9c9f3b767119a8d40392c67a631abe6d.ppt
- Количество слайдов: 15
Do Now: Solve the equation (1. 1) 1. ) 3. ) 2. )
ACADEMY ALGEBRA II 1. 1: Linear Equations HW: Wed: p. 94 -95 (24, 26, 28, 48, 50, 60, 80) 1. 5: Solving Inequalities, 1. 6: Equations and Inequalities Involving Absolute Value HW: Thurs: p. 132 -133 (12, 16, 24, 66, 74, 104), p. 138 (12, 30, 32, 40, 46)
Using the Graphing Calculator (1. 1) • The calculator can be used to solve the equation via the intersection feature. Solve the following equation algebraically and graphically.
A burn victim needs to have the skin on his middle finger replaced. The finger can be modeled as a cylinder (with an open top) of radius r, and height, h. a. ) Write an equation relating the surface area S to r and h. b. ) Solve for h in terms of S and r.
1. 5: Inequality Notation(s) & Graph Interval (a, b) [a, b] [a, b) (a, b] [a, ) ( , a] ( , a) ( , ) Inequality Set Graph
1. 5: Solve the inequality. Graph the solution. 1. ) 2. ) 3. ) 4. )
Do Now (1. 5) In one province of Canada, the combined weight of normal triplets is typically between 9 lbs. 13 oz. and 22 lbs. 4 oz. Calculate the typical birth weight of each of the triplets.
Solve the equations. (1. 6) 1. ) 2. )
Solve the inequalities. (1. 6) 1. ) 2. )
Do Now (1. 7): Simple Interest, I, is I = Prt. Total money accrued after the t years is A = P(1 + rt). • P. 141 Ex. 2: Juanita borrows $500 for 6 months at the simple interest rate of 9% per year. What is the interest Juanita will be charged on the loan? How much does Juanita owe after 6 months?
p. 141 Ex 3 Candy has $70, 000 to invest and requires an overall rate of return of 9%. She can invest in a safe, government insured certificate of deposit, but it pays only 8%. To obtain 9% she agrees to invest some of her money in noninsured corporate bonds paying 12%. How much should be placed in each investment to achieve her goal.
Mixture Problem A bottle of Tylenol (Runny Nose and Cough) contains a total of 165 mg of the active ingredients Acetaminophen (A) and Dextromethorphan (D). For the manufacturer ingredient D costs $5/g and ingredient A costs $12/g. If the cost (to the manufacturer) of the bottle of medicine per gram is $9. 90, how much of each active ingredient is placed in each bottle of the medicine?
Uniform Motion: D = rt. p. 143 Ex 5 Tanya who is a long distance runner, runs at an average velocity of 8 mi/hr. Two hours after Tanya leaves your house, you leave in your car and follow the same route. If your average velocity is 40 mi/hr, how long will it be before you catch up to Tanya? How far will each of you be from your home?
p. 144 Ex 6 A motorboat heads upstream a distance of 24 miles on a river whose current is running at 3 mph. The trip up and back takes 6 hours. Assuming that the motorboat maintained a constant speed relative to the water, what was its speed?
Constant Rate Job Problem: p. 145 Ex 7 At 10 am Danny is asked by his father to weed the garden. From past experience, Danny knows that this will take him 4 hours, working alone. His older brother, Mike, when it is his turn to do this job requires 6 hours. Since Mike wants to go golfing with Danny and has a reservation at 1 pm, he agrees to help Danny. Assuming no gain or loss of efficiency, when will they finish if they work together? Can they make the golf date?