Answered: Given the graph of a quadratic…

Given the graph of a quadratic function, determine the signs of a and c: А. а>0, с>0 В. а>0, с<0 С. а<0, с>0 D. a<0, c<0

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Having a hard time understanding the concepts in question 2. Anything helps! Thank you and I will upvote!!
An angler fishes half of their time at East Delaney Lake, one quarter of their time at South Delaney Lake, and one quarter of their time at North Delaney Lake. Each lake has only two types of trout, brown trout and cutthroat trout. In East Delaney Lake, 6% of the trout are brown trout. In South Delaney Lake 64% of the trout are brown trout. In North Delaney Lake 69% of the trout are brown trout. Assume that any individual trout fish has the same chance of being caught by an angler spending time at that lake. Given that the angler caught a brown trout, what is the conditional probability that they caught the trout on North Delaney Lake? Use three decimal place accuracy.
An economy produces quinoa (good 1), coconut oil (good 2) and sesame seed (good 3). The production of one unit of quinoa requires 0.2 unit of quinoa, 0.4 unit of coconut oil and 0 unit of sesame seed. The production of one unit of coconut oil requires 0 unit of quinoa, 0.4 unit of coconut oil and 0.5 unit of sesame seed. The production of one unit of sesame seed requires 0.8 units of quinoa, 0.1 unit of coconut oil and 0.5 unit of sesame seed. We want to find the production schedule that meets an external demand of 5 units of quinoa, 10 units of coconut oil and 20 units of sesame seed. This problem can be solved by reducing which augmented matrix?
The following regression model investigates the determinants of years of schooling. educ = Bo + B₁ * motheduc + B₂ fatheduc + ß* income +84 * ability + u where motheduc is mother's education, fatheduc is father's education, sibs is number of siblings, and ability is a person's ability. Write the reparameterized model and explain how you would use it to test the hypothesis that mother's education and father's education have the same effect on years of schooling.
A brewery produces regular beer and a lower-carbohydrate "'light" beer. Steady customers of the brewery buy 12 units of regular beer and 18 units of light beer monthly. While setting up the brewery to produce the beers, the management decides to produce extra beer, beyond that needed to satisfy customers. The cost per unit of regular beer is $32,000 and the cost per unit of light beer is $60,000. Every unit of regular beer brings in $100,000 in revenue, while every unit of light beer brings in $300,000 in revenue. The brewery needs at least $9,000,000 in revenue, and has determined that the total demand will be at least 50 units of beer. Complete parts (a) and (b). (a) How much of each type of beer should be made so as to minimize total production costs? ◻️units of regular beer and◻️ units of light beer should be made, for a minimum total cost of $◻️
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Economy has three industries A, B, and C. These industries have annual consumer sales of 40, 30, and 70 (in billions of dollars), respectively. For every dollar of goods, A Sellas, A requires 20 cents of goods from B and 10 cents of goods from C. For each dollar of goods B sells, B requires 25 cents of goods from A and 10 cents of goods from C. For each dollar of goods C sells, C requires 10 cents of goods from A and 15 cents of goods from B. Determine the total output required from each industry to meet both consumer and between industry demand. (a) Write a system of linear equations modeling the problem. (b) Use the augmented matrix to solve the problem. (c) Determine the total output required from each industry.
5. On Cybertron, we manufacture Autobots, produce energy and extract metals. • To manufacture a unit of Autobots, we need 0.9 units of energy and 0.8 units of metals. • To produce a unit of energy, we need 0.01 units of Autobots, 0.02 units of energy and 0.03 units of metals. • To manufacture a unit of metal, we need 0.02 units of Autobots, 0.2 units of energy and 0.02 units of metals. In a production cycle, we export 6,450 units of Autobots (sent to the Great War) but have to import 5270 units of energy and 3270 units of metals (both obtained from other planets). Determine the level of production of each sector. Submit here only the level of production of the Autobots.
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Goldfish care manuals recommend that you have only 12 goldfish per 10 gallons of water. If Alex owns a 40 gallon tank that has a population density of 1.75 goldfish/gallon, is Alex meeting the recommendations? There is no way to determine how many goldfish Alex actually has. Yes, Alex has fewer than 12 goldfish per 10 gallons. O Yes, Alex has exactly 12 goldfish per 10 gallons. O No, Alex has more than 12 goldfish per 10 gallons.
An economy is based on three sectors-agriculture, manufacturing, and services. For each unit of output, agriculture requires inputs of 0.30 unit from agriculture, 0.30 unit from manufacturing, and 0.30 unit from services. For each unit of output, manufacturing requires inputs of 0.30 unit from agriculture, 0.20 unit from manufacturing, and 0.20 unit from services. For each unit of output, services requires 0.20 unit from agriculture, 0.30 unit from manufacturing, and 0.30 unit from services. Determine the production levels needed to satisfy a final demand of 0 units for agriculture, 50 units for manufacturing, and 0 units for services. The production level needed from the agricultural sector is units. (Do not round until the final answer. Then round to two decimal places as needed.)
13. Please help me out. Please solve the linear algebra problem asap I got stuck on my homework.