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Ice cubes of total mass 6.00 grams have temperature -4.0°C. Then they are placed in 50.0 grams of water at 20.0°C in an
1. 0 answers
2. 700 views
Find the first order partial derivatives. z=ln(xy-sqrt(x^2-y^2)
1. 1 answer
2. 1,333 views
A fire hydrant that is 1.5 feet high casts a shadow that is 2.5 feet long. At the same time of day, a lamppost casts a shadow 15
1. 3 answers
2. 1,730 views
the mass of helium 4 atom is 6.64648 x 10^24 g and each of its two electrons has the mass 9.10939 x 10^-25 what fraction of the
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2. 549 views
If 200 cm3 of tea at 95°C is poured into a 150-g glass cup initially at 25°C, what will be the common final temperature T of
1. 4 answers
2. 2,753 views
Evaluate the given integral, where C is the circle with positive orientation.Cauchy integral theorem, integral over C
1. 0 answers
2. 669 views
How many quarts of permanent anti-freeze must be added to 10% quarts of a 40% anti-freeze solution in a radiator of a truck to
1. 1 answer
2. 580 views
A triangle is such that the largest angle is 12 times the smallest angle. The third angle is 20 less than the largest angle.
1. 1 answer
2. 640 views
Determine the enthalpy of 5.0 kg of water at 850 kPa.thankyou very much!
1. 1 answer
2. 950 views
If 25.4 kg of copper at 33°C receives 240 kJ of heat. Calculate the final temperature of the metal.
1. 1 answer
2. 2,189 views
What is the factor of safety for a steel hanger having an ultimate strength of 70,000 Newton percm2 and supporting a load of
1. 0 answers
2. 600 views
A hydraulic plunger has a 12 cm diameter and a force of 350 kN acts on it. What is the pressure exerted on the plunger?
1. 1 answer
2. 2,084 views
Could someone please help.Consider the function 3x^2-7. Find f(-2). a) -1 b) 5 c) -5 d) 0 I think its a) -1 but not sure. Thank
1. 1 answer
2. 294 views
Could someone please help.Consider the function 3x^2-7. Find f(-2). a) -1 b) 5 c) -5 d) 0 I think its a) -1 but not sure. Thank
1. 1 answer
2. 332 views
A ball is thrown from the ground level with a x-velocity of 25m/s and a y-velocity of 45m/s. What is the ball velocity at the
1. 1 answer
2. 476 views
The hook of a spring balance carries an object of mass 5kg And the balance is suspended vertically from the roof of a lift. Find
1. 0 answers
2. 608 views
A sofa cost $500 and is on sale for 20 % off. what is the final cost of the sofa after the discount?
1. 1 answer
2. 468 views
since a rectangle forms two area of a circle shouldn't it also form two circumference in a cylinder
1. 2 answers
2. 378 views
A reaction proceeds by the following three-step mechanism with elementary rate coefficients,k. A + B → C k 1 C → A + B k -1
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2. 485 views
Consider the system of components connected as in the accompanying picture. Components 1 and 2 are connected in parallel, so
1. 1 answer
2. 1,516 views
An academic department with five faculty members—Anderson, Box, Cox, Cramer, and Fisher—must select two of its members to
1. 4 answers
2. 4,221 views
(6- 1/2 I)-(3+ 9/2 I)
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2. 290 views
All of us have different stand on what to believe in and it varies because it depends on one’s life experiences.is my sentence
1. 2 answers
2. 430 views
all of us has or have?
1. 3 answers
2. 497 views
The next step is to construct side PS of the figure so that side PS is parallel and congruent to side QR. The chart below shows
1. 3 answers
2. 2,497 views
Two men and six boys can cut a field in 3hours. If the men work at 3/2 times that of the boys, how many men are required to cut
1. 3 answers
2. 1,420 views
Two men and six boys can cut a field in 3 hours. If the men work at 3/2 times that of the boys, how many men are required to cut
1. 5 answers
2. 1,454 views
a final examination score in General maths is weighted four times as much as each test score If the student has a final exam
1. 3 answers
2. 861 views
10 red, 10 blue, 10 green matches are used to build a regular icosahedron, how many possible solutions are there?
1. 2 answers
2. 474 views
For the 6 faces and 8 vertices of a regular hexahedron, respectively sealed with red and blue these 2 beads (each face contains
1. 0 answers
2. 470 views
There are 4 kinds of colored beads( r, g, b, y) to seal onto the 6 vertices of a regular hexagon, how many solutions are there?
1. 0 answers
2. 374 views
Use 3 types of colored beads to seal onto the vertices of a regular pentagon, how many possible solutions are there? Hint: The
1. 0 answers
2. 402 views
Paint the 4 faces of a regular tetrahedron by using 3 types of colors, how many possible solutions are there?
