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erika

Questions (127)

xaio aims to get 8 hours of sleep per week night. on monday night he slept for 6 1/3 hours, on tuesday night he slept for 7 1/2
1. 1 answer
2. 408 views
Suppose you deposit $275.00 in your savings account on December 31.Your bank pays 3 percent annual interest on savings accounts.
1. 2 answers
2. 1,910 views
If sam drops a 40 kg mass from a height of 20 meters on earth how much was the potential energy of the mass before he dropped it
1. 2 answers
2. 509 views
a 500 kg elevator is lifted 10. How much work was donea 50 j b 50 j /kg c 5000 j d 5000 j/kg degree c
1. 1 answer
2. 437 views
work is measured in which of the following unitsa n b n-m c m d kg m/sec /sec
1. 4 answers
2. 325 views
if fred took a 40 N weight and dropped it from 10 meters. what would be the potential energy before he released ita 400j b 40
1. 4 answers
2. 410 views
If sam drops a 40 kg mass from a height of 20 meters on earth how much was the potential energy of the mass before he dropped it
1. 2 answers
2. 479 views
Using the equation 2H2 + O2 ==> 2H2O, determine how many grams of water is produced when 29 moles of oxygen is consumed
1. 1 answer
2. 739 views
Using the equation 2H2 + O2 ==> 2H2O, determine how many grams of water is produced when 29 moles of oxygen is consumed
1. 2 answers
2. 748 views
damon borrowed $1000 for 1 year and 7 months at an interest rate 6.3% compounded monthly. how much did he repay
1. 1 answer
2. 407 views
Please help so hard. My problem... In the coordinate plane point C lies on line segment AB. The coordinates for MN are (2,4) and
1. 1 answer
2. 805 views
Given the reaction:Cu2+(aq) + S2-(aq) CuS(s) What will happen (a) if CuSO4(aq) is added? And (b) if Na2SO4(aq) is added? A. (a)
1. 1 answer
2. 788 views
At a high temperature, the equilibrium constant for the decomposition of hydrogen iodide is 65.0. If the initial concentration
1. 3 answers
2. 1,745 views
The [OH-] ion concentration of a sample is 1 × 10-10 M. What is the concentration of [H+] in the sample at 25°C?A. 1 × 10-14
1. 2 answers
2. 694 views
What is a neutralization reaction?A. A reaction that involves neutral reactants B. A reaction in which the reactants are a salt
1. 5 answers
2. 1,728 views
If the equilibrium constant is much less than 1, what can you conclude about the concentrations of the reactants and products?A.
1. 3 answers
2. 1,207 views
How can you shift the equilibrium of the reaction between hydrogen and chlorine toward the products?H2(g) + Cl2(g) --> 2HCl(g)
1. 1 answer
2. 2,049 views
Given the reaction:Cu2+(aq) + S2-(aq) CuS(s) What will happen (a) if CuSO4(aq) is added? And (b) if Na2SO4(aq) is added? A. (a)
1. 2 answers
2. 818 views
The equilibrium constant for the formation of phosphorus pentachloride is 1.9. If the partial pressure of each gas is 0.5 atm,
1. 4 answers
2. 2,373 views
What effect does raising the temperature of the reaction chamber at a constant pressure have on the following reaction at
1. 2 answers
2. 2,389 views
Why does the density of gas in a hot air balloon decrease as the gas is heated?A. The mass of gas decreases as temperature
1. 2 answers
2. 2,135 views
What is the chemical equation that describes the complete neutralization of H3PO4 by NaOH?A. H3PO4 + 2NaOH Na2HPO4 + 2H2O B.
1. 2 answers
2. 2,554 views
Which of the following is true about the results of a neutralization reaction?A. An acid and a base form water and salt. B.
1. 1 answer
2. 644 views
Knowing what information would allow you to order gas molecules according to their velocity?A. Pressure and temperature B.
1. 0 answers
2. 749 views
How does table salt (NaCl) dissolve in water?A. Water molecules hydrogen bond with sodium ions and chloride ions. B. Each sodium
1. 1 answer
2. 1,244 views
The perimeter of triangle ABC is 13 cm. It was dilated to create triangle A'B'C'The perimeter of triangle...is cm
1. 3 answers
2. 1,754 views
the patient is seen by his family physician for follow-up treatment of recently diagnosed asthmatic bronchitis. the physician's
1. 1 answer
2. 578 views
The distance a spring stretches varies directly with the force applied to it. If a 7-pound weight stretches a spring a distance
1. 2 answers
2. 2,117 views
A jewelry store uses a markup rate of 70% on all items. If the wholesale price of a pair of earrings is $15.00, what is the
1. 2 answers
2. 684 views
Morgan had a bag of jolly ranchers. She counted 8 watermelon flavored candies in the bag of 46. If she bought a super-size bag
1. 1 answer
2. 601 views
Chumley from the TV show "Pawn Stars" bought some vintage watches for $15 each. He sold five of the watches for $36 each. What
1. 1 answer
2. 727 views
On the blueprint of a portable stage is 1 cm = 10 m. The length of the stage on the blueprint is 2 cm and the width is 1/2 cm.
