Questions Asked on
March 20, 2018

math
Find the angles of the rhombus if the ratio of the angles formed by the diagonals and the sides is 4:5.
asked by Anonymous 
physics
A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough
asked by katie 
Math 201
I am having problems with this question in my math class. Consider a student loan of $25,000.00 at a fixed APR of 12% for 25 years. a. Calculate the monthly payment. The monthly payment is $263.31 b. Determine the total amount paid over the term of the
asked by Stephanie 
physics
10. A 3 kg block moves up a 40° incline with constant speed under the action of a 26N force acting up and parallel to the incline. What magnitude force must act up and parallel to the incline for the block to move down the incline at constant velocity?
asked by Anonymous 
Math:)
Explain why sin^1[sin(3pi/4)] does not = 3pi/4 when y=sin(x) and y=sin^1(x) are inverses. Any help on this question is greatly appreciated. Thank you!
asked by girly girl 
Math
The formula S=6a^2 can be used to find the surface area of a cube. if S=6cm^2, what is the side length,a, of each face 1cm 2cm 1/6cm 3cm
asked by XX 
physics
A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough
asked by amanda 
Calculus
A uniform layer of ice covers a spherical waterstorage tank. As the ice melts, the volume V of ice decreases at a rate that varies directly as the surface area A. Show that the outside radius decreases at a constant rate.
asked by Mike 
Chemistry
A water chemist obtained a 250 ml sample from a nearby lake and fixed the oxygen onsite with alkaline solutions of MnSO4 and KINAN3. Returning to the laboratory, a 200 ml sample was analyzed by acidifying the sample with conc H2SO4 and then titrating
asked by Dalal 
Chemistry
1.If a solution absorbed violet light, what color would the solution appear to be? ________________ Calculate the concentration of a solution prepared by adding 15.00 mL of 2.00×10^−3 M KMnO4 from a buret into a 50.00 mL volumetric flask, which is then
asked by Naomi 
fraction
31/2 + 11/2=
asked by Jimmy 
Math:)
Which trigonometric functions are equivalent to tan(theta)? Select all that apply. (2 answers) a. tan(theta)**** b. tan(theta) c. tan(theta) d. tan(theta+2pi)**** e. tan(theta+pi/2)
asked by girly girl 
music
the romantic period of music was known for? A. vibrant and unexpected key changes B. little use of dynamic changes. C. few notable composers D. minimal sense of storytelling I need help with all the questions
asked by Anonymous 
Math:)
Which functions have the same transformations as f(x)=2csc(x1)3? Select all that apply. (2 answers) a. f(x)=2(x1)^23*** b. f(x)=[2(x1)]/[x3] c. f(x)=2sin(x3)*** d. f(x)=2e^(x1)3 e. (x1)^2+(y3)^2=2
asked by girly girl 
Chemistry
For the reaction 2HI=H2+I2.one mole of HI is introduced into a vessel at constant temperature.calculate the no of moles of I2 when equilibrium is reached (Kc=0.0156) Plz help me and give complete solution
asked by Faizan 
World History
What was the function of high culture in Classical Athens?
asked by Bethanie 
Physics
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = 28.0 cm). An object is placed to the left of the converging lens, and the final image produced by the twolens combination lies 19.7 cm to the left of the diverging
asked by Amy 
physics
Two objects are placed on the edge of a circle. They move in opposite directions from the same starting point in order to collide with each other. The first object moves at 0.1 rad/s, and the second moves at 0.25 rad/s. If both objects have the same
asked by arianna 
Math
Write an expression to describe a rule for the sequence. Then find the 100th term in the sequence. 5, 13, 21, 29, 37, 45 1)8n;800 2)8n3;797 3)3n8;292 4)5+8n;805 I think #4 is correct. Thank you.
