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MATH SOLVE
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Solve the trigonometric equation in the interval [0, 2π). Give the exact value, if possible; otherwise, round your answer to two decimal places. (Enter your answers as a comma-separated list.) sin(2θ) − cos(θ) = 0
General
2 months ago
In a trolley ride around an amusement park, a child traveled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child traveled from the first signpost to the second signpost greater than 0.8 kilometer? (1 kilometer = 1,000 meters) (1) It took less than 450 seconds for the child to travel from the first signpost to the second signpost. (2) It took more than 400 seconds for the child to travel from the first signpost to the second signpost.
General
2 months ago
A parabola has an x-intercept of -1, a y-intercept of -3, and a minimum of -4 at x = 1.Which graph matches this description?
General
2 months ago
i need help with 18-21
General
2 months ago
Working alone at its constant rate, pump X pumped out \small \frac{1}{4} of the water in a tank in 2 hours. Then pumps Y and Z started working and the three pumps, working simultaneously at their respective constant rates, pumped out the rest of the water in 3 hours. If pump Y, working alone at its constant rate, would have taken 18 hours to pump out the rest of the water, how many hours would it have taken pump Z, working alone at its constant rate, to pump out all of the water that was pumped out of the tank?
General
2 months ago
L :V --> W is a linear transformation. Prove each of the following (a) ker L is a subspace of V. (b) range L is a subspace of W.
General
2 months ago
A personal computer manufacturer buys 36% of its chips from Japan and the rest from the United States. Of the Japanese chips, 1.9% are defective, and 1.2% of the American chips are defective.Find the probability that a chip is defective. (Round your answer to four decimal places.)?
General
2 months ago
Substitute x with (-2) and y with (-4)Simplify: 5(41 - x) + {-7(y + x)} =
General
2 months ago
If m∠a=47°, what is m∠b, m∠c, and m∠d? Explain how you know the measures are correct.
General
2 months ago
Examine the steps for finding the product of (224)(16) in the example shown. Line 1:200+20+4 Line 2: ×10+6−−−−−−−−−− Line 3: 1200+120+24 Line 4: +2000+200+40−−−−−−−−−−−−−−−−−−−−−− Line 5: 2000+1400+160+24 What are the corresponding steps used to find the product of (2x^2+2x+4)(x+6)?Select one correct answer for each step.Line 2: 10x+6Line 5: 2x^3+14x^2+16x+24Line 2: x+6Line 1: 200x^2+20x+4Line 3: 1200x^2+120x+24Line 4: 2x^3+2x^2+4xLine 1: 2x^2+2x+4Line 4: 2000x^3+200x^2+40xLine 3: 12x^2+12x+24Line 5: 2000x^3+1400x^2+160x+24
General
2 months ago
A certain three-cylinder combination lock has 65 numbers on it. To open it, you turn to a number on the first cylinder, then to a second number on the second cylinder, and then to a third number on the third cylinder and so on until a three-number lock combination has been effected. Repetitions are allowed, and any of the 65 numbers can be used at each step to form the combination. (a) How many different lock combinations are there? (b) What is the probability of guessing a lock combination on the first try?
General
2 months ago
Bill drove to town hall and back. The trip there took 1.5 hours and 2hrs on trip back. If bill's speed there was 12 mph faster than on the way back , find his average speed on the way back.
General
2 months ago
According to a recent article the average number of babies born with significant hearing loss (deafness) is approximately two per 1,000 babies in a healthy baby nursery. The number climbs to an average of 30 per 1,000 babies in an intensive care nursery. Suppose that 1,000 babies from healthy baby nurseries were randomly surveyed. Find the probability that exactly two babies were born deaf.
General
2 months ago
Monica came home from trick or treating on Halloween night and had 36 pieces of candy in her bag. Each day she eats 2 pieces of candy and after a certain amount of days there are only 12 pieces of candy left. In how many days did she eat the candy ?
General
2 months ago
In a school election, 34 of the students vote. There are 1464 ballots. Write and solve an equation to find the number s of students. An equation is =1464. There are a total of students.
General
2 months ago
Question 8 (5 points)Simplify (tanx- secx) (tanx+ secx).1 -1sec^2xtan^2x0
General
2 months ago
Find the solutions of each quadratic equation factoring.2. 10x^2=6x4. 16x^2=8110. 5x^2+11x+2=0
General
2 months ago
Question 7 (5 points)Solve -4 + 6 sin x = -4 + 4 sin x for 0° less than or equal to x less than or equal to 180°.135 degrees 30 degrees180 or 0 degrees 90 degrees
General
2 months ago
On the field trip, Abbey, Bethany, Christine, and Darcy bought a total of 4 hot dogs and 3 sodas, which cost the girls $17.00. Edward bought 2 hot dogs and 1 soda from the same lunch stand and it cost him $7.80 before tax. How much would one hotdog and one soda cost before tax?
General
2 months ago
477 ÷ 9 = ? (Dividing With Distributive Property)
General
2 months ago
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