riley

Popular questions and responses by riley
1. Math

Which of the following transformations will never produce a congruent figure? A. rotation B. reflection C. translation D. dilation

2. Math

On the spinner below, what is P(odd) The numbers on the spinner are 13543256 Answers A. 5/8 B. 5/3 C. 1/2

3. English

I need some help with the answers to these questions, (mainly to see if I'm correct, where I'm wrong and WHY I'm wrong) 1. What is the verb mood of the sentence below? Wear your coat when you are in the school indicative mood imperative mood ***my answer

4. Calc

A beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the volume of the ball is 256/3(pi) cubic centimeters, what is the rate of change of the surface area? (S=4(pi)r^2 and V=4/3(pi)r^3)

5. Algebra

whats the answers to the "why are mr. and mrs. number so happy

6. math

On a centimeter dot grid, draw all possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters.

7. Chemistry

Is the solvation of borax in water an exothermic or endothermic process? i am thinking the it is endothermic...is that right?

Someone please help me with this!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle

9. Algebra 2 (Math)

What is the vertex form of the equation? y = -x^2 + 12x - 4. I have no clue how to do this.

10. English

24. Your responses include the following to receive the points in parentheses: ~ Respond in one or two paragraphs. Answer is written in complete sentences. Write one or two paragraphs to answer the question below. Include at least two supporting details or

11. physics

Two boxes are connected by a cord running over a pulley. Box A is on a table and Box B is hanging off of the pulley. The system is released from rest and Box B drops a distance D. What is the word done by gravity on box B?

12. Science

I need an acrostic poem for the word waves.

13. math

Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?

14. physics

Two ice skaters have masses m1 and m2 and are initially stationary. Their skates are identical. They push against one another, as in Figure 7.10, and move in opposite directions with different speeds. While they are pushing against each other, any kinetic

15. chemistry

The "Chemistry in Focus" segment A Magnetic Moment discusses the ability to levitate a frog in a magnetic field because electrons, when sensing a strong magnetic field, respond by opposing it. This is called diamagnetism. Atoms that are diamagnetic have

16. Math

1)Let AB be the directed line segment beginning at point A(1 , 1) and ending at point B(-4 , 6). Find the point P on the line segment that partitions the line segment into the segments AP and PB at a ratio of 5:1. A)(-3 1/6,5 1/6) B)(1/6,1 5/6)

17. Calculus-Applied Optimization Quiz Problem

A rancher wants to fence in a rectangular area of 23000 square feet in a field and then divide the region in half with a fence down the middle parallel to one side. What is the smallest length of fencing that will be required to do this?

18. Physics

Two charges 10uC (point A) and -10uC (point B) are placed 10cm from each other. Find the electric field at a point P perpendicular bisector of AB at a distance 12cm from the middle. Can someone get me started on this one? I'd appreciate any help. Thanks

19. c programming

a student designed a program to accept the age of an employee and then compute the employees retirement year and display the same in a statement on the screen required. a) write out the pseudo-code for the program above b) write the algorithm, c) flowchart

20. CHEMISTRY

Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate

21. Stats

The workers union at a certain university is quite strong. About 94% of all workers employed by the university belong to the workers union. Recently, the workers went on strike and now a local TV station plans to interview a sample of 20 workers ,chosen at

22. Math

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 3x + 10 y is less than negative 3 over 4 times x minus 1 Part A: Describe the graph of the system, including shading and the types

23. algebra

A wire 20 cm long is cut into two pieces. The longer piece is 4 cm longer than the shorter piece.

24. Language Arts

Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the water, Or

25. physics

Two books are stacked on top of each other. Book 1 is on top of Book 2. Book 1 has a string attached to it. The string is connected to the wall. The wall is to the left of the stacked Books. Book 2 is pulled to the right with a force F big enough to move

26. physics

A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. As the drawing shows, one person hits the water 5.00 m from the end of the slide in a time of 0.386 s after

27. chemistry

Consider the following double displacement reactions. For each reaction, complete and balance the equation and give the net ionic equation. NH4Cl(aq)+Ca(NO3)2(aq) -> NH4(NO3)2+CaCl the second half of the equation is what I had done but I think its not