1. 0 answers
2. 376 views
We have two kind of tiles : 1 x 1 and 2 x 2, and use them to cover the 8 x 3 road without overlapping, how many different ways
1. 1 answer
2. 448 views
Suppose a manufacturer produces the football as shown below, they want to print one 2014 football World Cup logo and one
1. 1 answer
2. 570 views
The graph of a second-order polynomial is shown below, and the intercepts with the axes are marked. Explain how you can use the
1. 1 answer
2. 1,114 views
The plane P1 has equation r = (2,1,1)+lambda(-2,1,8)+mu(1,-3,-9)The plane P2 has equation r = (2,0,1)+s(1,2,1)+t(1,1,1) Show
1. 1 answer
2. 641 views
A two-tailed test is conducted at the 0.10 significance level. What is the P-value required to reject the null hypothesis?A.
1. 0 answers
2. 828 views
T varies inversely as R and T =3.5 when R =10
1. 1 answer
2. 423 views
Show how you would solve by Substitution:2x + y = 0 x – 3y = -7 Show how you would solve by Elimination: 3x + 4y = 1 5x – 3y
1. 1 answer
2. 464 views
Which statement is true regarding nuclear energy
1. 1 answer
2. 421 views
Brenda takes out a twenty year loan of R400,000..she repays the loan by means of equal montly payments starting one month after
1. 1 answer
2. 691 views
write an equation of a circle with the given center and radius. center (–7 –3) and radius 13
1. 1 answer
2. 524 views
A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times
1. 2 answers
2. 813 views
A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times
1. 2 answers
2. 677 views
A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times
1. 0 answers
2. 593 views
A number of circles touch each ather. The area of the smallest circle is 4n cm^2 and each consecutive circle has area 9/4 times
1. 0 answers
2. 605 views
If 3•5/9 and 40•1/2 are the 1st and last term of geometric sequence. Determine the value of fifth term if there are seven
1. 1 answer
2. 437 views
Three terms of geometric sequence: T1,T2 and T3.If T2=T1+4 and T3=T2+9 determine the values of T1,T2 and T3.
1. 2 answers
2. 956 views
1/tan60';sin90',tan60';...form a sequence. Calculate the fourth term.
1. 3 answers
2. 673 views
limit of x approaches -3. (2x^2 + 4x + 1)
1. 0 answers
2. 331 views
what are the factors of p^2 + 11p - 42 ?Thank You.
1. 1 answer
2. 395 views
Which of the following statements is CORRECT regarding deciding whether an alcohol sale is legal?A. IF a person looks over 21,
1. 6 answers
2. 15,904 views
A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound?
1. 3 answers
2. 568 views
Which choice best describes the underlined words in the sentence?Look at the stars and planets on a clear night. (Points : 3)
1. 3 answers
2. 696 views
Tom wants to run 2 1/2 miles on a 2/3mile track how many laps does tom run. I had add 2/3+2/3= 4/3 adding it up to get a 2 1/2
1. 1 answer
2. 435 views
A band played 3 concerts and earned a total of $321.00. The band earned about the same amount for each concert. Estimate how
1. 4 answers
2. 1,041 views
a living room measure 450 x 330cm. find the dimension of the largest square tile that can be used to tile the floor without
1. 2 answers
2. 1,615 views
use the z score table to find the floolwing:a) p(1.2<z<2.4) b) p(z>1.675) please show working out
1. 1 answer
2. 442 views
us e the formula z=x-u/SD to determine the z score for a score of 34.5 a normal distribution if the mean is 46.5 and the
1. 1 answer
2. 508 views
Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55.
1. 3 answers
2. 760 views
You live under a bridge that goes over a river. the underneath side of the bridge is an arc that can be modeled with the
1. 1 answer
2. 838 views
A sprinter set a high school record in track and field, running 200.0 m in 21.0s . What is the average speed of the sprinter in
1. 2 answers
2. 1,807 views
•The x-intercepts of the graph of y=f(x)•The real zeros of the function f •The real solutions to the equation f(x)=0 Use
1. 1 answer
2. 887 views
Give a piece-wise function p(x) where p(2)=5 and p(-1)=3
1. 9 answers
2. 443 views
As compared to its first year of operation, ABC Company grew 8% in the second year and an additional 2% per year for the next
1. 0 answers
2. 644 views
A mastaba is:
1. 2 answers
2. 475 views
The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal
1. 2 answers
2. 1,562 views
The coefficient of expansion of a certain steel is 0.000012 per C^(degree) . The coefficient of volume expansion, in
1. 4 answers
2. 6,325 views
Find all zeros of the polynomialP(x)=x^3 - 2 x^2 - 9 x - 30.
