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Posts by monica

Total # Posts: 638

Calculus/Optimisation
A skateboarded decides to jump off a ramp. The path of the jump from the ramp can be approximated by: h = -3t^2 + 6t + 1 Where h is the height above the ground in meters, s is the horizontal displacement and t is the time after leaving the ramp in seconds. Find the maximum ...

Calculus/Optimisation
Yes the question is typed correctly but thank you!

Calculus/Optimisation
A real estate manages 80 apartment units. When the rent of each unit is $180 per month, all units are occupied. However, for each $6 increase in rent, one of the units becomes vacant. Each occupied unit requires an average of $18 per month for service and repairs. What rent ...

Algebra
given two consecutive integers. The sum of three times the first integer and four times the second integer is 95. Find the integers

College Algebra
given two consecutive integers. The sum of three times the first integer and four times the second integer is 95. Find the integers

chemistry
fu

chemistry
How much energy is required to increase the temperature of 755 g of iron from 10 ?C to (40,679 J)?

Math-Geometry
Thank You, I will try to do well on my test tomorrow.

Math-Geometry
AB=3/4 BC=-4/3 CD=3/4 DA=-4/3 Paragraph Beginning-In Order to Prove that the rectangle ABCD is a quadrilateral, there must be four right angles. Middle-AB=3/4 BC=-4/3 CD=3/4 DA=-4/3 AB=CD BC=DA End-Since each of the two segments are an opposite reciprocal to each other, the ...

Please I have struggled and i am unable to find the answer
Please I have struggled and i am unable to find the answer

Math-Geometry
For coordinates A(1,-4) B(5,-1) C(8,-5) D(4,-8) Prove ABCD is a rectangle through the use of a coordinate paragraph.

math
Eight friends went to a hockey game. The price of the admission per person was $x. Four of the friends paid an extra $6 each for players guide book. Write and simplify an expression that represents the total cost.

Math
$11

Math
Alan wants to spend 1/5 of his money on a toy and 1/4 of it on a book. If he has $20, how much money will he have left over?

Chemistry
A calcium sample weighting 607.4 mg was precipitated as oxalate and calcined calcium carbonate giving 246.7 mg. What the percentage of calcium in the sample? Calcium molecular weight: 40.078 g/mol CaCO3 molecular weight: 100 g/mol

Chemistry
Thanks! =)

Chemistry
In the reaction of formation of sodium chloride (NaCl), 15 g of sodium is placed in contact with 20 g of chlorine. What is the reactant in excess and its mass in excess?

Math
How do you get $1.60 out of 23 coins that are only nickels and dimes

Chemistry
thanks!

Chemistry
If 0.250 L of aqueous solution with a density of 1.00 g/mL contains 13.7 g of pesticide, express the concentration of pesticide in (a) ppm and (b) ppb.

Chemistry
The density of an unknown gas is 1.23 g/L in 330K and temperature 25.5 pressure kPa. What is the molar mass of the substance?

Algebra 2
You and a friend take turns driving on a 450 mile trip. Your friend drives for 3.5 hours at an average speed of 60 miles per hours. What must your average speed be for the remainder of the trip if you want to reach your hotel in 4 more hours?

Chemistry
What substance is acting as the Brønsted-Lowry base in the forward reaction below? H2O + NH3 yields NH4+ + OH-

algebra
how to solve this problem using grouping symbols. 4^2 -5 x 2+1=1

math
DeWitt Company sells a kitchen set for $320. To promote July 4, DeWitt ran the following advertisement: Beginning each hour up to 4 hours we will mark down the kitchen set 8%. At the end of each hour, we will mark up the set 3%. Assume Ingrid Swenson buys the set 1 hour 30 ...

math
An Apple Computer Center sells computers for $1,192.80. Assuming the computers cost $10,080 per dozen. a. Find the dollar markup for each computer. (Round your answer to the nearest cent.) Dollar markup $ b. Find the percent markup on cost for each computer. Percent markup % ...

math
0.03%

Mathematics
A shop offered a special on socks and handkerchiefs for Father's Day. For k50 you could buy 7 pair of socks and 3 boxes of handkerchiefs or for K24 you could buy 3 pair of socks and 2 boxes of handkerchiefs. A. From a pair of simultaneous equations for the given ...

Math
The

Urgent =Math
Tell whether this survey describes a good sample and if so, name the method of sampling used. A phone company randomly calls 6 names from the phone book to find whether the person is satisfied with the phone service. yes, random yes, systematic***** yes, stratified not a good ...

