Ask a New Question

Questions and answers by

Autumn

Questions (106)

solve the following set of equations by using substitution or elimination 2x+y=1 2x+3y=-41
1. 1 answer
2. 122 views
Find the limit of f(x) as x approaches 0.f(x) = [1-cos^2(3x)] / x^2 Is there a way to do this if we haven't learned L'Hopital's
1. 1 answer
2. 344 views
Which of the following is a Pythagorean Triple and would be the sides of a right triangle?A 3 , 5 , 8 B 5 , 12 , 24 C 12 , 16 ,
1. 2 answers
2. 316 views
Calculate the value of Kp at 227oC for the equilibrium: 3 A(g) ⇌ B(g) + D(g)Kc = 5.15
1. 1 answer
2. 571 views
For the equilibrium:CO(g) + 2 H2(g) ⇌ CH3OH(g) Calculate the value of Kp given these equilibrium partial pressures: carbon
1. 1 answer
2. 520 views
-24 • 5=?-100 -120 120 90 Idk what it is Lesson 5: Multiplication of Integers Math 6 B Unit 3: Integers please help!!
1. 7 answers
2. 1,399 views
What discovery did the study of fossil horse teeth lead scientists to make?a : Early horses had a specialized diet of grass, a
1. 15 answers
2. 3,792 views
Why are phylogenetic trees important in understanding evolutionary relationships among organisms?
1. 0 answers
2. 9,880 views
What is the average of 125 and 33
1. 1 answer
2. 220 views
Which of the following is/are rational number(s)? (choose all that apply)21 the square root of 5 4/5 pi
1. 1 answer
2. 319 views
which of the following is/are rational number(s)? 21, the square root of 5, 4/5, pi
1. 2 answers
2. 347 views
A model rocket with mass 1 kg is launched from the ground, starting from rest, and accelerates vertically due to an upward
1. 4 answers
2. 868 views
How many pounds of potting soil, which costs $0.04 per pound, should be mixed with 20 pounds of nutrient-rich soil, priced at
1. 1 answer
2. 639 views
Use your knowledge of the law of conservation of mass to answer the following question: In the lab, a student reacts lithium
1. 2 answers
2. 704 views
Ms. Sue's last words on this website were on December 7th to another student. She said, "Your Question?" Now, this might not
1. 50 answers
2. 5,593 views
Which of the following statements is true?A) Chemical reaction rates vary with the conditions of the change, but nuclear decay
1. 3 answers
2. 1,615 views
Together Paul and Jack earned $72 washing cars. Jack washed twice as many cars as Paul. If Paul washed 3 cars, how much did they
1. 2 answers
2. 519 views
Find the value of x1.92 = (0.015)^x / (0.0075)^x Thanks in advance!
1. 1 answer
2. 482 views
How did the South Texas elite interact with the Anglo settlers?A) Anglo settlers worked for South Texas Elite B) Anglos worked
1. 1 answer
2. 615 views
The Declaration of Independence stated that the colonists rights came from whom?
1. 1 answer
2. 671 views
Identify the substance liberated at each electrode during the electrolysis of AgNO3 with inert electrodes.I know that Ag is
1. 1 answer
2. 1,475 views
Solve: ((2^x)-7)^2 = 1The answer should be x = 2.58 (3 s.f.) or x = 3 but I have no idea how to get there. Thanks in advance!
1. 1 answer
2. 1,345 views
The following table shows how the initial rate of this reaction depends on the concentrations of the two reactants[NO] [O2]
1. 6 answers
2. 1,114 views
Prove the identity cos3x ≡ 4cos^3x - 3cosxThank you so much for the help!
1. 1 answer
2. 537 views
Reposting again since my previous question may seem like it's been answered. If I shouldn't do this just let me know :)The
1. 1 answer
2. 548 views
The probability that an event A occurs is P(A) = 0.3 . The event B is independent of A and P(B) = 0.4 .a) Calculate P(A or B or
1. 2 answers
2. 3,660 views
What mass of solid potassium sulfate, K2SO4, is used to make up exactly 100.0cm^3 of 0.100 mol/dm^3 SO4^2-?This should be a very
1. 1 answer
2. 763 views
How do I go about proving that:cos(4θ) + 4cos(2θ) ≡ 8cos^4(θ) - 3 Thanks in advance!
1. 1 answer
2. 3,562 views
If x^4 - y^4 = -15 and x^2 - y^2 = -3, what is the value of x^2 + y^2?
1. 1 answer
2. 462 views
A pretty confusing question with weird wording:If the concentration of a compound is 10mg/ml, and its molecular weight is
1. 2 answers
2. 653 views
The chart below shows the population distribution for the 2,400 occupants of the city of Centre Hill.Adult Male Adult Female
1. 2 answers
2. 1,307 views
If 8x + 8y = 18 and x^2 – y^2 = –3/8, what is the value of 2x – 2y?The answer is supposed to be -1/3 but I have no idea
1. 2 answers
2. 2,337 views
Pretty confusing AS Biology question:A scientist carried out an experiment to separate the organelles in an animal cell by mass.
1. 3 answers
