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Dina

Questions (66)

The ratio of boys to girls at a certain school is 4:5. Calculate the number of boys if there are 1080 learners in the school
1. 1 answer
2. 384 views
As I solve this problem, it is undefined. Can you explain how you get 3 or 0. One of this is the answer but I'm not sure.lim as
1. 2 answers
2. 460 views
Gabriela has dinner at a cafe and the cost of her meal is $45.00Because of the service, she wants to leave a 15% percent tip.Wha
1. 3 answers
2. 3,250 views
If another mechanic is hired, fill up the table below and answer the following questions (1pt):a. Which configuration has the
1. 0 answers
2. 642 views
Ali is planning to keep fit through practicing push-ups for 21 days. on the first day, he can only do 14 push-ups in a minute.
1. 3 answers
2. 612 views
What mass of water is needed to completely react a 8.1 g packet of magnesium
1. 1 answer
2. 633 views
A. Should Congress be able to regulate private business activity? For example, should they be able to set rules or laws that
1. 1 answer
2. 567 views
Which calorimeter do you use for determining the specific heat of the metal, the thermos or the Styrofoam cup?
1. 1 answer
2. 1,089 views
Labor group: Student labor union (I am in the labor group!)Employer group: Administration of school
1. 6 answers
2. 604 views
I'm having trouble finding the answers to these questions (the answers should be in order from the article, it's just not
1. 6 answers
2. 2,101 views
1300 kg car rounds a banked curve of radius= 50m. If car traveling at 75 km/h and the coefficient of static friction between the
1. 3 answers
2. 1,336 views
3. suppose a gas at STP. Calculate its pressure at 25 degrees celcius if volume remains unchanged5. suppose 1.11 L of an unknown
1. 1 answer
2. 607 views
The questions asks to write a word equation and a balanced chemical equation for a reaction between aqueous copper (ii) sulfate
1. 2 answers
2. 2,090 views
For the Atwood's Machineso the mass on the right side is 5 kg box which is 3m from the *table (represents the straight line)*
1. 0 answers
2. 680 views
This is another question I had too and didn't understand as well.Vector Addition: Use the head to tail method to determine the
1. 1 answer
2. 723 views
Vector Addition:I know you can't physically do drawings on this site. Is there a way of someone explaining how to begin with
1. 1 answer
2. 690 views
I'm having trouble putting together a thesis and topic sentences. There is so much great information with my sources, everything
1. 2 answers
2. 622 views
A tortoise and a hare are having a 1000-meter race. The tortoise runs the race at a constant speed of 2.30 cm/s. The hare moves
1. 1 answer
2. 1,419 views
Problem 1)I don't understand how they got the answers for A) and B) : Ima Rushin can travel from Milwaukee Avenue to the school
1. 2 answers
2. 3,252 views
This is only part of the whole passage. What is the best way to simplify the horrific event because all this info is great to to
1. 1 answer
2. 602 views
when it rains, there is a 20% chance that Jamie will go to the gym. When it does not rain, there is a 60% chance that Jamie will
1. 0 answers
2. 456 views
when it rains, there is a 20% chance that Jamie will go to the gym. When it does not rain, there is a 60% chance that Jamie will
1. 0 answers
2. 486 views
A herd of 100 deer is introduced onto a small island. At first the herd increases rapidly, but eventually food resources dwindle
1. 1 answer
2. 615 views
which of the following assessments types has the greatest effect on your overall
1. 2 answers
2. 918 views
how do you make 50ml of .1 molar solution of benzylamine in acetonitrile
1. 1 answer
2. 389 views
You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales.Begins “Once upon a
1. 0 answers
2. 772 views
You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales.Begins “Once upon a
1. 2 answers
2. 912 views
A pig slides down a 29° incline in twice the time it would take to slide down a frictionless 29° incline. What is the
1. 2 answers
2. 970 views
As discussed in Example 4-7, the archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of
1. 0 answers
2. 688 views
You and a friend stand on a snow-covered roof. You both throw snowballs from an elevation of 18 m with the same initial speed of
1. 0 answers
2. 647 views
The amount of paint an electric paint sprayer applies varies directly with time. A sprayer is set to apply 0.5 gallon in 2.5
1. 0 answers
2. 802 views
What is the product of 9/x-1*7/x-3
1. 1 answer
2. 361 views
What is the pH of 4.7 M CH3NH3Cl. mehyl-amine, CH3NH2, Kb = 4.4 × 10-4.Do I find Ka first then take the -log(Ka) to find the pH
1. 1 answer