asked by Jamie M 
Math:)
The data in the table represents the average number of daylight ours each month in Springfield in 2015, rounded to the nearest quarterhour. Jan~9.5 hrs Feb~10.5 hrs Mar~12 hrs Apr~13.25 hrs May~14.5 hrs Jun~15 hrs Jul~14.75 hrs Aug~13.75 hrs Sep~12.5 hrs
asked by girly girl 
History
“...[The] said Cooper Hughs Freedman with his wife...are to work on said farm and to cultivate forty acres in corn and twenty acres in cotton, to assist in putting the fences on said farm in good order and to keep them so and to do all other work on said
asked by Hi 
Chemistry
The interaction energy between an ion pair diminishes with separation distance r as a function of 1/r, whereas the interaction energy between two rotating dipoles diminishes as 1/r6. This means that ionion interactions are much longer range than
asked by Anonymous 
CHEMISTRY
1× SDS Running Buffer For this exercise, you will need to prepare 1 L of 1x SDS Running Buffer. The final composition of this buffer is: 25 mM Tris, 200 mM Glycine pH 8.3, 0.1% (w/v) SDS 1. To a 1 L beaker, add 500 ml of distilled water. Place a magnetic
asked by Samari 
maths
What time will a runner take to run a distance of 8 km at a speed of 15 km/hr?
asked by kumar 
chemistry
6NH3 + 2H2BO33N2H4 + 2B+ 4H2O+ 2OH name of the element oxidized:? name of the element reduced:? formula of the oxidizing agent:? formula of the reducing agent:? 3N2H4 + 2ClO33N2 + 2Cl+ 6H2O name of the element oxidized:? name of the element reduced:?
asked by natalie 
science
a 3300 mf capacitor recquired to store 0.5mj of the energy.find the potential difference to which the capacitor must be charged?
asked by lester 
Physics
A sample of 8.02×10^−1 moles of nitrogen gas (γ =1 .40) occupies a volume of 2.00×10^−2 m^3 at a pressure of 1.00×10^5 Pa and temperature of 300K. The sample is isothermally compressed to exactly half its original volume. Nitrogen behaves as an
asked by Anon 
Science
What is a transport system in plants
asked by Noor 
Math
The coordinates of three vertices of a certain parallelogram are (5,2), 2,6) and (10,9). Give the coordinates of a fourth vertex. Then give the coordinates of another point that could be the fourth vertex.
asked by Kathy 
Social studies
how did the mayflower compact set a precedent for democratic government in North America? A) the mayflower compact recognize in a stab Lish that people had the power to govern. B) The Mayflower compact set up a religious monarchy with loyalty to King
asked by Whoops 
IPC
the planet mars is located 228 million kilometers (2.28x10^11m) away from the sun. if it takes the sun 760 seconds to reach mars how fast is light travelling???
asked by Anonymous 
music
I can’t get back to the page but thank you Ms. Sue. I went back and found each answer individually and wrote them down. hopefully you can forgive me.
asked by Anonymous 
history
In this discussion, you will discuss the ways in which the United States fought pool cold war economically, common, socially, and politically, and which message you believed were the most effective in combating communism
asked by history help 
Math:)
1. Evaluate tan[sin^1(a)]. a. [sqrt(1a^2)]/1a^2 b. [sqrt(1a^2)]/a c. sqrt(1a^2) d. {a[sqrt(1a^2)]}/1a^2 I do not know the steps to find this answer and am not provided with a textbook. I have researched online some what, but I cannot seem to
asked by girly girl 
Algebra
How many small triangles are in a triangular grid that has 20 units on a side. Please show me a formula to figure it out . Thanks
asked by Cheyenne 
mathj
a box contains ten `pairs of shoes if four shoes are retired there are numeration (1 I) (2 I) (10 I) X is the set formed by 20 numbers Find the triplet Calculate probability P(Ai)
asked by juanpro 
Algebra
Evaluate these expressions N=4 N=3 N=10
asked by Kathy 
Science
If a bird at sea level requires a speed of 30 mph to have enough lift to fly, how fast must it fly for the same lift at 20,000 ft?
asked by Paul Barrett 
ss
Provide 3 details on how the farming revolution helped civilizations develop. plz i need help on knowing what to write!
asked by jman lbj 
science
Calculate the density of the wood?
asked by moses 
ALGEBRA 1!!!! PLS HELP!!!!
