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Lea

Questions (171)

Determine the percent mass composition and the molecular formula of the compound analyzed , such that it’s molar mass is
1. 1 answer
2. 164 views
Calculate the pressure and composition of air on the top of Mt. Everest, assuming that the atmosphere has a temperature of 0oC
1. 0 answers
2. 309 views
y = 14when x = 1/2
1. 2 answers
2. 186 views
This statement is false: If a number has 2 and 6 as factors, then it has 12 as a factor. Which of the following numbers prove
1. 2 answers
2. 1,377 views
The density of a solution is 1.23 g/mL. What volume of solution, in mL, do you need in order to provide 1.00 lb of solution?Use
1. 1 answer
2. 585 views
What decimal place should you mark as the last significant place?(9.651 x 10^2) + 8
1. 1 answer
2. 268 views
How does the fact that culture is in constant flux and full of internal contradictions relate to the movement of human
1. 0 answers
2. 835 views
A customer from Cavallaro's Fruit Stand picks a sample of 3 oranges at random from a crate containing 65 oranges, of which 4 are
1. 1 answer
2. 945 views
Krisha is 9 years older than her youngest brother.the sum of their ages is 25.what are their ages?
1. 1 answer
2. 883 views
75 cm of isosecles triangle and the base length is 28 cm
1. 1 answer
2. 309 views
On vacation you wish to send eight postcards to friends at home. You find cards costing $.59 each. Eight postcard stamps cost
1. 1 answer
2. 605 views
Which one of the following accurately describes a proper use of eyeglasses?A. Using converging lenses to help a nearsighted
1. 1 answer
2. 1,079 views
Donna was born in a year with exactly 15 factors and still alive and well. how old will he be on his birthday in 2018?
1. 0 answers
2. 393 views
Express x times square root of x as a complete radical
1. 1 answer
2. 468 views
A baker is decorating the top of a round cake with cherries. The diameter is 10 inches. Each cherry is 2 inches in diameter.
1. 6 answers
2. 1,021 views
Diane asked her dad to buy 18 bottles of soft drink. Each bottle contained 5/4 litres. The glasses they had for the party could
1. 2 answers
2. 1,076 views
If y^5 + 3(x^2)(y^2) + 5x^4 = 49 , then dy/dx at the point (–1, 2) is?I have no clue how to start this problem, could someone
1. 1 answer
2. 496 views
A cylinderical 30 gallon container is 42 inches high,find the diameter of the cylinder. If 1 gallon= 231 inches.(Hint: Use
1. 1 answer
2. 523 views
Simplify the radical.16 ---- 49
1. 1 answer
2. 437 views
In a distribution where the mean is to the right of the median, the histogram of the distribution will probably:a. have a longer
1. 1 answer
2. 992 views
Help please.find the area of a square with an edge of 13
1. 1 answer
2. 738 views
A car travled 10km at 2pm and by 5pm it travled 80km how far did it travel round to the nearest whole number
1. 1 answer
2. 401 views
Is this answer correct?What percent of .45 is .0015? the answer I got was 0.33%
1. 1 answer
2. 404 views
Why were plants helpful in the early development of land?What is the one most important resource plants that moved to land had
1. 1 answer
2. 540 views
1) Design a gear system using 12, 34 and 36 teeth gears that achieve a gear ratio of 13.5:1 and has the top and bottom gear
1. 0 answers
2. 561 views
For a pulley system with 8 supporting strands, how far would you have to pull the rope to lift a 125 kg object 1.0 meters off
1. 0 answers
2. 568 views
How did the discovery of the electron change the atomic model?A.It disapproved the earlier idea of an invisible atom. B. It
1. 1 answer
2. 610 views
Against what country was the atomic bomb used?A)Japan B)France C)Europe D)Russia
1. 1 answer
2. 470 views
Express as sum or difference of logarithmlog of x(3x-5) to the base of 4
1. 1 answer
2. 485 views
A 50 kg ice hockey player standing on a frictionless ice surface throws a ball, mass of 5.0 kg horizontally with a speed of 3.0
1. 0 answers
2. 742 views
Which description characterizes volcanic islands and not coral atolls?A. Good soil for farming B. Islands are made of tiny
1. 7 answers
2. 1,331 views
Find all solutions to the equation3sqrt(3-x)=-3/2. The 3 is the small number outside of the sqrt.
