Friday
December 2, 2016

Posts by john

Total # Posts: 8,154

algebra
The line has a slope of 3 because y = mx+b where m is the slope. Perpendicular lines have slopes that are negative reciprocals. So we have a 3 which makes our perp line's slope -1/3 If you multiply the two slopes you will always get a -1 if the lines are perpendicular If ...
October 12, 2016

Math
Scientific notation always leaves one number to the left of the decimal .62 x 10 ^2 move the decimal point 1 place to the right to get 6.2 and now the exponent becomes 1.
October 12, 2016

Geometry
(3, 5) (5, -11) (x, y) 5 -3 = 2 so the x value should be 2 more than the midpoint (2,y) -11-5 = -16 difference so we need a difference of -16 from the -11 (2,-27)
October 12, 2016

Algebra 2
We have to see the table. I do know that a probability is always between 0 and 1. It looks like the only possible answer is 2/3. That is just a guess.
October 12, 2016

Algebra 2
without the table or a good description... I can't help.
October 12, 2016

Maths
1000 = k5^3 1000 = 125k 1000/125 = k k = 8 64 = 8 q^3 8 = q^3 q = 2
October 12, 2016

Geography
What are 3 types of zone?
October 12, 2016

Math
Where would I put parentheses to make this true? 7-3x4+6=27
October 11, 2016

Science
What is a bird speed flying at 12 m/s with a crosswind at 20 m/s
October 10, 2016

Math
each person gets 1/3 of the kites since there are 3 kites, each person gets 1 kite.
October 10, 2016

Statistics
I believe the E-4 is tell you to move the decimal point 4 places to the left. .000812 is less than .01 Remember all probabilities will be between 0 and 1.
October 10, 2016

spanish 2
Please fill in the blanks with the correct spanish form of the word in pernethesis!!!! Help Hoy yo______(ir) a un guateque campesino. ______ (ser) un ________ (event) especial en Cuba. Hay mucha _________ (food) y _________ (music). Yo _______ (estar) muy ___________ (excited...
October 10, 2016

History
i wish i knew
October 10, 2016

Statistics
Suppose systolic blood pressure (the higher of the two blood pressure readings) of a large group of individuals is normally distributed. If the mean is 122 and the standard deviation is 20, then
October 9, 2016

algebra
(x-1)/6 = 1/3 3x-3 = 6 3x = 9 x = 3
October 9, 2016

Math
16 + 7 = 23 oz. the other piece ways 12 oz.
October 9, 2016

PLEASE HELP ME
It is the median and it is not misleading. The $23.50 is an outlier. find the middle of the data it falls between 9 and 9.50
October 9, 2016

math
Whenever you multiply or divide across an inequality by a negative number, you change the direction. Think about 2 > -4 Multiply both sides by a -3 -6 > 12 NO... change the inequality -6<12
October 9, 2016

Management
low price
October 9, 2016

Management
If time is running out to finish the operational-planning process before the start of the new fiscal year, it should be cut short with the resolve to start earlier the next year. true or false?
October 9, 2016

Mathematics Help
35 females + 11 males who got a C 46/64 =
October 8, 2016

algebra
150-(65+20g)
October 8, 2016

maths
15(35.75)+16(42.25) = James total 25(35.75)+10(42.25) = Sally's total 18(35.75) + 13(42.25) = Andres Find the amounts then subtract the smallest from the largest.
October 8, 2016

Math
What is the standard form of five and three hundred fifty-two thousandths? 1: 5.0032 2: 5,352,000 3: 5.352 4: 5.30052000 Is it two?
October 8, 2016

maths
4, 6,7, 8 in the ten thousands 0,1,2,4,6,7,8 can be used in the thousands hundreds and tens could use any of the digits ones would have to be 0,2,4,6,8 if we can repeat the digits then 4 times 7 times 7 times 7 times 5 The only problem is that we don't want to have 40000 ...
October 8, 2016

math
A = lw 96 = (w+4)(w) w^2 + 4w -96 = 0 (w +12 )(w-8) =0 w=-12 cannot have a neg value here w = 8 so l = 12
October 8, 2016