Ike's piggy bank contained only quarters and nickles. When he counted the money there was $21.65. If there were 121 more nickles than quarters, how many of each type of coin did Ike have in the bank?
asked by guitarpick03 
Tech
Okay, so I don't have Microsoft Word for mac, but my school usually uses word documents. I can access them, but I can't read comments or anything else. Please help?
asked by Tordy 
English
1. Mom jumps from the sound. 2. Mom jumps because of the sound. 3. Mom jumps _____ the sound. [ Does #1 mean #2? What is the meaing of 'from' in Sentence 1? What else can we use instead of 'from' in #3?]
asked by rfvv 
ALGEBRA 1!!!! PLS HELP!!!!
When Julia dumped out the big jar of dimes and nickles she found 287 coins. If there was $20.50 in the jar, how many of each kind of coin was there??
asked by guitarpick03 
ED tech
i need to know how technology has impacted police officers.
asked by unknown 
Math:)
A weight is attached to a spring that is oscillating up and down. it takes 3 sec. for the spring to complete one cycle, and the distance from the highest to lowest point is 4 in. What equation models the position of the weight at time t seconds? a.
asked by girly girl 
chemistry
Calculate the concentration of a solution prepared by adding 15.00 mL of 1.92E−3M KMnO4 from a buret into a 50.00 mL volumetric flask, which is then filled to the 50.00 mL graduation mark with distilled water.
asked by Julie 
Math
Subtraction with renaming Am very confused. Am trying to teach my little brother but am getting everything wrong. I have the right answer but the work does not add up to that. 6  3 2/5 I got 3 2/5 but the answer is 2 3/5 I donâ€™t understand can you
asked by Ali 
Chemistry
Calcium chloride contains calcium and chloride ions. Write the groundstate electron configuration for the calcium ion.
asked by Naomi 
Math
When Julia dumped out the big jar of dimes and nickles she found 287 coins. If there was $20.50 in the jar, how many of each kind of coin was there??
asked by guitarpick03 
Social studies
When did the Romans take over Italy? A: By 500 BC B: By 267 BC C: 125 BC D: By 100 AD
asked by Someone 
physics
A wheel has an angular speed of 85 rev/s when it experiences a constant angular acceleration of 100 rev/s2 which causes it to spin FASTER. During this time the wheel completes 26 rev. Determine how long the wheel was experiencing this angular acceleration.
asked by help! 
science
Which motion causes night and day on Earth? A. the Sun’s motion around its axis B. Earth’s motion around its axis*** C. Earth’s motion around the Sun D. the Moon’s motion around Earth I think the answer is B, but am I correct?
asked by ¯\_('')_/¯ 
Chemistry
What is the slope of the standard curve? Absorbance Concentration (M) 0.330 6.00 x 104 0.264 4.80 x 104 0.198 3.60 x 104 0.132 2.40 x 104 0.0660 1.2 x 104 What is the slope of the standard curve?
asked by Julie 
Geometry
Please help! I can’t figure this out, I’ve got the equation but that’s about as far as I can get. I have to find C sin24/77=sinC/162
asked by Jessica 
daily geography
Denmark, Norway, Sweden , Finland, And Iceland compromise an area called____? Is the correct answer Scandinavia or Nordic countries? I have seen both and I'm not sure which is correct.
asked by nicole 
Differential Equations
We have a question: X'={{1,0,0} {4,1,0} {3,6,2}}X; X(0)={1,2,30} I have worked out to the general solution but I don't think it's right. I have: X=C1 {0,0,1}e^2t + C2 {0,1,6} e^t + C3 [{0,2,6} + {0,1,6}t] e^t this gives me x(t)=0....
