Mathematics, 22.04.2021 18:30 meganxc98
For problems 1—4 below, let = (3, and = (5, —2.—1) and let k = —4 (a scalar). 1. Determine whether the following are vectors, scalars. or undefined, If the value is defined, use the values above to evaluate, If the value is undefined, clearly explain why. 2. Verify that lla112 — 11b 112 3. Find the vector projection of é onto B, 4. Find the area Of the parallelogram formed by and Proof-type problems 5. Do the following: a. Prove that if two vectors are orthogonal, then their dot product is zero. b. Show that and (as defined in part l) are orthogonal c. Explain why it must be the case that kå and kb are orthogonal. 6. Complete one of the following: a. use the definition of dot product to prove that it • ii = b. Prove that i X F c. (Extra Points for this one) Suppose that Iliill = 2 and llvll = 5 and llü X 1311 = 6. Find ä•ö. solution
Answers: 2
Mathematics, 21.06.2019 13:00
Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?
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Mathematics, 21.06.2019 13:30
Tom is making a punch that contains 80% cranberry juice and the rest ginger ale. the punch has 2 liters of ginger ale. part a: write an equation using one variable that can be used to find the total number of liters of cranberry juice and ginger ale in the punch. define the variable used in the equation and solve the equation. hint: 0.8x represents the number of liters of cranberry juice in the punch. (5 points) part b: how many liters of cranberry juice are present in the punch? show your work.
Answers: 1
Mathematics, 21.06.2019 17:00
Which graph corresponds to the function f(x) = x2 + 4x – 1?
Answers: 1
For problems 1—4 below, let = (3, and = (5, —2.—1) and let k = —4 (a scalar). 1. Determine whether t...
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