
numbers. How many different standard plates are possible in this system? (Assume repetitions of letters
and numbers are allowed.)
Your answer is:
Pre Algebra
Mar 30, 2025
Distuncian entre 2 purtor, Determina lg distancia. 1- A(5, 5) B(0, 5), 2- A(4, 1) B(4, 8), 3- A(1, 1) B(4, 4)
Geometry
Mar 30, 2025
8. La dependencia de servicio al estudiante de la Corporación Universitar
Iberoamericana, si al requerir estimar el ingrese, promedio de sus estudiantes
nivel nacional seleccionó 62 estudiantes con una desviación estándar de 80000
pesos en su salario y un nivel de confianza del \( 99 \% \), determine el error usado par
haber realizado este calculo.
Statistics
Mar 23, 2025
La dependencia de servicio al estudiante đe la Corporación Universitaria
Iberoamericana, requiere estimar el ingreso promedio de sus estudiantes a nivel
nacional. Si se tiene conocimiento que a la fecha hay 17315 estudiantes inscritos y
se está dispuesto a acepta un error de más o menos 150000 pesos, con una
desviación estándar de 950000 pesos y un nivel de confianza del \( 95 \% \). Determine
el tamaño de la muestra que se debe seleccionar para calcular estimar dicho
parámetro.
Statistics
Mar 23, 2025
32) Rules of 70 and 72: The rules state that it takes about 70/i of 72/ i years for money to double at i percent, compounded continuously, using whichever of 70 or 72 is easier to divide by i. a) Show that it takes t=ln 2/r years for money to double if it is invested at annual interest rate r (in decimal form) compounded continuously. b) Graph the functions y_1=ln2 / r, y_2=70/100r, y_3=72/100r 0<=r<=0.1 and 0<=y<=100 viewing window. c) Explain why these two rules of thumb for mental computations are reasonable.
Calculus
Mar 24, 2025
Xavier mixes \( \frac{4}{5} \) bucketsof coarse sand with \( 1 \frac{1}{5} \) buckets of cement to make a
special type of concrete. How many buckets of concrete will he make?
Tasneem is an intern at ZX Communications Agency. She earns R4 500 a month
\( 1.2 .1 \quad \) Write the number 4500 in scientific notation.
\( 1.2 .2 \quad \) Increase R4500 in the ratio \( 5: 6 .(2 \times 2) \)
Arithmetic
Mar 23, 2025
Math Essentials and How UpStudy Enhances Your Learning
Who Invented Math?
Math was less invented than found. Its roots are in prehistoric societies including Greece, Babylonia, and Egypt where early mathematical ideas including geometry, arithmetic, and simple number systems first found expression. While building on past contributions by others who came before, Euclid and Pythagoras were crucial in establishing mathematical theory during this age; today Carl Friedrich Gauss and Terence Tao continue to greatly enhance modern math.
What Does 'Mean' Mean in Math?
In math, the 'mean' is a type of average. To calculate the mean, you add all the numbers in a set together and divide by the number of values. This gives you a single number that represents the central tendency of the data. For example, if five students have scores of 8, 9, 5, 6, and 7, you add them up (35) and divide by 5, which gives a mean of 7. It’s an essential tool in statistics and helps summarize a set of data with just one number.
What Does 'Product' Mean in Math?
In math, the 'product' refers to the result you get when two or more numbers (called factors) are multiplied together. For example, the product of 2 and 3 is 6, since 2 × 3 = 6. The product is an essential concept in many areas of math, including algebra and geometry. It’s useful in everyday life too, such as when calculating the total cost of multiple items or determining the area of a rectangle.
How Can UpStudy Math Homework Bank Help You?
UpStudy Math Homework Bank is an invaluable tool for students aiming to excel at their math homework. By offering step-by-step solutions, students can quickly learn how to solve problems, understand key concepts, and enhance their problem-solving abilities. With basic arithmetic to advanced calculus topics covered on this platform - whether you need help solving an equation or want a revision ahead of an upcoming test - UpStudy Math Homework Bank provides the resources you need for success!
