Wednesday
June 1, 2016

Posts by john

Total # Posts: 7,736

Math
cos 20 they are the same because they are complementary angles. 70 + 20 = 90 80 + 10 = 90
May 12, 2016

N.H.H
x = # of $5 y = # of $1 x + y = 14 5x+ y = 26 -x-y = -14 5x + y = 26 4x = 12 x = 3 y = 11
May 12, 2016

Pre Calculus
The following table shows the rate of water flow (in L/min) through a dam. t (min) 1 5 9 13 17 21 25 V'(t) (L/min) 6 6 2 2 3 6 2 Approximate the total volume of water that passed through the dam from t=1 to t=25 using Simpson's rule, with n=6.
May 12, 2016

math
Which equation matches the following description?James loves making smores when he goes camping with his family.He puts half a chocolate bar on every smore.The number of chocolate bars,c,James needs is dependent on the number of smores,s,he wants to make. c=2s c=1/2s S=2c s=1/2c
May 11, 2016

Physics
How high will an arrow travel into the air when shot upwards? Bow stress: 68 J Arrow: 26 g (there is no air resistance)
May 11, 2016

math
a 14 foot ladder placed against a vertical wall of a building with the bottom of the ladder standing on level ground 9 feet from the base of the building. how high up the wall does the ladder reach?
May 10, 2016

math
Describe Sam´s location relative to the theater. Ordered pairs:Sam (4,2),Theater:(-3,5)
May 10, 2016

Maths
If Rick has $500 In his account after 4 years investing at 2.5% per year , how much money did he deposit initially ? Use =A =P (1+ r/n) 2). Your new laptop cost $1500 but depreciates in value by about 21% each year. a) How,much will your laptop be worth in 6 years ? Use A= Pe...
May 6, 2016

life orientation
Do a google search and I bet you will find a lot of examples.
May 6, 2016

Math 3
4 * 10^4 2 times 4= 8 subtract exponents 6-2 = 4
May 6, 2016

Math
E + E = O 1 + 1 = 2 2 3 1 ONE 2 3 1 ONE 4 6 2 TWO This is one possible solution, but there may be others.
May 6, 2016

MATH HELP PLEASE
1 -3 are correct. #4 anything raised to the zero power = 1 5 = 6) -16r^2 -10r 7) b multiply the coefficients and add the exponents. 8) d
May 6, 2016

Math
red = 95 blue = 5 x green red + green = blue -189 replace with what we know from above. 95 + green = 5 x green - 189 95 + g = 5g -189 194 = 6g divide by 6 to find number of green. Multiply that number times 5 to get the number of blue marbles.
May 6, 2016

Math
If y=8 when x=4,find y when x=5
May 5, 2016

Math
120 times 400 + 119.75 times 100 I think they may be including the extra 100 chairs.
May 5, 2016

Business math
8.50 + 11 (24) = 272.50 The total price Carrying charges 72.50 divide $11 into 200
May 5, 2016

Math
Monday 1/3 read means 2/3 unread Tuesday reads 3/10 of 2/3 He has 1/5 of the book left = 35 multiply 5 times 35 to get your answer. 1
May 5, 2016

trigonometry
from a second-storey window directly across the street. the angle of elevation of the top of an office building is 67 degre 30 mins. and the angle of depression of the base 18 degre 20 mins. if the building are 38 meter apart. wat is the height of the building ??
May 5, 2016

science
Use the penny to determine its hardness.
May 5, 2016

Math
Use Simpson's Rule and all the data in the following table to estimate the value of the integral b=-5 a=-11 x= -11 -10 -9 -8 -7 -6 -5 y= 6 -9 -3 -9 -1 -9 -1
May 4, 2016

Math Please Help ASAP
m^2 - 7
May 4, 2016

Algebra 2
I agree with your first two answers. Do you have an answer for the 3rd one?
May 4, 2016

algebra
290 because the 4 is less than 5.
May 4, 2016

Math
900 + 180 + 13
May 4, 2016

MATH HELP ASAP
For 1-4, cannot see the graphs. 5. To find the slope choose any two points (0,-4) (1, -3) change in y divided by change in x -4 - (-3) divided by (0-1) -1 / -1 = 1 Now, can you do 6?
May 4, 2016

math
a) 280 -250 divided by z = 1.2 Use a z- table to find the probability greater than z = 1.2
May 4, 2016

Physics
Suppose that two concentric rings, each with equal mass per unit length are joined so that they rotate together. Find the moment of inertia.
May 4, 2016

math
Just like you would multiply 2345 x 5679 Just multiply and when you are done put a decimal point two places from the left because there are two decimal places in the problem.
May 3, 2016

Math
To reach the ground, the height would be zero. 0 = -5t^2 + 35t - 2 You need to use the quadratic equation to solve for t, because this is not factorable. b) Time up = time down c) -b/2a will give you the max. height. -35/-10 = 3.5 meters -
May 3, 2016

algebra PLEASE HELP ASAP
4 red out of a total of 16 4/16 of a red You replace the red so you still have 16 7/16 chance of a blue AND means both events have to happen to you multiply the two fractions. 2) there is no replacement. Getting the same is the same as in #1 But... getting the blue is now 7/15...
May 3, 2016

algebra PLEASE HELP ASAP
a) the number of pink divided by the total number of pink and brown. b) the number of brown divided by the total number of pink and brown.
May 3, 2016

math help me asap
12! means 12 factorial that means 12 times 11 times 10 times 9 times 8 times 7 times 6 times 5 times 4 times 3 times 2 times 1. 4! is 4 times 3 times 2 times 1 8! is 8 times 7 times......all the way down to 1. Most people do this math using a calculator with a factorial key. ...
May 3, 2016