1. 1 answer
2. 370 views
In comprison with John Kennedy, Lyndon Johnson wasA. better educated B. more skillful at working the congress C. a better public
1. 2 answers
2. 780 views
Which one of the following statements about intelligence is the most accurate a. Iq is a valid measurement, and environmental
1. 1 answer
2. 1,756 views
What inequality represents the sentence below?The product of a number and 5 is no more than 8. A. 5n < 8 B. 5n > 8 C. 5n>8
1. 4 answers
2. 663 views
Kristen lives directly east of the park. The football field is directly south of the park. The library sits on the line formed
1. 1 answer
2. 2,818 views
What is the maximum heart rate for a 35-year-old?A. 121.1 B. 183.5 C. 187 D. 205.55
1. 2 answers
2. 571 views
Grover Cleveland is to fathering a child out of wedlock as James G. Blaine is to:Questionable loyalty to his country Drug
1. 1 answer
2. 1,054 views
You have many skills, a broad variety of work experiences and a college degree. Do you favor the Pendleton Act?Only in the
1. 2 answers
2. 750 views
Complete the following progression: AGRARIAN DISCONTENT; the GRANGE ASSOCIATION; FARMERS’ ALLIANCES;The Populist Party
1. 1 answer
2. 992 views
Command economies:A. Are considered a type of mixed economy B. Are considered a type of free market economy C. Oppose private
1. 1 answer
2. 649 views
A disk with a rotational inertia of 2.0 kg.m^2 and a radius of 0.40 m rotates on a frictionless fixed axis perpendicular to the
1. 2 answers
2. 2,443 views
One mole of pentanol (C5H11OH) contains how many hydrogen (H) atoms?
1. 1 answer
2. 1,642 views
Given the following reaction:CaC2 + 2 H2O C2H2 + Ca(OH)2 How many moles of Ca(OH)2 will be produced if 5.800 g of CaC2 are
1. 0 answers
2. 603 views
A wheel starts from rest and has an angular acceleration of 4.0 rad/s^(2). When it has made 10 rev its angular velocity is:
1. 4 answers
2. 5,683 views
By the end of April 1975, which city fell to the North Vietnamese Army, leading to the unification of Vietnam?
1. 1 answer
2. 573 views
If the consumption function is C = $200 billion + 0.6Y,(a) How much do consumers spend with incomes of $8.25 trillion? I got 5.2
1. 1 answer
2. 1,717 views
Suppose you borrow $1,000 of principal that must be repaid at the end of two years, along with interest of 5 percent a year. If
1. 2 answers
2. 2,949 views
B(0,5)F(0,3) G(30,3) C(30,5) Find the area, Area BFGC =
1. 2 answers
2. 538 views
Finding Partial Derivatives Implicitly.Find dz/dx and dz/dy for 3x^(2)z-x^(2)y^(2)+2z^(3)+3yz-5=0 How would you type this in
1. 1 answer
2. 1,688 views
Write one Microsoft excel formula that works for conditions below on cell C1 for any number:a) IF A1+B1<=4, return $20 b) IF
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2. 588 views
An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s^2 west for 3 seconds. During this
1. 2 answers
2. 4,543 views
Find Curvature, find the curvature k of the curve, where s is the arc length parameter.r(s)=(3+s)i+j
1. 1 answer
2. 1,006 views
Find the Principal unit normal vector to the curve at the specified value of the parameter.r(t)=ti+t^(2)j+lntk, t=1
1. 1 answer
2. 1,662 views
Find the unit tangent vector T(t) and find a set of parametric equations for the line tangent to the space curve at point P.r(t)
1. 5 answers
2. 1,710 views
Find the angle between two vectors. In radians and in degrees.u=<1,0,-3>, v=<2,-2,1> I got radians = 1.676 degrees = 96
1. 1 answer
2. 552 views
4+5 times 6/2
1. 3 answers
2. 400 views
African American troops in the Union army:A.were from the begining an itergral part of mnay fighting units. B.distinguished
1. 3 answers
2. 982 views
ALL the following accurately characterize the advantages of the North and South EXCEPT:a. The Union had far greater industrial
1. 2 answers
2. 790 views
The first major battle of the civil war took place atVicksburg Manassas Antietam Shenandoah I chose Antietam. Right
1. 3 answers
2. 692 views
Suzie (of mass 58 kg) is roller-blading downthe sidewalk going 36 miles per hour. She notices a group of workers down the
1. 1 answer
2. 918 views
Suzie (of mass 58 kg) is roller-blading downthe sidewalk going 36 miles per hour. She notices a group of workers down the
1. 1 answer
2. 723 views

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