Math
Jai = julia + 2/5 julia I am not sure what you mean by the next sentence.
October 8, 2016

Math
P = B+12 (P-1) = 3(B-1) P-1 =3B-3 substitute for P using first equation B+12-1 =3B -3 14 = 2B B = 7 P = 19 last year they were 6 and 18.
October 8, 2016

STATISTICS
true positive happens 96% of the time. Multiply .006 times .96 false positive .006 times .04 add the two together.
October 7, 2016

Statistics
c) When you create a 99% confidence interval this indicates that If you made many intervals by taking samples of the same size from a population then...99% of all of the intervals that you make will contain the true population mean. It would not contain 99% of the population. ...
October 7, 2016

Math
Thank you so much Bosnian!
October 7, 2016

Math
Find the product and explain the process and reasoning 0.67 x 0.3 Please help I don't know how I could explain this :(
October 7, 2016

Engineering/Physics
When gasoline is burned in the cylinder of an​ engine, it creates a high pressure that pushes on the piston. If the pressure is 150 ​pound-force per square​ inch, and it moves the 3​-inch diameter piston a distance of 6 centimeters in 0.1 ​seconds...
October 5, 2016

Physics
Briefly describe the relative quantities of kinetic, gravitational potential and mechanical energy as a stone is thrown in the air vertically upward and falls to the person's hand at the same height that it left.
October 4, 2016

math
r/b = 3/5 5r = 3b 20 + r = b 5r = 3(20 + r) 5r = 60 + 3r 2r = 60 r = 30 b = 50 ratio is 30/50 or 3/5
October 4, 2016

Chemistry
Base = NaOH, 0.084 M drips 2ml at a time Acid = Phenol, KA=1.3*10^-10 You have 28.0 ml in flask, and it is 0.06 M How would you find the molarity and moles of OC6H5-1
October 3, 2016

Math
x + x +1 = -11 2x = -12 x = -6 x = -5 product = 30
October 3, 2016

Math
That means that you have to multiply 11 times itself 2016 times. You would need to use a calculator with 11 ^ 16.
October 3, 2016

Algebra
distance = rate x time 5 + 40x = 50x 5 = 10x x = 1/2 hr
October 3, 2016

math
F = 4J F+J>= 55 4J + J >= 55 5J >= 55 J = 11
October 3, 2016

Math
7 x 3000 and 7 x 4000
October 3, 2016

Algebra
Tell us what you think and we will check it.
October 3, 2016

MATH
The forty and the 9th term of an AP is -3 and 12 respectively. Find the common difference and some of the frist 7th term
October 3, 2016

Chemistry
An Unknown Compound (M=60.09 g/mol) is composed of Carbon, Hydrogen and Oxygen. Combustion of 0.255 g of the unknown compound produces 0.561 g Carbon Dioxide and 0.306 g of Water. Determine the molecular formula of the compound.
October 3, 2016

math
2) The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
October 2, 2016

psychology
According to a survey in the U.S. in the 1990s, people in their 40s reported more lifetime sex partners than did people in their 50s. Which of these is the most likely explanation? a) People in their 50s were starting to lose their memory. b) People in their 40s had been young...
October 1, 2016

psychology
According to Hans Selye, stress is a) a specific response to a specific demand on the body. b) a cognitive, not physical, response to a threatening situation. c) any reaction that increases activity in the parasympathetic nervous system. d) a nonspecific response of the body ...
October 1, 2016

psychology
According to Abraham Maslow, what do we do when we have several motivations? A) We alternate between one and the other. B) We try to satisfy them at the same time. C) We are frozen with indecision. D) We start with the lowest need and work up. D Is my answer
October 1, 2016

math
john hiked 8 1/3 miles in 3 3/4 hours. what was John's average speed for the hike
September 30, 2016

Math
(3/4)pg/1 min = 3 pg/x cross multiply 3 = 3/4 x x = 4
September 29, 2016

Stats,
Put the values in order from lowest to highest. 25th percentile will have 1/4 of the data below that number. 90th will have .9 of the data below that nu
September 29, 2016