Urgent =Math
17. Tell whether this survey describes a good sample and if so, name the method of sampling used. Every sixth person leaving a restaurant is surveyed to determine their favorite food from the menu. yes, random******** yes, systematic yes, stratified not a good sample 18.Tell ...

math
it would take the roach 23 seconds to scurry away

Stats
WOW, I worked on that for 25 minutes.. It took you only a few.. I'm just staring at these questions and painting nails... lol. Thank you so much ;)

Stats
The host of a dinner party purchases wine based on the weighted average of clarity (10%), bouquet (5%), friendliness to the palate (5%), storage ability of opened bottles (40%), and price (40%). Suppose that Bone Ranch Wave has scores in these categories of 4, 5, 3, 8, and 9, ...

Chemistry
3 x 10^23 molecules of element Z have a mass of 38 g. What is the mass of 1 mole?

Chemistry
Awesome ! thanks!@ Drbob

Chemistry
To neutralize 8.34 ml of HCl 36.5% by mass and density = 1, 2 g/cm3, the required volume of 5 mol/L NaOH will be?

Chemistry
To neutralize 8.3 4 ml of HCl 36.5% by mass and density = 1, 2 g/cm3, the required volume of 5 mol/L NaOH will be?

Pre-Calculus
suppose y is directly proportional to x. if y=6 when x=4, find the constant of proportionality and write the formula for y as function of x. Use your formula to find x when y=8.

Chemistry
Determine the mass, in grams, of water contained in 0.25 litres of aqueous solution that has 10% dissolved salt and density equal to 1.10 g/cm3

Anyone Help ASAP!!
I found out my mom is right it is B

Anyone Help ASAP!!
During the Civil War, all of the battles and most of the population of Florida were' A.) in the interior of the state B.) in the north of the state C.) in the south of the D.) on the coasts of the state Everyone in family disagrees. My mom says B. I say D. Sister says C. ...

Chemistry
Thanks :)

Chemistry
Knowing that the milk of magnesia contains 8 g% of Mg (OH)2, using 1 g of milk of magnesia and added 50 mL of 0.100 M HCl, determine the required volume of a solution of 0.105 M NaOH to titrate the excess HCl 0.100 M.

Chemistry
20 mL of a solution of HCl concentration, neutralized 0,50 g of Na2CO3. What is the Molarity of the acid solution?

Information Technology
Hope this helps: An executable virus is a non resident computer virus that stores itself in an executable file and infects other files each time the file is run. The majority of all computer viruses are spread when a file is executed or opened.

Urgent Plz Help?!?!?!?
Thank you @Ms.Sue is: 1.)D 3.)B 16.)C

Urgent Plz Help?!?!?!?
you asked me to post my answers and you would check them but you won't check them so much for helping me

@Reed plz check
I updated my answers

Urgent Plz Help?!?!?!?
1.) A 2.) B 3.) C 5.) A 6.) C 11.)B 13.)B 16.)C 18.)B Can you check these Reed sorry

Urgent Plz Help?!?!?!?
1. which factor contributed most to increase importance of literature in American culture during the 19th century? A.)the success of major social-reform movements B.)the spread of utopian communities throughout the nation C.)the migration of European intellectuals to the ...

History
2.The writings of Transcendentalists had the greatest influence on which of the following movements? A. Labor movement B. Women's movement C. Civil rights movement D. Counterculture movement I am stuck between 2 answers: B and C which is correct?

Review
Here is my answer that I have submitted: When I encounter a part of a lesson or math problem that makes me feel stuck or confused I just skip it and come back. I only have a limited time to complete everything so when I see a problem I can't figure out I skip it and come ...

Review
I just skip over it and ask for help but I don't want to put that because I don't know what she will think of that can you give me an example and I can explain it?

Review
When you encounter a part of a lesson or math problem that makes you feel stuck or confused, what do you do? How do you help yourself get unstuck and back on track?

Chemistry
The ions Cr3+ and O2- combine to form the ionic chromium oxide. in what proportions do these ions combine to produce a neutral compound?

Math
Help please. Find a number between 1/15 and 1/16.

Chemistry
Calculate the mass of NaCl required to cause dissolution of 0.010 moles of AgCl in 100 mL of solution. Consider that the addition of NaCl does not cause increased volume in the solution KSP (AgCl) = 1.0 x 10 ^ -10 KF (AgCl2) = 3.0 x 10 ^ 5 Answer This Question

Chemistry
Calculate the mass of NaCl required to cause dissolution of 0.010 moles of AgCl in 100 mL of solution. Consider that the addition of NaCl does not cause increased volume in the solution KSP (AgCl) = 1.0 x 10 ^ -10 KF (AgCl2) = 3.0 x 10 ^ 5

english help please!!
It is D!!!!!!

Chemistry
How many grams of nitrogen are present in 2 moles of HNO3?

Algebra
Ms. Sue thank you very much for your help. I truly appreciate it.

