Mathematics

Express the negations of each of these statements so that all negation symbols immediately precede predicates. a. zyxT (x, y, z) b. xyP (x, y) xyQ(x, y) c. xy(Q(x, y) Q(y, x)) d. yxz(T (x, y, z) Q(x, y))
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A 100 point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response question are worth 8 points each. Write a linear system that represents this situation. How many multiple choice and short response questions are on the test?
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Exercise 1.28. We have an urn with m green balls and n yellow balls. Two balls are drawn at random. What is the probability that the two balls have the same color? (a) Assume that the balls are sampled without replacement. (b) Assume that the balls are sampled with replacement. (c) When is the answer to part (b) larger than the answer to part (a)? Justify your answer. Can you give an intuitive explanation for what the calculation tells you?
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: A theater sells tickets for a concert. Adult tickets sell for $6.50 each, and children's tickets sell for $3.50 each. The theater sells 548 tickets for $2,881. How many types of each type were sold?
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There are 3 feet in 1 yard. during the first play of a football game, one player runs the ball 10 yards before stepping out of bounds. the coach records the distance in feet and yards
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A given field mouse population satisfies the differential equation dp dt = 0.5p 410 where p is the number of mice and t is the time in months. (a) Find the time at which the population becomes extinct if p(0) = 770. (Round your answer to two decimal places.) 25 Incorrect: Your answer is incorrect. month(s) (b) Find the time of extinction if p(0) = p0, where 0 < p0 < 820. Incorrect: Your answer is incorrect. month(s) (c) Find the initial population p0 if the population is to become extinct in 1 year. (Round your answer to the nearest integer.) p0 = mice Additional Materials
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What is -1/4(+2)+5=-
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Determine if the ordered pair (-2, 1) is a solutionof 2x y=-3.
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300% of what number is 51
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Sasha runs at a constant speed of 3.8 meters per second for 1/2 hour.Then she walks at a constant rate of 1.5 meters per second for 1/2 hour.How far did Sasha run and walk in 60 minutes?
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PLEASE HELPPP!!! QUESTION AND ANSWERS IN PICTURE !!!
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Write 10+0.06+0.008 in word form
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Vocabulary How can you tell ifafraction is a unit fraction?
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which doesn't round to 4.7 4.746, 4.733, 4.647, or 4.680
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A 25-foot ladder is leaning against a house with the base of the ladder 5 feet from the house. How high up the house does the ladder reach? Round to the nearest tenth of a foot. The ladder reaches feet up the side of the house
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Solve the proportional equation below:10/2=a/a-9a. 11.25b. 7c. 2d. 1.125
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Use I = PRT to solve. (time in years) P= $400 R= 9% T= 0.25 years Find I (remember, 9% = 0.9 in decimal form
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one quarter of a number increased by 2/5 gives 4/5. what is the number
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which is the product of 7/9 and 6?
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A sociologist is studying the effect of having children within the first two years of marriage on the divorce rate. Using hospital birth records, she selects a random sample of 200 couples that had a child within the first two years of marriage. Following up on these couples, she finds that 80 couples are divorced within five years. Use Scenario 8-4. A 90% confidence interval for the proportion p of all couples that had a child within the first two years of marriage and are divorced within five years is 0.402 0.056.a. All the answers are correct.b. Based on this interval, we can clearly see that the divorce rate is well below the 50% national average for all marriages.c. At the 10% alpha level, we would reject the claim that the divorce rate is 50% for couples who had a child within the first two years of marriage.d. Based on this interval, we can clearly see that the divorce rate is between 35% and 46%.
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The area of a rectangle is 45x^8y^9 sq yards if the length of the recatngle is 5x^3y^4 yards, which expression represents the width of the rectangle in yards
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y=2x 34x 3y = 7
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A 10 metre length of Wood is marked out into 10 equal lengths. How many metres from one end is the third mark?
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On the calculator, click on the graph of y = 3x and trace to view the coordinates. When the x-coordinate is 4, what is the y-coordinate?
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