# Anonymous

Questions and responses by Anonymous, page 11
1. ## Maths

Boy lost 0.3 of his marbles . He has 77 left . How many did he start with?

2. ## Math

What are the missing numbers between 10 22 34 46 58 on the number line

3. ## agebra

The graph represents the normal distribution of recorded weights, in pounds, of cats at a veterinary clinic. Which weights are within 2 standard deviations of the mean? Check all that apply.

The number of hours that college students sleep on a week night is approximated by a normal curve with a mean of 7 hours and a standard deviation of 1.7 hours. Answer the question below using a z table: About what proportion of students sleep less than 5

5. ## CHECK my drivers ed answers

1. Searching for other roadway users includes identifying (1 point) only those in motor vehicles. signs, signals, and roadway markings. users of different sizes and shapes. the characteristics of the roadway.**** 2. What is the Zone Control System? (1

6. ## History

How did the notion of the freedom of contract create opportunities and constraints on liberty?

7. ## Math

Suppose that the amount of time it takes to build a highway varies directly with the length of the highway and inversely with the number of workers. Suppose also that it takes 100 workers 6 weeks to build 4 miles of highway. How long will it take 160

8. ## Algebra

A college football coach wants to know if the is a correlation between his players' leg strength and the time it takes for them to sprint 40 yards. he sets up the following test and records the data: Every day for a week, he counts how many times each

9. ## College Physics

A student throws a 140 g snowball at 7.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall if the duration of the collision is 0.19 s ?

10. ## Math

A card is randomly drawn from a standard $52$-card deck. An ace of hearts wins the grand prize; any other ace or heart wins a small prize. What is the probability of winning a small prize? Express your answer as a common fraction. Assume that a grand prize

11. ## calculus

The rate of decay in the mass, M, of a radioactive substance is given by the differential equation dM dt equals negative 1 times k times M, where k is a positive constant. If the initial mass was 100g, then find the expression for the mass, M, at any time

12. ## Chemistry

Zn + 2 HCl = H2 + ZnCl2 / When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 degrees Celsius and a pressure of 854 mmHg?

22. ## chemistry

A solution contains 72.0 g of HCl and 468 g of (C6H6). What is the mole fraction of benzene?

23. ## calculus

A golf ball is hit off the top of a cliff that is 75 feet tall at an angle of 45° to the horizontal with an initial velocity of 80 feet per second. The quadratic equation shown below models the height, h(x), of the ball when it is x feet from the

24. ## Statistics

Selecting a letter of the alphabet: If 3 letters of the alphabet are selected at random, find the probability of getting at least one letter "x". Letters can be used more than once. My answer was: P(at least 1 "x) = 1 - (25/26)^3 = 1951/17576 or 0.11 Is

25. ## english

In which sentence is the underlined phrase a prepositional phrase functioning as an adjective? She went to boarding school in Coventry. My sister was born in Chicago. Her grades gave my sister a place in the top rank of her class. My sister moved away in

26. ## Solar Energy Help ASAP

Below you see a plot of an ideal and a non-ideal JV curve. Based on this plot and assuming an irradiance of 1000W/m2, give approximately the numerical values to the questions bellow: I. Estimate the ideal Fill Factor (in %): II. Estimate the non-ideal Fill

27. ## Solar Energy Help ASAP

Let's assume that solar light reaches a silicon solar cell with an angle of incidence of θi=0o. For simplicity, let's consider the refractive index of silicon to be nSi=3.5. The refractive index of air is nair=1. What percentage of light would be lost due

28. ## AP Chemistry

Consider the reaction 2 Al2O3(s) ! 4 Al(s) + 3 O2(g) . H = +3339.6 kJ/mol What is the change in heat when 0.455 L of a 3.60 M Al solution reacts with excess O2 ? 1. -424 kJ 2. -2735 kJ 3. -1695 kJ 4. -1368 kJ 5. -26,521 kJ 6. -21,962 kJ 7. -685 kJ 8.

29. ## math

A newly-opened restaurant has 5 menu items. If the first 4 customers each choose one menu item uniformly at random, the probability that the 4th customer orders a previously unordered item is a/b, where a and b are relatively prime positive integers. What

30. ## physics

We are given an input current Iin=100μA and a linear resistive load represented by the resistor RL . Our resistive load is not regulated for the high current provided by our current source, so we add a resistor RS in parallel to divide the current such

31. ## physics

A toy train rolls around a horizontal 1.0-{\rm m}-diameter track. The coefficient of rolling friction is 0.15. What is the magnitude of the train's angular acceleration after it is released?

32. ## maths-urgently needed

In right angled triangle ABC angle B=90 degree and AB= root 34 unit. The coordinates of point B and Care (4,2)and (-1,y) respectively. If area of triangle ABC = 17 sq.units, then find value of y.

33. ## chemistry

Suppose we want to charge a flask with 1.9 g of sugar. We put the empty flask on a balance and it is determined to weigh 170 g. Enter the weight we would expect to see on the balance when we're done adding the sugar.

34. ## Physics

A block slides from rest with negligible friction down a track, descending 5.0m to point P at the bottom. It then slides on the horizontal surface. The coefficient of friction between the block and the horizontal surface is 0.20. How far does the block

35. ## maths --plse help me..

a rectangle with perimeter 44 cm is divided into 5 congruent triangles as shown in the figure. what will be the perimeter of each of the congruent triangle?

36. ## physics

A simple pendulum consists of a ball connected to one end of a thin brass wire. The period of the pendulum is 2.0000 s. The temperature rises by 149° C, and the length of the wire increases. Determine the period of the heated pendulum

37. ## physics

(a) daredevil is attempting to jump his motorcycle over a line of buses parked end to end by driving up a 32° ramp at a speed of 4-0.0 m/s (14-4- km/h), How many buses can he clear if the top of the takeoff ramp is at the same height as the bus tops and