1. 1 answer
2. 478 views
I need to know the following for these places: Port Moody, Chinatown, Fort Langley (all in british columbia canada)1. what the
1. 1 answer
2. 544 views
In conducting a hypothesis test for the difference in two population means where the standarddeviations are known and the null
1. 1 answer
2. 593 views
9.)The actual weight of 2-pound sacks of salted peanuts is found to be normally distributed with a meanequal to 2.04 pounds and
1. 1 answer
2. 1,732 views
Consider the following hypothesis statement using alpha = .05, and data from two independent samples:Ho: µ1 - µ2 = 0 Ha: µ1 -
1. 1 answer
2. 607 views
Can someone please help how to solve this I keep getting the wrong answer so I am now freaking out and clueless23) The following
1. 1 answer
2. 608 views
Who financed the Middle, the South and the New England colonies?
1. 2 answers
2. 533 views
How are Primeval and Saga related to U.S. history. Also what does Saga mean?
1. 1 answer
2. 517 views
Can u please check my math answers
1. 2 answers
2. 470 views
Please check my answers on the following questionsSimplify: (X^6)^1/2 = x^3 1000000^1/6 I don't know this one (64n^12)^-1/6 =
1. 4 answers
2. 1,157 views
Students at a high school all took the same English test. The scores are approximately normally distributed with a mean of 77
1. 1 answer
2. 661 views
In a high school, 35% of the 3500 students participate in sports. The school board is proposing a participation fee to help with
1. 0 answers
2. 646 views
A school wants to determine the average time it takes students to get to school. Every student coming off the bus is surveyed.
1. 1 answer
2. 458 views
In a cooler there are 8 bottles of grape juice and 12 bottles of orange juice. There are also 6 blueberry yogurts and 9
1. 1 answer
2. 1,210 views
What are the mean, variance and standard deviation of these values?62,41,54,60,49,58.
1. 2 answers
2. 634 views
A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher
1. 1 answer
2. 815 views
Susan keeps track of the number of tickets sold for each play presented at the community theater. Within how many standard
1. 2 answers
2. 1,415 views
What are the mean, variance, and standard deviation of these values? Round to the nearest 10th.92, 97, 53, 90, 95, 98
1. 13 answers
2. 10,899 views
Simplify3x(x^2 + 6x - 8)
1. 1 answer
2. 326 views
multiply using FOIL and identify values of a, b, & c.(5x +5)(6x - 8)
1. 5 answers
2. 539 views
Simplify(uv)0 ______ (u3 v)2
1. 0 answers
2. 346 views
Simplify(x^-6)-3
1. 0 answers
2. 338 views
Simplify6x - x^2 (x-3)
1. 1 answer
2. 387 views
Simplify (x-7)( x+7)
1. 1 answer
2. 913 views
Can you find the error for me in this equation, find the explicit formula, evaluate the formula for n?I think the error is in
1. 1 answer
2. 817 views
what is the 6th term of the geometric sequence 2000, 800, 320,..../
1. 2 answers
2. 494 views
Your uncle loaned you some money and did not charge interest. The amount you owe him at the end of each of the first 5 months is
1. 1 answer
2. 432 views
Are these correct?a1=(-3x1)2 +4=13 a2=(-3x2)2+4-40 a3=(-3x3)2+4=85 a4=(-3x4)2+4=148 a5=(-3x4)2+4=229 a6=(-3x4)2+4=328 The first
1. 1 answer
2. 774 views
What is a recursive definition for the sequence 3, 5, 9, 17, 33.....My answer was adding muliple of numbers, is this correct?
1. 1 answer
2. 804 views
What are the first 6 terms of the sequence with the explicit formulaan=-3n2+4?
1. 3 answers
2. 541 views
Find the equation of the circle touching the lines x+2y=4, x+2y=2 and y=2x-5Please I need help, its for my homework
1. 1 answer
2. 586 views
Find the equation of the circle with radius sqrt2 tangent to the line x+y=3 and having its center on the line y=4x
1. 1 answer
2. 551 views
Find the equation of a circle passing through (-1,6) and tangent to the lines x-2y+8=0 and 2x+y+6=0.Please I really need your
1. 2 answers
2. 707 views
Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0.Please, How do I solve this? Help me
1. 1 answer
2. 774 views
Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0.Please, How do I solve this? Help me
1. 0 answers
2. 526 views
Find the equation of a circle passing through (3,7) and tangent to the lines x-3y+8=0 and y=3x.Please Help me solve this.