asked by Jefferson 
fine art
Name the first established female artist and tell at what point she became recognized. I'm confused on this question. I don't know whether it would be Judith Leyster or Sofonisba Anguissola. My textbook doesn't say exactly and I can't find it when I google
asked by huncho jack 
Tx History
1. How did ranchers show ownership of the cattle? * 1 point They would put them in a pen near their home. They would brand them. They would tie them up and keep them nearby*** They would fence them in on their property. 2. The growth of the railroads
asked by taytay 
Chemistry
Estimate the dipole moment, in Debye units, of the HI molecule based on difference in Pauling electronegativity between the atoms.
asked by Austin 
statistics
A population has an average of 150,000 with a standard deviation of 27,000. A random sample of 81 items is chosen. What is the standard error?
asked by anne 
chemistry
when iron III oxide reacts with vinegar? Is either of the materials reduced or oxidized? Vinegar is not oxidized or reduced right ? Because it still has an oxidation state of negative 1? The only thing that is reduced is Fe because it now has an oxidation
asked by Anonymous 
Math
From a point A, the angle of elevation to the top of a building is 50°. From point B which is 11 m closer to the building the angle of elevation to the top is 63°. How far is point B from the top of the building? How tall is the building?
asked by Jessie 
Calculus
Use left and right endpoints and the given number of rectangles to find two approximations of the area of the region between the graph of the function and the xaxis over the given interval. g(x) = 2x^2 − x − 1, [3, 5], 4 rectangles __ < Area < __
asked by si 
Science
0.005 mol of nonelectrolyte was dissolved in 50g of benzene. Calculate depression of a freezing point of this solution
asked by Ankur 
Social Studies
Compare the U.S. response to Soviet actions in Afghanistan with the U.S. response to Soviet actions in Poland. A. The United States condemned Soviet policy towards both countries. B. The United States adopted a policy of detente in both countries C. The
asked by I need help 
Math
There are 5 chaperones for every 14 kids on a field trip. If there are 152 people on the trip, how many of them are adults?
asked by Tee 
Physics
A missle is fired with a launch velocity of 4600 m/s at a target 1932 km away, at what angle must it be fired to hit the target? How long the missle is in the air before hitting the target?
asked by Rusty 
English
1. Less than 5,000 people live here. [Does 'less than 5,000' include '5,000'?] 2. More than 5,000 people live here. [In math, does 'more than 5,000' include '5,000'?]
asked by rfvv 
math
Each ticket to a school dance is $4. The total amount collected in ticket sales is $332. Write and solve an equation to find the number of students attending the dance.
asked by robin 
Physics
A sealed container of volume V =0 .10m^3 holds a sample of N =3 .0×10^24 atoms of helium gas in equilibrium. The distribution of speeds of the helium atoms shows a peak at 1.1×10^3 ms^−1. (i) Calculate the temperature and pressure of the helium gas.
asked by Anon 
math
A hurricane has wind speeds that are greater than or equal to 74 miles per hour. Write an inequality to represent the possible wind speeds during a hurricane.
asked by robin 
math
One third of the viewers at a movie opening rated the movie as Good or Very Good. Thirtyfive people rated it Good and twenty people rated it Very Good. Write and solve an equation to find the number of people p in the audience.
asked by robin 
physics
Did I do a) and b) right? The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s2. Disregard any pulley mass or friction in the pulley and let M = 2 kg. a) What is the magnitude of the
asked by checking 
chem
If the heat of combustion for a specific compound is 1160.0 kJ/mol and its molar mass is 90.75 g/mol, how many grams of this compound must you burn to release 823.00 kJ of heat?
asked by rachel 
chem
A researcher studying the nutritional value of a new candy places a 3.50gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.23 °C. If the heat capacity of the calorimeter is 31.30
asked by rachel 
R M E
Discuss 5 ways we can teach religious and moral education to avoid indoctrination
asked by Michael Assifuah 
math
What is 5x3
asked by may 
math
what 30% of a 100
asked by may