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Kris

Questions (163)

An aeroplane is flying horizontally at 80m in still air.if the aviator wishes to flydue South and the wind blowing the south
1. 1 answer
2. 135 views
Draw a plan of a room 90m2 using a scale 1cm :3m
1. 0 answers
2. 79 views
If the exterior angle of the vertex is 110, then the measure of the angle of each base is ___ and the measure of the vertex
1. 1 answer
2. 202 views
Let us throw a particle of mass m from the north pole with a velocity v_0 forming an angle α with the surface of the earth.
1. 0 answers
2. 341 views
Fine The radius of 17my of a circle
1. 1 answer
2. 162 views
At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 24
1. 1 answer
2. 4,172 views
A hospital patient is hypertensive, with a blood pressure of 160/99. Which symptom below would be a likely side effect of this
1. 0 answers
2. 243 views
The population of algae cells in a sample is growing exponentially by 9% each hour. Theinitial population is 8000. Use the
1. 1 answer
2. 252 views
Describe the civil war in Syria and Yemen. How are they similar? How are they different?
1. 15 answers
2. 3,646 views
Suppose that f(x)=x−7x^[1/7](A) Find all critical values of f. (B) Use interval notation to indicate where f(x) is increasing
1. 1 answer
2. 2,140 views
Suppose that f(x)=x^[1/3](x+3)^[2/3](A) Find all critical values of f. If there are no critical values, enter None . If there
1. 2 answers
2. 2,414 views
Elastic behavior: when loads are small how much deformation occurs? What materials deform least?
1. 1 answer
2. 1,139 views
The only way to get to Ship Island is to take a boat, which is free for 2 and under, $17 for children 3 to 10 years old, $25 for
1. 1 answer
2. 425 views
In a friendly neighborhood squirt gun contest a participant runs at 7.8 m/s horizontally off the back deck and fires her squirt
1. 3 answers
2. 2,739 views
A computer is purchased at 2000$. After each year, the resale value decreases by 25%. What will the resale value be after 3
1. 1 answer
2. 589 views
(3-4yi)(6+7i)-[(2-3yi)-3(1+7i)]Express it in a+bi form I got 19+42i-21yi+28y but I do not know how to express it in a+bi form,
1. 1 answer
2. 473 views
What mass of water is produced from 10g of sulfuric acid ?
1. 1 answer
2. 645 views
A bus travels 400 Miles in 8 hours how many miles will the bus travel in 2 days
1. 1 answer
2. 695 views
A bus travels 400 Miles in 8 hours how many miles will the bus travel in 2 days
1. 1 answer
2. 756 views
A bus travels 400 Miles in 8 hours how many miles will the bus travel in 2 days
1. 2 answers
2. 3,456 views
Can you check to see if I'm correct?Which of these substances are elements? a. silicone b. quartz c. iodine d. water e. silicon
1. 2 answers
2. 4,113 views
Hi! I am having some trouble with this question, can you please help me?Which of the following describe chemical properties?
1. 1 answer
2. 1,245 views
Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25%
1. 2 answers
2. 1,859 views
Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25%
1. 0 answers
2. 966 views
Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25%
1. 1 answer
2. 1,287 views
Calculate the concentration of all species in a 0.145M solution of H2CO3
1. 1 answer
2. 1,118 views
Oil and water don't mix. We say that oil is
1. 2 answers
2. 508 views
Name three properties of metal for which metallic bonds are responsible
1. 1 answer
2. 426 views
Find the indefinite integral.∫xe^-4xdx
1. 1 answer
2. 610 views
A sample of steam with a mass of 0.530g and at a temperature of 100 ∘C condenses into an insulated container holding 4.40g of
1. 0 answers
2. 915 views
A helicopter flies south at 185km/hr relative to the ground. The wind is blowing 60km/hr to the west compared to the ground.
1. 1 answer
2. 567 views
Ken planted 8 flowers and 4 shrubs in his mother's garden. He ran out of fertilizer before he planted 2 of the flowers and 1 of
1. 3 answers
2. 765 views
A student fires a rocket at 24 degrees above the horizontal. The 10kg rocket comes out of the gun barrel at 1000 m/s, and
1. 1 answer
2. 411 views
1.Using Nerst, find the E of the cell for the dicromate redox system:A.under standard conditions. B.under neutral solutions
1. 0 answers
2. 461 views
1.Using Nerst, find the E of the cell for the dicromate redox system:A.under standard conditions. B.under neutral solutions
1. 1 answer
2. 445 views
How many packs of DVDs can you buy with 198 dollars if one pack costs 18 dollars
1. 2 answers
2. 781 views
Hydrolysis of a compound A, C7H6cl2 was carried out by refluxing with excess potassium hydroxide solution. the resulting
1. 1 answer
2. 1,201 views
This isosceles triangle has two sides of equal length, a, that are longer than the length of the base, b. The perimeter of the
1. 19 answers
2. 12,250 views
3 3/5 * 5/6 = 90/45Do I have correct answer?