2. 4,124 views
Ethanoic acid can be reacted with alcohols to form esters, an equilibrium mixture being formed.CH3CO2H + ROH <--> CH3CO2R + H2O
1. 1 answer
2. 3,962 views
The first three terms of an arithmetic progression are 2x, x+4 and 2x+7 respectively. Find the value of x.I have no idea where
1. 2 answers
2. 4,120 views
Which reaction would occur more readily? Why?1) Mg + Cl2 --> MgCl2 2) 2Mg + O2 --> MgO Thanks!
1. 1 answer
2. 527 views
How would you solve this?1/2 mv^2 - 1/2 m x 25 = mg x 100sin20 I obtained this from the question: A girl on a sledge starts,
1. 4 answers
2. 702 views
A car of mass 0.9 tonnes is driven 200 m up a slope inclined at 5° to the horizontal. There is a resistance force of 100 N.(i)
1. 1 answer
2. 1,198 views
Relative to an origin O, the position vectors of points A and B are given byOA = 3pi + 4j + p^2k, and OB = -pi + -1j + p^2k Find
1. 3 answers
2. 1,963 views
A block of mass 11 kg is at rest on a rough plane inclined at 30° to the horizontal. A force acts on the block in a direction
1. 1 answer
2. 2,913 views
Sulfur dioxide reacts with oxygen to form sulfur trioxide according to the equation2SO2(g) + O2(g) <-> 2SO3(g) Samples of sulfur
1. 4 answers
2. 3,993 views
When one mole of ammonia is heated to a given temperature, 50% of the compound dissociates and the following equilibrium is
1. 1 answer
2. 3,540 views
If x - y = 9, find the maximum value of xy^2Never seen this type of question before, any help? Thanks!
1. 1 answer
2. 478 views
How would you differentiate this equation?1/6(2x-3)^3 -4x Here's my working u = 2x-3 y = 1/6u^3 dy/du = 1/2u^2 du/dx = 2 dy/dx =
1. 1 answer
2. 346 views
Convert 3.16x10^3 in standard form
1. 3 answers
2. 1,689 views
Back again with another problem :)How do you calculate the enthalpy change, in kJ/mol for the reaction of copper(II) sulfate?
1. 1 answer
2. 1,371 views
Back with another question similar to the one I asked before, but this one's a bit more confusing4NH3 (g) + 5O2(g) → 4NO(g) +
1. 1 answer
2. 748 views
Use the information below to answer this questionC(s) + O2(g) -> CO2(g) ΔH = -394 kJ/mol H2(g) + 1/2 O2(g) -> H2O(l) ΔH = -286
1. 5 answers
2. 3,031 views
Solve the equation 2cos2x = √3 for 0°≤x≤360°I did this: cos2x = √3 /2 2x=30 x=15 x=15, 165, 195, 345 Is this correct?
1. 1 answer
2. 1,841 views
6sin(2x)+3=0How do you find the smallest value of x in the interval 0≤x≤π for which y=0? My work so far: 6sin(2x)=-3
1. 1 answer
2. 1,124 views
How would you write an ionic equation for: NH2SO3H + NaOH —> NaNH2SO3 + H2O?Is it simply H+ + OH- —> H2O?
1. 2 answers
2. 1,157 views
Is 107 X 10^4 A Scientific Notation
1. 2 answers
2. 441 views
A moving company charges $0.60 per pound for a move from New York to Florida. A family estimates that their belongings weigh
1. 4 answers
2. 3,490 views
Anais bought 4.5 yards of ribbon. She had 3 feet 8 inches of ribbon left after trimming some curtains. How many inches of ribbon
1. 1 answer
2. 1,453 views
Sean has $75 to spend on CDs. If each CD costs $6.98, about how many CDs can he buy?
1. 1 answer
2. 1,711 views
Many people believe that the Civil War is considered to be the worst war in American history. What is the basis for this belief
1. 1 answer
2. 846 views
What were the details of the Great Compromise?
1. 1 answer
2. 630 views
What is Oxytocin? Is this positive or negative feedback?
1. 1 answer
2. 551 views
What does the term "homeostasis" mean? What is one of the mechanisms used by our bodies to maintain homeostasis?
1. 1 answer
2. 766 views
An ice cream shop has 19 flavors. You also have the choice of a sugar cone, waffle cone or cup. If a person orders two scoops of
1. 2 answers
2. 2,240 views
Which of the following tools can bd used to measure mass?A) a graduated cylinder B) a triple beam balance C) a mercury
1. 6 answers
2. 2,265 views
1. One angle of a rhombus measures 60 degrees. If the perimeter ois 20 inches, find the length of both diagonals.2. An
1. 0 answers
2. 604 views
How do you write 200 7/100 as a decimal?!?
1. 2 answers
2. 449 views
Find the radius of a cone with a height of 14 cm and a volume of 718.4 〖cm〗^3, use 3.14 for X and remember to show all work
1. 1 answer
2. 522 views
When its brakes are applied, a car moving at 10 m/s undergoes an acceleration of -1.2 m/s2. How far does the car travel before
1. 0 answers
2. 810 views
While playing lawn darts with his friend, Jack notices that when he throws a dart up at 60 degrees it travels 11 meters. How
1. 1 answer
2. 784 views
Simplify. Write the answer using positive exponents only. (x^-5y^-6/a^-5)^-3