28. math

The diameter and the slant height of a cone are both 24 cm. Find the radius of the largest sphere that can be placed inside the cone. (The sphere is therefore tangent to the base of the cone.) The sphere occupies a certain percentage of the cone’s

29. Chemistry

What is the net ionic equation for this reaction? 3CuCl2(aq) + 2K3PO4(aq) = Cu3(PO4)2(s) + 6KCl(aq)

30. Science

1 Why is the area around the divergent boundary also known as the sea floor spreading 2 Features can be found around the sea floor spreading zone that indicates the plates are moving apart 3 Why do most seafloor spreading zones usually occur under water 4

31. physics

An archer shoots a 54.6 g arrow horizontally at a target 14.0 m away. The arrow is 18.0 inches long. The 54.6 g arrow is aimed directly at the center of the target, but it hits 60.0 cm lower. What was the initial speed of the arrow? (Neglect air

32. physics

A water tower sits on top of a hill and supplies water to citizens below. The difference in pressure between the water tower and the Dailey's house is 1.1x10^5 Pa, while the difference in pressure between the tower and the Stearns' house is 3.2x10^5 Pa.

33. Math

Use experimental probability to make a prediction. John made 35 free throws and missed 15. Predict the number of free throws he will make in the next 100 tries. A. 70 B. 85 C. 55 D. 45

34. Pre-Calculus

If sin(theta)=15/17 and cos(beta)=(-5/13 (both theta and beta are in quadrant II) find tan(theta+beta)

35. Physics

A skater of mass 80.5 kg initially moves in a straight line at a speed of 4.90 m/s. The skater approaches a child of mass 41.0 kg, whom he lifts on his shoulders. Assuming there are no external horizontal forces, what is the skater's final velocity?

36. Physics

A hockey stick applies a constant force over a distance of 0.127 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck?

37. stats

Anita's a fast food chain specializing in hotdogs and garlic fries, keeps track of the proportion of its customers who decide to eat in the restaurant so it can make decisions reguarding possible construction of the in-store play areas.the attendance of

38. Chemistry

In the reaction Ca → Ca2+ + 2e-, Ca is __________. A:reduced because it gains electrons B:reduced because it loses electrons C:oxidized because it gains electrons D:oxidized because it loses electrons

39. physics

A 0.25 kg skeet (clay target) is fired at an angle of 30 degrees to the horizon with a speed of 25 m/s. When it reaches the maximum height, it is hit from below by a 15 g pellet travelling upward at a speed of 200 m/s. The pellet is embedded in the skeet.

40. Physics

Show by algebraic reasoning that your gravitational acceleratoin toward an object of mass M a distance d away is a = GM/d squared and therefore doesn't depend on your mass.

69. Chemistry

The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to product. Consider the reaction: P4(s) + 6 Cl2(g) → 4 PCl3(l) If 19.47 g P4 is mixed with 6.85 g Cl2, calculate the theoretical yield

70. Chemistry

AgNO3 + NaCl -> AgCl + NaNO3 Which statement about this reaction is FALSE? A. This is one kind of metathesis reaction, where molecules exchange atoms. B. This reaction produces a gas. C. This is a precipitation reaction. D. The equation is balanced.

71. Chemistry

A sample of Chlorine occupies 8.50 L at 80.0 C and 740 mm Hg. What volume will Chlorine occupy at STP?

72. physics

A block of mass m is pressed against a vertical wall with a force F acting at an angle theta. What are the maximum and minimum forces of F that can be applied and still have the block remain stationary?

73. Chemistry

In a constant‑pressure calorimeter, 75.0mL of 0.950 M H2SO4 was added to 75.0 mL of 0.250 M NaOH. The reaction caused the temperature of the solution to rise from 23.24∘C to 24.94∘C. If the solution has the same density and specific heat as water

74. Climate

Which of the following statements about climate is FALSE? A. Deserts usually occur at very low altitudes. B. Temperatures usually decrease with altitude. C. Coastal temperatures are usually cooler than inland temperatures. D. The southern hemisphere is

75. History

In what present day states did the Dutch establish new Netherland?

