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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 answer
127 views
Calculate the pressure and composition of air on the top of Mt. Everest, assuming that the atmosphere has a temperature of 0oC
0 answers
289 views
y = 14when x = 1/2
2 answers
169 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
2 answers
1,351 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 answer
547 views
What decimal place should you mark as the last significant place?
(9.651 x 10^2) + 8
1 answer
246 views
How does the fact that culture is in constant flux and full of internal contradictions relate to the movement of human
0 answers
799 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 answer
905 views
Krisha is 9 years older than her youngest brother.the sum of their ages is 25.what are their ages?
1 answer
846 views
75 cm of isosecles triangle and the base length is 28 cm
1 answer
287 views
On vacation you wish to send eight postcards to friends at home. You find cards costing $.59 each. Eight postcard stamps cost
1 answer
569 views
Which one of the following accurately describes a proper use of eyeglasses?
A. Using converging lenses to help a nearsighted
1 answer
1,049 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?
0 answers
364 views
Express x times square root of x as a complete radical
1 answer
434 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.
6 answers
953 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
2 answers
1,038 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 answer
449 views
A cylinderical 30 gallon container is 42 inches high,find the diameter of the cylinder. If 1 gallon= 231 inches.(Hint: Use
1 answer
487 views
Simplify the radical.
16 ---- 49
1 answer
405 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 answer
954 views
Help please.
find the area of a square with an edge of 13
1 answer
708 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 answer
369 views
Is this answer correct?
What percent of .45 is .0015? the answer I got was 0.33%
1 answer
378 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 answer
503 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
0 answers
526 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
0 answers
530 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 answer
562 views
Against what country was the atomic bomb used?
A)Japan B)France C)Europe D)Russia
1 answer
414 views
Express as sum or difference of logarithm
log of x(3x-5) to the base of 4
1 answer
450 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
0 answers
684 views
Which description characterizes volcanic islands and not coral atolls?
A. Good soil for farming B. Islands are made of tiny
7 answers
1,289 views
Find all solutions to the equation
3sqrt(3-x)=-3/2. The 3 is the small number outside of the sqrt.
1 answer
453 views
I need to know the following for these places: Port Moody, Chinatown, Fort Langley (all in british columbia canada)
1. what the
1 answer
515 views
In conducting a hypothesis test for the difference in two population means where the standard
deviations are known and the null
1 answer
553 views
9.)The actual weight of 2-pound sacks of salted peanuts is found to be normally distributed with a mean
equal to 2.04 pounds and
1 answer
1,678 views
Consider the following hypothesis statement using alpha = .05, and data from two independent samples:
Ho: µ1 - µ2 = 0 Ha: µ1 -
1 answer
557 views
Can someone please help how to solve this I keep getting the wrong answer so I am now freaking out and clueless
23) The following
1 answer
555 views
Who financed the Middle, the South and the New England colonies?
2 answers
489 views
How are Primeval and Saga related to U.S. history. Also what does Saga mean?
1 answer
484 views
Can u please check my math answers
2 answers
436 views
Please check my answers on the following questions
Simplify: (X^6)^1/2 = x^3 1000000^1/6 I don't know this one (64n^12)^-1/6 =
4 answers
1,113 views
Students at a high school all took the same English test. The scores are approximately normally distributed with a mean of 77
1 answer
596 views
In a high school, 35% of the 3500 students participate in sports. The school board is proposing a participation fee to help with
0 answers
601 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 answer
423 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 answer
1,161 views
What are the mean, variance and standard deviation of these values?
62,41,54,60,49,58.
2 answers
603 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 answer
780 views
Susan keeps track of the number of tickets sold for each play presented at the community theater. Within how many standard
2 answers
1,373 views
What are the mean, variance, and standard deviation of these values? Round to the nearest 10th.
92, 97, 53, 90, 95, 98
13 answers
10,829 views
Simplify
3x(x^2 + 6x - 8)
1 answer
293 views
multiply using FOIL and identify values of a, b, & c.
(5x +5)(6x - 8)
5 answers
493 views
Simplify
(uv)0 ______ (u3 v)2
0 answers
316 views
Simplify
(x^-6)-3
0 answers
306 views
Simplify
6x - x^2 (x-3)
1 answer
356 views
Simplify (x-7)( x+7)
1 answer
864 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 answer
762 views
what is the 6th term of the geometric sequence 2000, 800, 320,..../
2 answers
455 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 answer
412 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 answer
720 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 answer
762 views
What are the first 6 terms of the sequence with the explicit formula
an=-3n2+4?
3 answers
506 views
Find the equation of the circle touching the lines x+2y=4, x+2y=2 and y=2x-5
Please I need help, its for my homework
1 answer
541 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 answer
502 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
2 answers
663 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 answer
737 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
0 answers
475 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 answer
688 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 answer
406 views
What does it mean to write a paper in APA format?
2 answers
465 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 answer
2,136 views
what is the complete ionic equation for the double displacement of CuNO3(aq)+K2S(aq)
1 answer
529 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 answer
955 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 answer
472 views
lim x->0 (e^x^2 - 1)/(square root(1+sinx)- square root(cosx))
0 answers
340 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 answer
932 views
a random group of seniors was selected from a university and asked about their plans for the following year. The school advising
1 answer
1,849 views
A random group of customers at a fast food chain were asked whether they preferred hamburgers, chicken sandwiches, or fish
1 answer
1,469 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 answer
1,190 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
0 answers
721 views
How do I simplify this? :l
4(x+y)]/(5x^2y^3) ÷ (-2x-2y)/10
1 answer
337 views
What compounds can be formed by the reaction of K2SO4 and BaCI2?
1 answer
531 views
1.Solve 5^(2x) -4(5^x)=12
2. Solve Log[8](log[8]x)=0
1 answer
371 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
0 answers
497 views
Solve 5^2x -4(5^x)=12
0 answers
281 views
What is 4.20 multiplied by 10^-4 in standard form.
1 answer
830 views
Use the pattern "1 less than 3 times the number." Start with the number 5. What is the 4th number in the pattern?
2 answers
948 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 answer
1,035 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 answer
661 views
factor out the GCF
6x^2-10x
1 answer
510 views
find the prime factorization of 120.
2 answers
478 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 answer
786 views
y=ln(2x-12)
1 answer
252 views
Solve for x: (3x+5)/((x-1)(x^4+7))
2 answers
365 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 answer
1,176 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
0 answers
999 views
ctgx+cosx=1+ctgx*cosx
1 answer
398 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
5 answers
641 views
Can anyone help me with a definition for Jewish people during the middle ages?
1 answer
408 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
2 answers
1,096 views
I don't get what the problem is asking?
"Which of the following shows the next step using the least common denominator simplify
0 answers
451 views
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