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Which expression is equivalent to 7 3/4 - 1/2

A series RC circuit contains a 0.5 microfarad capacitor and a 500 ohm resistor. The circuit is operating at a frequency of 2,000 Hz. What is the impedance of the circuit? (A) 500 ohms (B) 809 ohms (C) 2,006 ohms (D) 525 ohms

Calculate the change in pressure required to change the freezing point of water at 1°C and 0°C if heat of fusion of ice is 333.5 j/cm³ and density of water is 0.998g/cm³ and of ice is 0.9168g/cm³?

The 40-hour work week is considered the standard in American society today. Imagine you wish to use data from the 2010 General Social Survey (GSS) to determine whether the mean number of hours worked per week by respondents in the sample differs from the 40- hour standard. a When 81 workers (n) were surveyed how many hours they worked in the previous week, the mean was 44.1 (x-bar) with a standard deviation of 12.8 (sx). Does this suggest that the population mean workweek for workers is different from 40 hours per week? Assume an a = .05. In answering this question, use the six steps below (copy and paste the steps in the space below, and fill in your answers to each question): 1. State the null and research hypotheses 2. State the level of significance, alpha (a) 3. Select a sampling distribution and state the test statistic 4. State the rejection region (critical test statistic) 5. Calculate the research test statistic and see if it falls in the rejection region 6. State your conclusion in terms of the problem

Plane A has just 1 ton of fuel left and has requested plane B to refuel it. Plane B has 21 tons of fuel. Fuel transfer happens at the rate of 1 ton per minute. Use this information as you work through the activity and find how long it will take to refuel plane A until both planes have the same amount of fuel.

Alex paid $4.40 for 2.5 pounds of walnuts . What is the cost of one pound of walnut

A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting exactly four twos. . A. 0.202 . . B. 0.075 . . C. 0.101 . . D. 0.083 .

Someone Pleasee help!!!!

Write a letter to your dad about anything.​

When looking at the differences in the statistical measurements of Group A and Group B, which differences have a value of $1 or less? the median and the mode the mean and the range the mean and the median the mode and the range

In Australia and New Zealand, the king or queen of the United Kingdom is the head of state. These countries have a as their system of government A. constitutional democracy B. precedent C. constitutional monarchy D. federation

pls answer my exams are there

Janice makes a box in the shape of the rectangular prism. Show your work and explain how you solved using first, next & last. What is the surface area of the box

sound travels through dry air at the rate of 343.2 meters per second.Create an equation anf table to show the distance (d) that sound travels during any given length of time (t).

The path of the seismic wave changes at the boundaries of each layer because A.seismic waves always change direction after a few miles. B. each layer has different properties. C. each layer is made out of the same material. D. the layers are different sizes.

why do you think wilson is reffered to as the loud soldier

The day we found the sharks' teeth was foggy and cool. Moisture hung in the air so thick you could almost see it sparkling in the dim sunlight. There were days, early in the summer like this one, where it seemed there was more water in the air than in the bay. We had beached the boat and stepped out on the recently cleared spit of land. The ground had a light dusting of white sand over an under layer of dried black mud. It looked like a recently frosted chocolate cake, though the frosting was spread a bit thin for my taste. The ground was solid, but we knew from experience that it was full of fiddler crab holes, and would be underwater at the first super-high tide. Mysteriously, to us anyway, someone wanted to build a house there. We often came to these spots to look for artifacts. Our beach, our summer home, had been a fishing camp for as long as anyone living could remember. The oldest stories told of travelers coming down to the edge of the sea, lining up to fill their wagon beds with salted fish to take back home. Old decaying cabins still lined the beach. Rotting nets, hung out to dry in the last century, decorated their weathered walls. Their broken faces spun stories in our minds. The fishermen who, tanned and wrinkled from sun and salt, hauled their nets full of splashing mullet in to cheers from the waiting crowds. The bounty of the sea lightened everyone's hearts, and the smell of roasting fish filled the damp air. Women fanned themselves from wagon seats. Children splashed in the shallow edges of the bay. It was a scene we had acted out as youngsters, building an imaginary bridge to a life we would never fully know. Read this sentence from the text: Old decaying cabins still lined the beach. What is the main effect of the word decaying in this sentence? 1 It suggests a dislike of the cabins. 2 It suggests a fearful community. 3 It suggests a lack of life. 4 It suggests something horrible happened.

In Passage 1, paragraph 7, the author uses cause and effect text structure to communicate which of the following ideas? a. that only one-third of all space debris is currently being tracked b. that the ISS should do more to prevent the collisions of satellites c. that satellites from other countries are being deliberately destroyed adding to the problem d. that recent events have increased the amount of space debris, increasing the likelihood of collisions

Which term specifically refers to the sacred duties of all Muslims?A)The Five PillarsB)The Eightfold PathC)The Ten CommandmentsD)The Twelve Steps

Use the function f(x) = 2x3 - 3x2 + 7 to complete the exercises. f(−1) = f(1) = f(2) =

A ski tow operates on a slope of angle 14.0^\circ of length 250 m. The rope moves at a speed of 13.0 km/h and provides power for 54 riders at one time, with an average mass per rider of 75.0 kg. Estimate the power required to operate the tow. ?

Use Lagrange multipliers to find the points on the cone z² = x² y² that are closest to the point (18, 12, 0). a) (3, 2, 0) b) (6, 4, 0) c) (9, 6, 0) d) (12, 8, 0)

What is the measure of an exterior angle of a regular pentagon?

Answer with the letter please! how did the american and french revolutions affect enslaved people in haiti? A. haitians believed they could defeat the british if the americans did. B. haitians saw that americans were able to get equality for all people. C. haitians realized that they could win independence without using violence. D. haitians were encouraged to declare their right to self-rule.

Corrine wrote temperatures in degrees Celsius and the equivalent temperatures in degrees Fahrenheit.