1. 1 answer
2. 420 views
The graph gives a breakdown of the hours students use the tutoring center. If the graph is based on 300 students, how many used
1. 2 answers
2. 484 views
Miranda baked 48 muffins to sell at the school bake sale. She sold 2/3 of the muffins and gave the rest to her friends to eat.
1. 1 answer
2. 1,002 views
Claire earns a 15% commission from her lipstick sales. Her sales for the month of April were $400. How much commission did
1. 1 answer
2. 773 views
On the blueprint of a portable stage is 1 cm = 10 m. The length of the stage on the blueprint is 2 cm and the width is 1/2 cm.
1. 1 answer
2. 461 views
The temperature at 1:00 pm on Tuesday was -13C. There was an increase of -6 per hour starting at 1:00 pm. Which of the following
1. 1 answer
2. 448 views
Tia's parents gave her $20 to spend at the Spring Carnival. She spent $5 on a funnel cake and the remaining money on tickets for
1. 1 answer
2. 584 views
Jimmy spends ¾ of an hour getting ready for school. It takes 30 minutes to travel to school. If he needs to be at school at
1. 1 answer
2. 932 views
Hank rode his motorcycle half the distance from Lumberton to Wilmington, which are 70 miles apart. How many miles did he ride?
1. 1 answer
2. 509 views
It is 3 miles around Westwood Park exercise trail. After skating around the trail 5½ times, Mr. Zorn lost a wheel. How many
1. 2 answers
2. 483 views
Donald bought 10 woodcarvings for a total of $220. If they were all the same price, how much did he pay for each wood carving?
1. 1 answer
2. 361 views
An advertiser needs a 4-inch picture of a 14 foot automobile. What is the scale factor? Write your answer in simplest form using
1. 2 answers
2. 1,065 views
Sarah calculated the points she earned on her test. Sarah thought she earned 95 points but the teacher told her she actually
1. 1 answer
2. 634 views
target is advertising a Sony camcorder for $299.99 this week. If the regular price is $329.99, what is the percent of discount
1. 1 answer
2. 485 views
3.6 is 12% of what number?
1. 1 answer
2. 811 views
A jewelry store purchases earrings from a manufacturer for $5.00 each. If the store wants to mark up the price by 75%, what will
1. 1 answer
2. 497 views
a candle was 45 cm long .It was lit and 20% burned off .The candle went out.The next day it was lit again ,and 25% of the
1. 1 answer
2. 742 views
the cost (c) is twice of the cost of a 7$ tape what is the price of the cd
1. 1 answer
2. 360 views
Juan sold a boat that he bought 5 years ago. He sold it for 70%less than he originally paid for it. If the original cost is b ,
1. 1 answer
2. 613 views
pine city (x) is less than or equal to 20 miles from sun vally depending on the route you take how many miles is pine city from
1. 2 answers
2. 418 views
this month`s sales of $85,000 are greater than 1/2 of the sales of march repesented by the letter . What was March`s sales .
1. 3 answers
2. 586 views
maria throws a ball straight up with an initial velocity of 10m/s what is its velocity at the highest point?
1. 1 answer
2. 999 views
Your new designer chair has an S-shaped tubular metal frame that behaves just like a spring with the spring constant 13500 N/m.
1. 3 answers
2. 687 views
Given that: 4(2g + 104) - 96 = 504 + 6(g - 14), solve for g.i'm confused on how to set this problem up - if anyone could help
1. 2 answers
2. 576 views
if 2 out of 100 second graders are randomly selected, find the probability that they are both boys and like spring.boys/spring
1. 2 answers
2. 424 views
a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 feet in height. it contains a box which is 4.25 feet in
1. 1 answer
2. 709 views
Jorge sees that there are small and large squares in the tile design belo.how many squares are there in all in the design?
1. 2 answers
2. 694 views
- Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two
1. 1 answer
2. 539 views
a child is pushing a shopping cart at a speed of 1.5 m/s. how long will it take this child to push the cart down the aisle with
1. 2 answers
2. 826 views
Two different relationships are shown below.Relationship 1: xy = 3 Relationship 2: A graph is shown that has the following
1. 0 answers
2. 712 views
A particle with a +5.0 µC charge and a kinetic energy of 0.090 J is fired into a uniform magnetic field of magnitude 0.30 T. If
1. 1 answer
2. 541 views
how do you convert .99grams of copper to moles using the atomiuc weight
1. 1 answer
2. 327 views
The angle of depression from the top of a lighthouse to a boat in the water is 30°. If the lighthouse is 89 feet tall how far
1. 1 answer
2. 1,563 views
The ellipse x^2+3y^3=13, has two points when x+-1. Find the slope of the ellipse at both these points. 2. Thoroughly explain the
1. 2 answers
2. 3,300 views
write a program that displays all the cards in a deck using one tuple for suit and one for rank.
