# Posts by Eric

Total # Posts: 852

Thanks
2. ### maths

eric scored 82 ,74,and 90 in three test . what mark should she score in the fourth test , so that her average mark for the fourth test would be 85
3. ### Math

Is the initial area 1000 sq feet?

Thx
5. ### Pre-Algebra/Algebra

In an y=my+b equation what is y?
6. ### math

which is the greater length,2 yards or 5 feet

I was just wondering what the tone of the lines, “Your breath moves through the family like the wind moves through the trees“ at the end of the poem “A Voice“. Thanks!
8. ### Science

The friction caused with the traction of tennis shoes is strong than that of a flip flop (tread), so it would be harder, but still easy, to trip while wearing tennis shoes.
9. ### Physics

Does that apply for weight, or only mass, cause it's asking for weight.
10. ### Physics

When an object is moving at a normal speed, is it's weight larger than when it's stationary?

12. ### algebra

Look at how many cars are made by all 3 plants in one day. Add up those amounts, then divide 1600 by that number. Your equation should look like this: 1600÷ (100+80+70)=Amount of days needed.
13. ### Math

The new facility is the square in shape the link of one of the walls is 20 feet how many square feet is the facility
14. ### Statistics

The mean score on a test was 280 and the standard deviation was 20. You want to pick the top 15%. What will be the minimum cutoff score to be in the top 15%?
15. ### Math

If you are dealt 2 cards from a standard deck of 52 cards what is the probability that they will both be aces? Give answers as decimal to 5 decimal places not percent.
16. ### math

The mean score on a test was 280 and the standard deviation was 20. You want to pick the top 15%. What will be the minimum cutoff score to be in the top 15%?

49. ### Math

What is the result of converting 1500 yards into miles?
50. ### Calculus

Evaluate the definite integral (low) (high) -?/6 ? ?/6 2sec(x)tan(x) dx
51. ### Calculus

Find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. f(x) = 4?x [4, 9]

0 = theta
53. ### Calc

Find the critical numbers of the functions. f(0) = 2sec0 +tan0 on the interval [0,2pi]
54. ### Math

Simplify (Log75+log9+log5)÷(log5+log45)
55. ### math

The ratio of two numbers is 3:5, the smallest number is 45 what is the larger number?
56. ### social studis

In this lesson, you learned that government officials represent citizens at the state and local levels as well as at the national level.
57. ### math

in which stem do most of the data fall 1 ,2 3, or 4
58. ### Math

in which system do most of the data fall 1 ,2 3, or 4. plzzzzz help me

C 15
60. ### art

this piece of art primarily represents art that
61. ### What is the probability that a randomly

what grade are you I go to connexus i am in 6th grade
62. ### PE

How does esteem affect the way you behave?
63. ### Physics

A batted baseball leaves the bat with a velocity of 41.4 m/s at an angle of 51.2°. If the ball just barely clears the 3.05 m (10 ft) center field wall, a. How long was the ball in the air? ___s b. What must the range be from home plate to the center field wall? ___m c. How...
64. ### Physics

Physics teacher has this question for hw. 38. An electric powered model car starts from rest and moves in a straight-line for 4.0 s. The relationship between time and position is x^2+ 2 t^2 = 32, t in seconds and x in cm. Find the velocity at t= 1 s & t = 3 s. he gave us the ...
65. ### Chemistry

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 26.4 g of carbon were burned in the presence of 82.1 g of oxygen, 11.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced? Express your answer to one decimal place and ...
66. ### Educational Technology and Online Learning

what is the purpose of the introduction in an expository essay
67. ### Math

Whats the function rule when inputs 2,3,4,5 and outputs 2,5,8,11?

.25
69. ### Maths

Ruby has 20 oranges. she eats 3/5 of the oranges. How many oranges did she eat
70. ### Math

Sorry I don't know.
71. ### Maths

how to solve 150 pupils went to concert.3/4 of the number of boys was equal to 1/7 of the number of girls. how many boys went to the concert?
72. ### Geometry

A vertical pole 24ft. high is to be braced securely by four wires attached 8ft. from the top. If the wires are fastened to stakes in the level ground at the vertices of square with its center at the foot of the pole and sides 20ft., what should be the length of each wire?.
73. ### Chemisty

Will Cd(OH)2 precipitate if 10.00 g of Cd(NO3)2(s) (MM = 236.42 g/mol) is added to 0.500 L of a 0.800 M NH3 solution?
74. ### Health