1. 1 answer
2. 766 views
There was a sidewalk sale at Mega Mall. Everything was marked down by30%. Rodrick bought 3 pairs of jeans originally priced at
1. 1 answer
2. 767 views
The altitude of a plane as it begins to descend is shown by the linear equationa = 22,000 – 800m, where a is the plane’s
1. 2 answers
2. 891 views
Sam downloaded four applications for $2.99 each to her cell phone. The remaining applications that Sam purchased cost $1.99
1. 1 answer
2. 589 views
6d-3d+2d=35
1. 1 answer
2. 246 views
Melissa collected three kinds of autumn leaves when she was out walking today -elm, maple, and oak. She has 2 times as many
1. 1 answer
2. 562 views
Melissa collected three kinds of autumn leaves when she was out walking today -elm, maple, and oak. She has 2 times as many
1. 1 answer
2. 634 views
The digit in the hundreds place is a square number, and it is odd.The digit in the tens place is 1 more than the square root of
1. 1 answer
2. 1,012 views
14. Why is “The Divine Comedy” an allegory?Everyone dies in the end. The theme is ambiguous. All of the characters and
1. 3 answers
2. 1,501 views
Talking about significant figures, my Physics textbook lists 5 rules for determining significant figures. 1) All nonzero digits
1. 0 answers
2. 711 views
The pH of vinegar is 2.40. Calculate the concentration of hydronium ions and hyrdroxide ions in vinegar.
1. 1 answer
2. 448 views
The pH of vinegar is 2.40. Calculate the concentration of hydronium ions and hyrdroxide ions in vinegar.
1. 1 answer
2. 435 views
How to round 63 for homework
1. 1 answer
2. 896 views
In 1920, the record for a race was 46.9 seconds. In 1940 it was 46.5 seconds. Let R(t)= the record in the race and t= the number
1. 0 answers
2. 504 views
A hummingbird has a mass of about 1.7 g. Suppose a hummingbird does 0.15 J of work against gravity, so that it ascends straight
1. 4 answers
2. 5,016 views
How did scientific discoveries change people's attitudes towards natural events and religious faith?
1. 2 answers
2. 547 views
My question is what would be the constant in a basketball ofensive rebound experiment? My science q is do the amount of
1. 0 answers
2. 562 views
Hello, I need help with this question, What factors in today's culture hinder wives from pursuing the C-H-A-I-R-S approach to a
1. 1 answer
2. 590 views
If GDP increases by 5 percent in the same that the deficit is run, What happens to gross debt as a percentage of GDP? What
1. 0 answers
2. 674 views
How would I simplify the complex fraction:3/x^3/1/x^2 ? Thanks
1. 2 answers
2. 612 views
What are the two vegetation types of Ethiopian Highlands?
1. 1 answer
2. 297 views
During a baseball game, a batter hits a pop-up to a fielder 94 m away.The acceleration of grvity is 9.8 m/s^2. If the ball
1. 1 answer
2. 651 views
The fastest recorded pitch in the MLB was thrown by Nolan Ryan in 1974. If this pitch were thrown horizontally, the ball would
1. 2 answers
2. 1,141 views
Part 1:Janet jumps off a high diving platform with a horizontal velocity of 2.67 m/s and lands in the water 2.6 seconds later.
1. 0 answers
2. 682 views
Part 1:A ball is thrown horizontally from the top of a building 28.6 m high. The ball strikes the ground at a point 80.3 m from
1. 1 answer
2. 720 views
Did Islam become more less influential in West Africa from the 700s to the 1400s?
1. 1 answer
2. 1,091 views
a car travels 59.78 miles east in 89.67 minutes, then 89.67 miles north in 59.78 minutes, and then 29.89 miles at 59.78 degrees
1. 2 answers
2. 595 views
a car travels 59.78 miles east in 89.67 minutes, then 89.67 miles north in 59.78 minutes, and then 29.89 miles at 59.78 degrees
1. 1 answer
2. 713 views
Brenda starts a merchanding business on December 1 and enters into three invfentory purchases:December 7 10 units @&6 cost
1. 0 answers
2. 649 views
For parts (a)–(c) use the following equation: y = 2/(x + 6).(a) Find the ordered pair that represents a solution to the
1. 2 answers
2. 591 views
For parts (a)–(c) use the following equation: y = 2/(x + 6).(a) Find the ordered pair that represents a solution to the
1. 1 answer
2. 456 views
Write each equation in standard form (set equal to zero). Then solve by factoring.Example: x²-2x=8
1. 1 answer
2. 1,342 views
One newspaper reported that the mayor received a salary increase of 5%. Another paper reported that the mayor's salary went up
1. 4 answers
2. 682 views
Describe the delegates who attended the Constitutional Convention.
1. 3 answers
2. 1,142 views

Pages

1
2

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025