1. 0 answers
2. 471 views
what is 10000 less than 337676
1. 1 answer
2. 300 views
3h2+n2 makes 2NH3's if I have 4moles of H2 instead and 2 moles of N2 would I still just say I have 2.0 or 2.7?
1. 1 answer
2. 366 views
how many grams of NaOH are needed to react with two moles of H2SO4
1. 3 answers
2. 1,613 views
COuld someone help me with my homework? I need to write a thesis statement for a research paper on steve job
1. 1 answer
2. 489 views
what does this quote from jean arp "Soon silence will have passed into legend. Man has turned his back on silence. Day after day
1. 16 answers
2. 553 views
What does this quote from Albert Einstein "it has become appallingly obvious that our technology has exceeded our humanity".
1. 8 answers
2. 557 views
What does this quote mean from aldous"technological progress has merely provided us with a more efficient means of going
1. 13 answers
2. 647 views
What does the quote from Jean arp "soon silence will have passed into legend.man has turned his back on silence. Day after day
1. 2 answers
2. 1,095 views
What does aldous Huxley quote mean "Technological progress has merely provided us with more efficient means of going backward."
1. 1 answer
2. 1,257 views
a car is moving down a street at 55km/h.A child suddenly runs into the street. If it takes a driver 0.75s to react and apply the
1. 2 answers
2. 2,421 views
you drive a car for 2.0 h at 40km/h, then for another 2.0 h at 60km/h. what is your average velocity?
1. 0 answers
2. 621 views
the winninq three-digit number in a drawing for a door prize had the same units and hundreds digit. the product of its units and
1. 0 answers
2. 641 views
in 8 years rachel will be twice as old as warren. Today the product of their ages is 384. how old is rachel and how old is
1. 1 answer
2. 625 views
if the perimeter of an equilateral triangle is a number half size of its area, how long is each side?
1. 1 answer
2. 461 views
brendan mixed cola and cherry juice to make a party drink. for each 16-ounce can of cola, he used one ounce of cherry juice. if
1. 1 answer
2. 1,173 views
brian is 26 years older than his daughter kim. the sum of their ages is twice the differences of their ages. find their ages.
1. 1 answer
2. 683 views
a steamboat travels 9 miles up a river in 3 hours and returns the same distance down the river in 2 hours. find the speed of the
1. 2 answers
2. 681 views
the perimeter of a rectangular field is 172 meters. double the width is 4 meters more than the length. find the area of the
1. 1 answer
2. 701 views
Magnetisim is a type of
1. 1 answer
2. 312 views
Calculate the equilibrium concentration of H3O+ in the solution if the initial concentration of C6H5COOH is 6.0×10^-2. Kc=6.3
1. 1 answer
2. 1,502 views
For the equilibrium Br2 + Cl2 goes to 2BrCl at 400 K ,Kc = 7.0. 0.30 of Br2 and 0.30 of Cl2 are introduced into a 1.0 L-
1. 1 answer
2. 1,261 views
what are the continents that are entirely in the southern hemisphere
1. 2 answers
2. 409 views
The line y=2x + b is tangent to the graph y= sqrt x at the point P= (a,sqrt a). Find P and determine b
1. 1 answer
2. 2,689 views
calculate the number of moles of gaseous N2 contained in a sample of 300 ml of gas saturated with water vapour at 25 degree
1. 0 answers
2. 1,054 views
Use the Infix to Prefix algorithm shown in class to translate the following arithmetic expressions into the fully parenthesized
1. 0 answers
2. 403 views
List two ways that the media influences campaigns.This was not covered in this lesson im in so i don't know how to answer it.
1. 5 answers
2. 953 views
What is a social contract, and why is sovereignty an important part of a social contract?
1. 2 answers
2. 685 views
What are some other examples of paradigm in science and the field of medicine?
1. 3 answers
2. 617 views
How can the individual patient, the community, and society as a whole address these challenges of demographics?
1. 1 answer
2. 428 views
find the equation of a quadratic function whose graph is tangent at x=1 to the line whose slope8, tangent at x=-2 to solve the
1. 1 answer
2. 904 views
find the equation of a quadratic function whose graph is tangent at x=1 to the line whose slope8, tangent at x=-2 to solve the
1. 2 answers
2. 1,940 views
A woman pushes a lawn mower with a con-stant force of 112 Newtons at an angle of 37� with respect to the horizontal. The lawn
1. 1 answer
2. 582 views
Part 1A 15.6 kg block is dragged over a rough, hor- izontal surface by a constant force of 72.2 N acting at an angle of angle
1. 4 answers
2. 2,304 views
A triangle whose sides are 5,12, and 13 inches is similar to a traingle whose longest side is 39 inches. What is the perimeter
1. 2 answers
2. 1,515 views

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