Coolio is correct, listen to him, Asexual got one wrong.
75. ### Math

The large rectangle shown, is composed of five congruent smaller rectangles, each with whole number dimensions. If the perimeter of each smaller rectangle is 20 com, find the are of the entire large rectangle in sq cm.
76. ### Physic

A large concave mirror has radius of 6.32m. To magnify an object 1.25m tall by a factor of +2.5 Must the object be placed Will the image appear to be Describe the image 3 things What is the image height
77. ### Physic

A large concave mirror has radius of 6.32m. To magnify an object 1.25m tall by a factor of +2.5
78. ### Chemistry

Using the equation: 2C2H6 + 7O2--> 4CO2 + 6H20 How many moles of CO2 are produced by the reaction of 21.0 mol O2? Again, not sure how to write it correctly, but if I multiply 7O2 by 3, then I should do the same to the other side of the equation to make it 12CO2?
79. ### Chemistry

From the same equation as above, how many moles of CO2 are produced by the reaction of 21.0 mole of O2? 21 moles of O2 means that you would need to multiply 7O2 in the quay ion by 3, so 3 x 4CO2= 12CO2?
80. ### Chemistry

Using the equation: 2C2H6 + 7O2--> 4CO2 + 6H20 How may moles of 02 are needed to react with 4.0 mol of C2H6? I think the answer is 14, because if you double the C2H6 to make 4.0 mol, then in the equation you will need to double the O2 to 14. Is this correct?

x= -13
82. ### math

A number plus itself, plus twice itself, plus 4 times itself, is equal to -104. What is the number?
83. ### math

A pair of dice is rolled.What is the probability that the sum of the pips is either an even number on a multiple of 3? total number of space is 36.
84. ### Math

An enclosed rectangular garden is 6 meters by 15 meters. Additional fencing within the garden can divide it into three smaller plots, two of them square and one rectangular. What is the least number of meters of additional fencing that is needed?
85. ### Algebra

Tell whether the lines for each pair of equations are parallel perpendicular of neither y=-3x+7 -2x+6y=3 Tell whether the lines for each pair of equations are parallel perpendicular of neither y=(-1/5)x=6 -2x+10y=5

87. ### Algebra (Urgent)

Which of the following lines are perpendicular to the line y=-1/4x+6 (you may choose more than one answer) 4x-y=2 y=4x 4x+y=6 1/4x-y=6 -4x+y=3
88. ### Physics

Three positive point charges are located at the corners of a rectangle. Find the electric field at the fourth corner if q1 = 5 nC, q2 = 6 nC, and q3 = 7 nC. The distances are d1 = 0.6 m and d2 = 0.2 m. (Let the positive x-direction be to the right, and the positive y-direction...
89. ### Physics

In the bloodstream, an erythrocyte (red blood cell) of mass m moves with velocity v to the right. Ir collides head-on with a leukocyte (white blood cell) of twice its mass moving to the left with three times its speed. After the collision, the became stuck together. What would...
90. ### Physics

A spring with k=1400N/m is firmly anchored to the bottom of a swimming pool. A diver in full SCUBA gear with total mass of 100kg and density of 0.65g/cm3 holds on to the top of the spring. The system reaches a new static equilibrium. After the print is elongated by a length ...
91. ### Physics

Imagine a horizontal spring with an elastic constant of 26.5 N/m, held in place just above an air table. If a 2.00 kg mass traveling at 1.50 m/s slams axially into the end of the spring, by how much will it be compressed in bringing the mass to rest?

25.6g
93. ### Introduction to computers

You call the help desk to report a problem you are having on your computer. The technician asks you what operation system you are running. You know it is windows 7 but you forgot which version . How can you find out.
94. ### Introduction to computers

Which Microsoft operating system started the process of authenticating users with a username and password
95. ### Introduction to computers

The command prompt found on Windows 7 and Windows 8 is very similar to the interface of what past operation system.

asdfsd
97. ### Chemistry

Is nickel 2 chloride an anion or cation ?? Is sodium chloride an anion or cation ?

i dont know
99. ### physics 11

A swimmer swims perpendicular to the bank of a 20.0 m wide river at a velocity of 1.3 m/s. Suppose the river has a current of 2.7 m/s [W]. (a) How long does it take the swimmer to reach the other shore? (b) How far downstream does the swimmer land from his intended location?
100. ### math

From cape to home is 500km I drive from Home at a 100km/h how long will it take in hours
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