Algebra
1. A house valued at $100,000 gains 6 percent in value. Which expression shows the current value of the house in dollars? a. 6/100 * 100,000 b. 1.06 * 100,000 c. (1+0.06)100,000 d. 1.06(1 + 100,000) 2. Which equation has the same solution as -3(2x - 4)= 30? a. 2x - 4 = -10 b. ...

Algebra
I have 4 math problems, can you help.

Algebra
can you help me with algebra

Math
How many bags of fertilizer would I need to cover 1.68 acres

Math
The y-coordinates of the set of points on a graph. Also, the y-coordinates of a given set of ordered pairs. The range is the output in a function or a relation.

Math
What is: one that has several letters or variables

yale
what does brain processing and development described as use it or loose it mean?

Chemistry
What volume of air at 1.0 atm and 25 degree Celsius must be taken to an engine to burn 1 gallon of gasoline? Assuming that: 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O provides reasonable model of the actual combustion process. ( The partial pressure of oxygen in air is 0.21 atm ...

Pre-cal
Each of the two congruent sides of an isosceles triangle are 10 centimeters more than 1/2 the length of the base. If the perimeter of the triangle is to be at most 100 centimeters, what is the maximum length of the base?

math
jerry has to pay off his walking aids using a payment plan. he can afford $25 a fortnight. how many weeks will it take jerry to pay off the debt?

math
jerry needs to buy two walking aids. one will cost $150 and the other will cost$ 75. how much jerry need to spend?

math
choose all values of x that would make the inequality true and how? 2/3 or 0.6 or 3/6 or 59% or 58x10_2

geometry
RT=5x=7 and RS=15x-1, what is the value of x?

FIN/370
If a firm buys on trade credit terms of 1/10, net 45 decides to forgo the trade credit discount and pay on the net day, what is the annualized cost of forgoing the discount (assume a 360-day year)? The annualized cost of the trade credit terms of 1/10, net 45 is ?%. (round to ...

Algebra
Write the word phrase as an algebraic equation The ratio of 16 to x

life science
carbon dioxide is present in expired air

algebra
√6(5-√6)+2√6 simplify the expression

SS
I think the answer is D. That is just my opinion though, because Xiao has a badly polluted area that he lives in.

Math
You have a rectangular yard that has perimeter of 72 meters. The current area is between 300 and 350. What are the dimensions of your current fenced in space

Math 222
a^4b plus a^2b^3 a^4b + a^2 B^3 Thank you for the answer, but please explain it to me how you got it

Math 222
). a^4b plus a^2b^3

Math 222
18z plus 45 plus z^2 *My addition sign is not working*

College Algebra
Write an equation that has the given solutions. 0, 2, and 9

PED 212
What are some pros and cons in relevance within a school environment in organized sports?

geluksdal secondary school
Explain how you can determine the number of neutrons in an atom

College Algebra
solve for b, A=1/2(a+b)h

College Algebra
s=c+rc solve for c

College Algebra
A grocer mixes peanuts that cost $1.49 per pound and walnuts that cost $2.69 per pound to make 100 pounds of a mixture that costs $2.21 per pound. How much of each kind of nut did the grocer put into the mixture?

College Algebra
A person who is 6 feet tall walks away from a 50-foot tower toward the tip of the tower's shadow. At a distance of 32 feet from the tower, the person's shadow begins to emerge beyond the tower's shadow. How much farter must the person walk to be completely out of ...

College Algebra
A truck driver traveled at an average speed of 55 miles per hour on a 200-mile trip pick up a load of freight. On the return trip (with the truck fully loaded), the average speed was 40 miles per hour. What was the average speed for the round trip?

Physics
A(n) 0.42 kg softball is pitched at a speed of 12 m/s. The batter hits it back directly at the pitcher at a speed of 27 m/s. The bat acts on the ball for 0.016 s. What is the magnitude of the impulse imparted by the bat to the ball? Answer in units of N · s. What is the...

grammar
If there is practice after school on Friday, I can drop the kids off and you can pick them up.

PED 212
All tasks have rules. What is the rule in the example illustrated below? Start with one partner making an underhand serve to the wall. On the rebound, let the ball bounce before the second partner volleys the ball back to the wall. Try to keep the ball above the line. When ...

PED 212
How can a lesson plan be used as a form of program advocacy? (Points : 1) a). it can be published b). it can be shared with other teachers c).it demonstrates a professional ethic d). it can be shown ahead of time to parents

PED 212
I would say( b)

PED 212
What is the purpose of a learned society? a).to create curriculum for local schools b). to gain knowledge on a variety of subjects c). to develop a core of content experts d). to dedicate scholarship and research to specific subjects

PED 212
Which of the following factors is NOT essential to being able to properly strike an object? (Points : 1) a).tracking an object with the eyes b) intercepting an object c).swinging with force d).eye-hand coordination

PED 212
What is the purpose of a learned society?

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