Algebra
7 more than 5 times a number is 10. Replace "a number" with something from the real world.
September 29, 2016

STATS
for anyone one question is .50
September 29, 2016

math
In a pet store there are 12 kittens for sale and 80 puppies. what is the ratioof the number of puppies to kittens ? write your answer as a fraction and reduce your result . thank you
September 29, 2016

English
I checked 1-9 and I agree with all of them except for the first one.
September 28, 2016

math
a^2 + b^2 = c^2 x^2 + 11^2 = 12^2 x^2 +121 =144 x^2 = 23 take the sq rt of 23 to find your answer.
September 28, 2016

Math
yes.
September 28, 2016

Algebra
Graph y = -|x -5| Make it a dotted line because the original problem is less than not less than or equal to. Let x=0 y=-5 x = 5 y = 0 x = 4 y = -1 shade
September 27, 2016

adv algebra
x/5 -3 = x/4 -2 x/5 -x/4 = 1 4x/20 -5x/20 = 1 -x/20 = 1 -x = 20 x = -20
September 27, 2016

science
Density = mass/volume 56/22 = If the answer is greater than 1 ..the density of water then it will sink.
September 27, 2016

Math
8 orange/12 selzer or 2/3 divide each part of the fraction by 3 to get per 1 cup of selzer. 2/3 over 3/3 or 2/3 for 1.
September 27, 2016

Math
A wire of length 24 meter is to be folded in the form of a rectangle. If each side of a rectangle has to be an integer (measured in meters), what is the maximum number of rectangles that can be formed by folding the wire?
September 27, 2016

Algebra
Pick any two points (0, 17.5) and (3, 35.4) Find the slope (35.4-17.5)/(3-0) 17.9/3=5.96666 or 5.97 y = mx+b 17.5 = b since x=0 y = 5.97x + 17.5 replace x with 15 and find y.
September 27, 2016

Algebra
Do this one the same way that I did the other one. (5,80) and (12,85)
September 27, 2016

statistics
An outlier is a value that is much larger than the rest or much smaller than the rest. range is the difference between the largest and the smalleest value. mean = add them all and divide by 30 mode is the value that occurs more than once. median. put all of the data in order ...
September 27, 2016

math
6200-6300 divided by 400 to get the z-score. Then use the z-table to find the probability of less than you z-score or you could use a stat calculator like at TI-83 or 84 to find the probability. For forty days you have to use 400 divided by the square root of 40 as the ...
September 26, 2016

Statistic
A recent poll conducted by Gallup Inc. asked the following question: In general, how much trust and confidence to you have in the mass media - such as newspapers, TV, and radio - when it comes to reporting the news fully, accurately, and fairly? A great deal, a fair amount, ...
September 26, 2016

Math
a ratio is when you put one number over another so I would say the ratio of 3 and 6 would be 3/6 which equals 1/2
September 26, 2016

math
x + x+2 <= 7+(x+4+x+6)/2 2x+2<= 7+x +5 Can you finish from here?
September 26, 2016

math
A quick way would be to multiply 1 1/2 times 8 which would give you 12 lbs. So..all you need is 12 lbs and you have 14 4/5. you have enough.
September 26, 2016

Math
It depends on what the graph looks like or the units that you are using.
September 26, 2016

Math
You are okay until the 8+8 step 8-8 = 0 5 - 16 =-11
September 26, 2016

Ap Chemistry
Saccharin has a pKa of 2.32 It has a formula of HNC7H4SO3 If you dissolve 4.6 grams of saccharin in 478 ml of water, what is the resulting pH ?
September 25, 2016

English Check My Answer
Try saying the sentence aloud with the words in each one. Only one of them makes sense in both.
September 25, 2016

English Check My Answer
Which word from the following list has meanings that fit both sentences? I’ll start the fire after _______ a match. The workers are ______ for a higher wage. A. Protesting B. Lighting C. Fighting D. Striking A is my choice.
September 25, 2016