1. 1 answer
2. 725 views
What is the probability that any two humans with the same parents will be identical(other than identical twins)for each parent's
1. 1 answer
2. 456 views
What does it mean to write a paper in APA format?
1. 2 answers
2. 495 views
The formulas for ethane, ethene and ethyne are C2H6, C2H4, and C2H2 respectively. Rank this chemicals 1,2,3(highest)in terms of
1. 1 answer
2. 2,189 views
what is the complete ionic equation for the double displacement of CuNO3(aq)+K2S(aq)
1. 1 answer
2. 569 views
Why is gas a chemical reaction not detectable by sight? Explain?my answer is because the atoms or molecules of matter in the
1. 1 answer
2. 986 views
A man on a 2m high ladder throws a ball in the air with an initial velocity of 22m/s. If the ball is not caught by the man and
1. 1 answer
2. 532 views
lim x->0 (e^x^2 - 1)/(square root(1+sinx)- square root(cosx))
1. 0 answers
2. 368 views
Test the significance of the correlation coefficient r at a=0.05 for the data below.X values 59, 65, 73, 80, 89 Y values 97,
1. 1 answer
2. 983 views
a random group of seniors was selected from a university and asked about their plans for the following year. The school advising
1. 1 answer
2. 1,896 views
A random group of customers at a fast food chain were asked whether they preferred hamburgers, chicken sandwiches, or fish
1. 1 answer
2. 1,513 views
Test the significance of the correlation coefficient r at a=0.05 for the data below.X values 59, 65, 73, 80, 89 Y values 97,
1. 1 answer
2. 1,233 views
The table list the sugar content of two types of apples from three different orchards. At a=0.05, test the claim that the sugar
1. 0 answers
2. 760 views
How do I simplify this? :l4(x+y)]/(5x^2y^3) ÷ (-2x-2y)/10
1. 1 answer
2. 366 views
What compounds can be formed by the reaction of K2SO4 and BaCI2?
1. 1 answer
2. 568 views
1.Solve 5^(2x) -4(5^x)=122. Solve Log[8](log[8]x)=0
1. 1 answer
2. 404 views
Verify if this is the correct form please.Given the parent function f(x)=log[10]x, state the equation of the function that
1. 0 answers
2. 535 views
Solve 5^2x -4(5^x)=12
1. 0 answers
2. 313 views
What is 4.20 multiplied by 10^-4 in standard form.
1. 1 answer
2. 868 views
Use the pattern "1 less than 3 times the number." Start with the number 5. What is the 4th number in the pattern?
1. 2 answers
2. 1,002 views
a 50 kg person has a weight of 80 N on the surface of the moon what is the acceleration due to gravity
1. 1 answer
2. 1,071 views
If sales volume exceeds the break-even point, the firm sill experience a)an operating loss,b)an operating profit c)an increase
1. 1 answer
2. 695 views
factor out the GCF6x^2-10x
1. 1 answer
2. 542 views
find the prime factorization of 120.
1. 2 answers
2. 506 views
We're doing multi-step equations, and I need help on how to check my answers?I knew how to do it on two-step equations, but now
1. 1 answer
2. 840 views
y=ln(2x-12)
1. 1 answer
2. 275 views
Solve for x: (3x+5)/((x-1)(x^4+7))
1. 2 answers
2. 405 views
I'm doing a Medieval ABC book, and I need to draw an illustration for each word.How can I illustrate "zeal"? Also I hope I
1. 1 answer
2. 1,213 views
I'm doing an ABC book for Medieval words, and I need to do one for the letter Z.I found the word Zupan, but I'm not entirely
1. 0 answers
2. 1,036 views
ctgx+cosx=1+ctgx*cosx
1. 1 answer
2. 434 views
I'm doing an ABC book with words from the Medieval Ages, and I can't find any word that starts with X.I've been searching
1. 5 answers
2. 675 views
Can anyone help me with a definition for Jewish people during the middle ages?
1. 1 answer
2. 426 views
This is kind of a weird question, but, I need to do a Medieval ABC book, and right now I'm at E. And I need to draw a picture
1. 2 answers
2. 1,135 views
I don't get what the problem is asking?"Which of the following shows the next step using the least common denominator simplify
1. 0 answers
2. 497 views

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