1. 1 answer
2. 338 views
Multiply. Write each product in simplest form.1. 2 3/8 * 1 3/5 = 3 4/5 2. 1 5/6 * 2/3 = 11/10 3. 7/8 * 3 1/3 = 35/27 Do I have
1. 2 answers
2. 941 views
What is the sum of all the positive numbers smaller than 100,000 where all digits can only be 1 or 0.
1. 0 answers
2. 373 views
How many grams of glycolic acid are needed to react with 30 mL of 0.1 M NaOH?
1. 1 answer
2. 890 views
is 100 over 1000 10%?
1. 3 answers
2. 352 views
Justin is 10 years less than half his father's age. If Justin is 12 years old, how old is his father?
1. 1 answer
2. 1,064 views
Solve it step by step so I can't do the rest.lim x->-infinity (ax^2+b)/(cx+d) Thank you! Answer th
1. 1 answer
2. 414 views
Solve it step by step so I can't do the rest.lim x->-infinity (ax^2+b)/(cx+d) Thank you!
1. 0 answers
2. 348 views
Use a table of t-values to estimate the P-value for the specified one-mean t-test. Left-tailed test, n=12, t= -3.412. a=p<0.005.
1. 0 answers
2. 787 views
A rocket fired straight up is tracked by an observer on the ground a mile away.a)Show that when the angle of elevation is theta,
1. 1 answer
2. 2,284 views
What is the number of different squares which can be inscribed in a given equilateral triangle?
1. 1 answer
2. 793 views
(cos πx + sin πy)4 = 54; Implicit Differentation
1. 3 answers
2. 749 views
Casper bought some pencils at $.50 each. He had $3 left after the purchase. If he wanted to buy the same number of note pads at
1. 1 answer
2. 1,609 views
How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
1. 1 answer
2. 382 views
How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
1. 0 answers
2. 319 views
How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
1. 0 answers
2. 334 views
How man moles of sodium phosphate are there in 0.4 liters of 0.1M Na2HPO4 (MW=141.96 g/mol)?2.) How many millimoles in 200 ml?
1. 2 answers
2. 449 views
I am confused, selenium Se, is on the periodic table, but does it combine with other elements on the periodic table? I want to
1. 0 answers
2. 479 views
BaO2(s) + 2 HCl(aq) H2O2(aq) + BaCl2(aq)What amount of hydrogen peroxide should result when 1.00 g of barium peroxide is treated
1. 1 answer
2. 677 views
Bacterial digestion is an economical method of sewage treatment.5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow Bacteria C5H7O2N(s) +
1. 0 answers
2. 752 views
Nitric acid is produced commercially by the Ostwald process, represented by the following equations.4 NH3(g) + 5 O2(g) 4 NO(g) +
1. 0 answers
2. 972 views
Commercial brass, an alloy of Zn and Cu, reacts with hydrochloric acid as follows.Zn(s) + 2 HCl(aq) ZnCl2(aq) + H2(g) (Cu does
1. 8 answers
2. 2,622 views
Consider the following unbalanced reaction.P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the
1. 11 answers
2. 938 views
Consider the following unbalanced reaction.P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the
1. 1 answer
2. 712 views
What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each
1. 1 answer
2. 404 views
What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each
1. 1 answer
2. 631 views
You have a chemical sealed in a glass container filled with air. The glass container has a mass of 200.0 grams and the chemical
1. 1 answer
2. 1,060 views
Q1: If K=In a -In b +In c -t/bc,show that K=(ac/b)e^(-t/bc).Q2:Express log(8)5 in terms of m ,where m=lg 2 Q3:Given that log
1. 1 answer
2. 480 views
express y=0.1(1000)^x in the form lg y =mx+c ,where m and c are constants ,and x is a function of x . Determine the constants m
1. 1 answer
2. 451 views
evaluate without using a calculator[log(5)4 x log(2)10 ]/ [log(25)√10]
1. 1 answer
2. 1,619 views
List in increasing order of expected Rf values in a TLC experiment: salicylic acid, toluene, and benzophenone.