Math
This is a right triangle (BD)^2 = 7^2+8^2 (DC)^2 = 16^2 +8^2 Can you finish from here??
September 24, 2016

Maths
A= 2R A-800=R-240 2R -800 = R -240 R = 560 A = 1120
September 24, 2016

Algebra
Multiply the second equation by -4 an add to the first equation. 4x - 6y = 10 -4x-4y= 0 -10y=10 y=-1 find x
September 24, 2016

chemistry
In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 lb of oil provides 2.2×107J. Part A How many kilograms of oil are needed to heat 110 kg of water from 24 ∘C to 100∘C? (Assume that 1lb=454g, the specific heat of liquid ...
September 23, 2016

University South Carolina
$9000 + $3x =12x solve for x and that will give you the break-even point. One more person will give you the profit.
September 23, 2016

math
This works just like an equation. Divide both sides by 3. The only difference is if you had -3x<18 you would divide both sides by -3 . Dividing or multiplying by a negative number means you have to switch the direction of the inequality.
September 23, 2016

5th grade math
insert in parentheses: 14+2=6+2x3+2
September 23, 2016

Math
Not a. You have to multiply the coefficients - the numbers and you add your exponents. Also,the correct answer only has one number to the left of the decimal point. The answer for the first one is d. I agree with your answer for the last one. Retry the other 2.
September 22, 2016

Math
You have to make table of the sample space 1,1 1,2 1,3 ... 1,6 2,1...............2,6 3,1................3,6 4,1 5,1 6,1 You should have 36 entries. Given the sum is greater than 3 will eliminate 1,1 1,2 and 2,1 So you are working with 33 possibilities for the denominator The ...
September 22, 2016

Statistics
Try adding one.
September 22, 2016

Science
Thanks.
September 20, 2016

Science
A group of parts that work together is called. A. Technology B. Process. C. System. D. Feedback I think its C?
September 20, 2016

Algebra
John earns $3 more than hugh. Leslie earns $2 less than twice Hugh. Together they earn $101. How much does Hugh earn?
September 20, 2016

Chemistry
10. Use the accepted Ksp value of Calcium hydroxide to calculate the following: a. What is the most calcium hydroxide that can be dissolved in 1.0 Liters of de-ionized water? b. What is the most calcium hydroxide that can be dissolved in 125.0 ml of de-ionized water? c. What ...
September 20, 2016

Commom Core Algebra
Factor out the common x + 2 (x+2)(x+3) Once you factor out(x+2) what is left is just x +3
September 19, 2016

Algebra
You have to decide which variable to eliminate. Lets choose x. We need the coefficients to be equal and opposite. I will multiply the first equation by 3 and the second equation by -5 15x + 12y =42 -15x -30y = -30 Add the two equations and the x will be eliminated. -18y = 12 y...
September 19, 2016

algebra 1
Divide both sides by 3 x-2 > -3 add two to both sides x> -1 The rules for inequalites are the same as for equations unless you are multiplying or dividing by a negative number.
September 19, 2016

Physics
A rocket accelerates upward at 3m/sec2 for 60 seconds when it releases a booster. How long will it take the booster to reach the ground from the highest point and what is its velocity as it is striking the ground? I'm unsure how to find the time if time is already given. I...
September 19, 2016

math
Simple interest 400(.05)(2) = $40 compound 400(1.05)^2
September 18, 2016

PHYSICS
32/ft/sec^2 or 9.8 m/sec^2
September 18, 2016

Math
okay
September 18, 2016

Math
Is the first one (y-5)/3= 1 multiply by 3 y-5 = 3 add 5 y = 8 6x =-24 divide by 6 so x = 4
September 18, 2016

math
-4x-4b =p + 8b -4x =p +12b divide by -4 D
September 18, 2016

Math
1 lb he saves 13.60 then for the other 1/8 he saves 1/8 of 13.60 Divide 13.60 by 8 and then add that answer to 13.60
September 18, 2016

math
just subtract 1/2 x from both sides r- 1/2 x =y
September 18, 2016

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. 14
  17. 15
  18. Next>>