76. programming

I am having trouble writing this program for java. can anybody help write a program that prints the letter X composed of asterisk.

77. Math

A set of stairs has a rise of 6 inches and a run of 9 inches. The building safety code says the stairs should rise at an angle of between 30 degrees and 35 degrees. Does this set of stairs meet the safety regulations? Justify your answer by showing

78. Physics

A 2.5 kg block of ice at a temperature of 0C and an initial speed of 5.7 m/s slides across a level floor. If 3.3*10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block id entirely converted

79. Physics

An airline pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25.0 N for 10.0 meters. The handle she pulls on makes an angle of 42.5 degrees with the horizontal. How much work does she do over the ten-meter distance? Tried doing:

80. physics

A tick is standing on a turntable at distance r from the centre. The static friction coefficient between the tick and table is us. The table is spinning at a constant angular frequency of w a) what values of r is the bug most likely to slip at? small or

81. Algebra 1 Solving Systems Using Elimination

What is the solution of the system? y = -3x 3x + 2y = 6 (2, 6) (-1, 3) (-2, 6) (1.5, -4.5)

82. us history

The most useful indicator of the degree of democracy reached by a particular society is whether it has a... formal method whereby people can effect changes in government policy, system of government checks and balances, two-house legislature, system of

83. STATISTICS

Suppose that a researcher is interested in estimating the mean systolic blood pressure, , of executives of major corporations. He plans to use the blood pressures of a random sample of executives of major corporations to estimate . Assuming that the

84. math

Scientists randomly caught 30 fruit bats at an orchard. They tagged the fruit bats and then released them. Several weeks later, they captured 20 fruit bats at the same location. They found that 4 of those fruit bats had tags. Assume the population of fruit

85. math

I'm doing a unit on volume and surface area. So there's a diagram that shows a fish tank after a container of water is poured into the tank. How many containers of water are needed to fill the tank? What is the formula to finding this?

A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an

87. chemistry

What is the energy of green light with a wavelength of 5.50x10^-7m?

88. Mathematics

A right circular cone of base radius r cm and height h cm fits exactly into a sphere of internal radius 12cm. a)Express r in terms of h. b)If the volume of the cone is Vcm cube, show that V=8¶h^2 - 1/3¶h^3 c)Find the value of r for which V has a turning

89. Biology

In biology, would effectiveness and neutralizing mean the same thing for anti-acids? Like if alka-seltzer was more effective than tums, would it make it a better neutralizer?

90. Algbra 1

x varies directly with y and z x=1200,when y=20 and z=30. Find x when y=10 and z=20

91. physics

IP A jogger runs with a speed of 3.10{\rm m/s} in a direction 25.0{^\circ} above the x axis. Find the x and y components of the jogger's velocity.

92. Math

There are 7 girls on a bus. Each girl is carrying 7 backpacks. In each backpack, there are 7 big cats. For each big cat, there is 7 little cats. How many legs are there? My answer was 10,990 legs. My teacher said it wasn't right, although it was very

93. Physics

A bar with a mass of 20kg with a length of 30m is being lifted by a string and makes an angle of 55 degrees. The string is attached to the ceiling vertically. What is the tension on the string? What is the normal force given by the bar on the string what

94. Chemistry

For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) ---> NH4HS (s)

95. Physics

Two forces are applied to a car in an effort to move it, as shown in the following figure (cannot attach picture), where F1 = 416 N, 10 degrees to the left of north and F2 = 356 N, 30 degrees to the right of north. What is the sum of these two forces

If a sample emits 1000 counts per second when the detector is 1 meter from the sample, how many counts per second would be observed when the detector is 2 meters from the sample?

98. calculus

I am suposed to apply L'Hospitals rule to solve. I can't seem to solve it tho. could someone explain the steps to me? Thanks! the limit as x approaches infinity of: xe^(1/x)-x This is what I got so far: xe^(1/x)-x x(e^(1/x)-1) e^(1/x)-1/(1/x) Now its in

99. calculus

Find the cubic function f(x)=ax^3+bx^2+cx+d that has a local max value of 3 at -2 and a local min values of 0 at 1. I have no idea how to solve this. Could you please give step by step answers and explanations for the steps. Thanks!