1. 0 answers
2. 575 views
1.)The silica that makes up the stationary phase in TLC chromatophraphy is more polar than the mobile phase. What then might the
1. 1 answer
2. 1,239 views
A right circular cone has a constant slant height of 12 feet. Find the radius of the base for which the cone has maximum value
1. 0 answers
2. 540 views
On a map John is standing at (11,11). His friend Lucy is standing at (1,11). John took 10 steps to the right. Is he standing
1. 3 answers
2. 589 views
2 questions I need some help with please!1. Find the partial sum S5. an= -2n+16 2.Solve the system by triangularizing the
1. 0 answers
2. 409 views
I need some help!Determine whether infinite geometric series has a finite sum. If so, find the limiting value. 112+56+28+....
1. 0 answers
2. 383 views
I need some help!Determine whether infinite geometric series has a finite sum. If so, find the limiting value. 112+56+28+....
1. 1 answer
2. 462 views
In I Am Nujood, The urban elites Nujood encounters in the courtroom and at the Yemen Times lead very different lives from those
1. 1 answer
2. 403 views
In I Am Nujood, what enables Shada to take up Nujood’s cause so quickly and effectively? How does Shada, whom Nujood calls her
1. 1 answer
2. 1,073 views
In I Am Nujood, Nujood says that when her family was driven from Khardji, they lost “a small corner of paradise.” How do the
1. 0 answers
2. 417 views
I need some help.A biologist finds that the population of a certian type of bacteria double seach half-hour. An initial culture
1. 1 answer
2. 590 views
I need some help as I'm totally lost! I need to find the first five terms of each recursive sequence.The n-1 on the problem
1. 1 answer
2. 495 views
I need help with these! I got B for 1. C for 2. and D for 3. Thanks for the help!1.) Find the values of a, b, and c that will
1. 1 answer
2. 409 views
1.) Find the values of a, b, and c that will make the statement true.[5 a -2] [5 102] [3 4 –b] = [-3 -4 3] [2c 5 9] [-2 5 9]
1. 0 answers
2. 925 views
I have a few questions I need help with! Please explain if my answer was not right how you got to it. I got 1.) B 2.) A 3.) C1.
1. 1 answer
2. 953 views
I have a few questions I need help with!1. Solve the system by triangularizing the augmented matrix and using back substitution.
1. 0 answers
2. 562 views
Hello,This is the last of questions I have for my practice assignment. Again I will put what I got. Thanks for your help. 1.)
1. 1 answer
2. 790 views
Hello,I have some practice math I'm working through and I'm unsure about the answer. I will also put what I got. Thanks for the
1. 1 answer
2. 1,187 views
Describe how proteins are manufactured in the ribosomes (include discussion of codons and anti-codons).
1. 0 answers
2. 385 views
the difference between 3 times a number and 11 is 10
1. 1 answer
2. 914 views
The table shows men's shoe sizes in the United States and the corresponding European shoe sizes. Let y = f(x)represent the
1. 1 answer
2. 2,811 views
Bonnie and Clyde are sliding 500 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde
1. 2 answers
2. 3,305 views
Bonnie and Clyde are sliding 500 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde
1. 1 answer
2. 638 views
A speed skater moving across frictionless ice at 9.0 hits a 6.0 -wide patch of rough ice. She slows steadily, then continues on
1. 1 answer
2. 825 views
How would you prepare 500.0 of an aqueous solution of glycerol with a vapor pressure of 24.8mm Hg at 26 degree Celsius (vapor
1. 1 answer
2. 724 views
I have the differential equation dP/dt = 0.5(800-P) and I need to get the population equation P(t). Can someone walk me through
1. 1 answer
2. 377 views
I'm trying to find the second derivative of h(x)= x^2 + cos(kx)My answer for h'(x) is 2x - ksin(kx) but I'm not sure if that's
1. 1 answer
2. 402 views
ABCD is a parallelogram. If AB is equal to 2x + 1 and CD is equal to x + 13, find x.
1. 0 answers
2. 426 views
Solve the equation symbolicallyx+7/8=x+8/9
1. 1 answer
2. 364 views
The initial amount is 1 million.Divide it by 4. Divide the result by 5. Divide the result by 2. Divide the result by 20.
1. 1 answer
2. 925 views
So I have a particle that is moving along the x-axis. I have the acceleration equation, the velocity equation, and the position
1. 0 answers
2. 486 views
I have an acceleration function and a velocity function that I know the equations for. How would I use those to find the
1. 2 answers
2. 1,125 views

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