2. 1,226 views
What is the pH of a solution that contains 0.30 M HC2H3O2 and 0.95 M C2H3O2-? Use Ka = 1.8 × 10-5 for HC2H3O2.
1. 1 answer
2. 772 views
What is the definition of an equivalent?a lab procedure requires 1.25 equivalents of zinc powder. How do I determine how much
1. 3 answers
2. 774 views
I have .8ml of 35% by weight hydrogen peroxide. The hydrogen peroxide density is 1.14 g/ml. how many moles of hydrogen peroxide
1. 5 answers
2. 3,411 views
A car travels through a school zone at a speed of 36 m/s was the 45 mi/h speed limit exceeded? yes or no
1. 3 answers
2. 1,739 views
Consider a deck of 52 cards with the following characteristics:13 red cards, numbered 1 through 13 13 blue cards, numbered 1
1. 0 answers
2. 666 views
Given f(x) and g(x) below, find:(a) f + g (b) f – g (c) f*g (d) f/g Please show all of your work. f(x) = x + 5 g(x) =
1. 2 answers
2. 388 views
A wooden block that is a rectangular prism is 12 inches long. Melinda cuts the wooden block along its length into 4 cubes. How
1. 2 answers
2. 538 views
A chair lift holding a 100 kg man rises 5 meters in height in 10 second time period. Ignore the weight of the chair and related
1. 1 answer
2. 504 views
Simplify the expression.3 [ (15 - 3)^2 / 4] a. 36 b. 108 c. 18 d. 9
1. 3 answers
2. 685 views
The market for Good X can be depicted with the following demand and supply equations:Demand: P = 50 – 1/2Q Supply: P = 1/3Q
1. 1 answer
2. 1,043 views
A Giffin good is not correctly described by which of the following?A)A Giffin good must be an inferior good. B)A Giffin good
1. 0 answers
2. 888 views
Multiple choice1. If the friend offers to pay you $1 five years from today, the net present value will: A)be higher than $1.
1. 2 answers
2. 631 views
natural banks which are sometimes built up by a river along the edges of its channel are called:a.river bluffs b.river cliffs
1. 2 answers
2. 703 views
a delta is a:a.wid river mouth where tides are experienced b.long narrow arm of the sea resulting from the submergence of a
1. 1 answer
2. 1,569 views
which of the following group of rockscan be easily dissolved in water? a,sandstone,granite and obsidian b.limestone,granite and
1. 0 answers
2. 730 views
Hello, I am having problem with two lab questions and was wondering if someone can help!1. Calculate the percentage of the empty
1. 1 answer
2. 847 views
Hello, I am having problem with two lab questions and was wondering if someone can help!1. Calculate the percentage of the empty
1. 0 answers
2. 602 views
Can someone help me correct these phrases?Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the
1. 4 answers
2. 467 views
Can someone help me correct these phrases?Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the
1. 1 answer
2. 436 views
Can someone help me correct these phrases?Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the
1. 1 answer
2. 425 views
Can someone help me correct these phrases?Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the
1. 1 answer
2. 429 views
Can someone help me correct these phrases?Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the
1. 1 answer
2. 432 views
Can anyone help me with these Chemistry questions? I am trying to study for an upcoming test and its just not sinking in as well
1. 1 answer
2. 1,355 views
was hoping someone can help me check if these answers make sense for a silver copper alloy lab.3. Why don’t you have to weigh
1. 17 answers
2. 6,175 views
was hoping someone can help me check if these answers make sense for a silver copper alloy lab.3. Why don’t you have to weigh
1. 2 answers
2. 809 views
A solution of sodium chloride in water has a vapor pressure of 18.3 torr at 25°C. What is the mole fraction of NaCl in this
1. 1 answer
2. 753 views
Which ion in each of the following pairs would you expect to be more strongly hydrated?(a) Na+ or Mg2+ Why? thanks!!
1. 4 answers
2. 3,405 views
Well.. i posted this before and I re-edited a few things. I need suggestions and editing please :)
1. 8 answers
2. 590 views
ugh please help me, im having such a huge stress over this!Le premier arrondissement de Paris est le plus petit et assez
1. 5 answers
2. 710 views
Hi I was wondering if anyone can help me edit/proofread my english essay =)
1. 15 answers
2. 864 views
(sec(of theta)+1)(sec(of theta)-1)=tan^2(of theta)
1. 1 answer
2. 307 views
If 2^n>n^2 and n>5, then 2^n+1>(n+1)^2Proof: Assuming that 2^n>n^2 then I can say that 2*2^2>2*n^2 = 2^n+1>2n^2 If I can show
1. 1 answer
2. 451 views
how did using a formal writing process (planning, drafting, developing, revising, editing, and proofreading)help you creat more
1. 0 answers
2. 707 views

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