Math
x = -6 and x = 3 so x+6 = 0 and x -3 =0 (x+6)(x-3) = 0 0 = x^2 +3x -18 This will open up. 0 = -x^2 - 3x +18 This will open down. You can set this equal to y now. If you work backwards. Factor out the negative 1, factor the trinomial, you will can solve it and find the roots of...
May 3, 2016

math
the problem says the roof rises that is the 8 over a distance of 12 8/12
May 3, 2016

math
The is the same as the one I just answered, but with different numbers. Can you do it? rise/run.
May 3, 2016

math
pitch is rise divided by run 6/27 reduce this answer.
May 3, 2016

algebra PLEASE HELP ASAP
1) It is 1/3 of 90 2) 8! divided by 5! 3) is a combination 12! divide by (4!8!) 4) I agree with you 5) I agree with you.
May 3, 2016

Math
Since both = y, they must = each other x^2 + 2x = 3x + 20 x^2 -x -20 = 0 Now, factor: (x-5)(x+4) = 0 Can you find the values of x?
May 3, 2016

Math
Honor calculus students.. I think it would be skewed. More higher scores than lower scores. I don't think there would be much variation. What do you think?
May 3, 2016

algebra PLEASE HELP ASAP
1) I agree 2) 8/43 times 12/43 3) I am not sure what the question is asking. There is a weird symbol. 4) no replacement 5/14 times 3/13
May 3, 2016

Math
(19 + 21 + 22 + 28 + 18 + x) divided by 6 = 27 multiply both sides by 6 19 + 21 + 22 + 28 + x = 27(6) Now solve for x.
May 3, 2016

Math
I just did this one or one like it a few minutes ago. Please look for that post.
May 3, 2016

math
Sounds like the 46 is the diameter of the circle. area = pi times r-squared area = 3.14 times (23)squared or area = 22/7 times (23) squared
May 3, 2016

math
I would think that most of the heights would be very, very tall with a few shorter. The tail would be on the left with data clumped to the right. If the tail is on the left, it is skewed to the left. Do you agree?
May 3, 2016

Math
3/8 times 1/.03 = amount of vanilla in millimeters.
May 2, 2016

7th Math
1.5 x .946 x 7 every 3 days would get you 7 times in 21 days.
May 2, 2016

jiskha
It is free and everyone here volunteers their time.
May 2, 2016

health
You need to relax and think. What gets rid of body wastes? Would it be muscles? Do you know what cardiovascular is? How about excretory? I bet these words are in your texbook or else search them on the web. Come back with your answer and someone will check it.
May 2, 2016

7th Grade Math
145.16 rounded to the nearest hundredth.
May 2, 2016

7th Grade Math
90 miles times 1/.62 miles will give you the number of kilometers. so.. you are dividing .62 into 90 This will also be your miles per hour because the question is per hour to begin with.
May 2, 2016

math
5 times .75 = how much you need. Subtract 2.5 from your answer to see how many more cups you need.
May 2, 2016

Math
We can't see the video for 84
May 2, 2016

Math
kilograms/pound 200/440 you want to divide 440 into 200 pounds/kilogram 440/200 divide 200 into 440. You do not just reduce fractions to lowest terms because the question asks for unit rates. This means you need a "1" in the denominator.
May 2, 2016

math
200 words/minute
May 2, 2016

math
word per minute is a unit rate 1000/5 reduced will give you your unit rate.
May 2, 2016

Math
I think of combinations of co-captains. ( combinations starts with (co) Suppose there are 10 people on a team, how many ways can you choose co-captains. Remember since they are equal Joe and Sam are the same as Sam and Joe. For permutations.. think about a President and vice-...
May 2, 2016

MATH
I will do the first row 37 38 39 Can you do the rest?
May 2, 2016

Math
5 times 4 = 20
May 2, 2016

Math
8^2 - 8/2 64 - 4 = 60 writing 60 in primes 2 times 2 times 3 times 5
May 2, 2016

Science
I think so.
May 2, 2016

Math
.55x = 2 x = 2/.55 or 200/55 = 40/11 That is correct if your teacher wants the answer as an improper fraction otherwise 3 7/11
May 1, 2016

Math
6 7.5 8 23 32.5 The median because the data is skewed. Look at the difference between 7.5 and 8 is only .5 Difference between 8 and 23 is 15 To use the mean, you want the difference between the median and Q1 and Q3 to be about the same. Otherwise use the median.
May 1, 2016

Math
hours would be between 0 and 24. Would you want integers - that would include hours only and no parts of hours. Would you want real numbers that would include 1.5 hours, 1.25 hours, etc.
May 1, 2016

Math
Use a VENN diagram here. 15% like none 45% - overlap like literature 70% - overlap like music These are supposed to add up to 100% The add up to 130 which means that 30% would be in the overlap of liking both .30 x = 60 x = 200 x = 400
May 1, 2016

algebra
y= mx + b there is no b so b = 0 You will start your graph at (0,0) m = -1.5 means that the graph will slant downward from left to right -1.5 = -3/2 or 3/-2 you can move down -3 and to the right 2 or up 3 and to the left 2 to start your graph. Follow this pattern. x has to = 2...
May 1, 2016

Geometry
1. A point on the ceiling of a room is 12ft. from each of the vertices of a triangle on the floor whose legs are 6ft. A and 8ft. respectively. find the length of the ceiling. 2. With a 12ft. pole marked in feet, how can one determine the foot of the perpendicular let fall to ...
April 30, 2016

Geography
Without seeing the PPT, but just reading the sentence. Increase population decrease. Does this make sense to you?
April 30, 2016

MATHS (PROBABILITY)
45/200=.225 not satisfied (p-hat) 155/200=.775 satisfied(q -hat) Standard dev. The square root of (.225)(.775)/200 Margin of error = z-score times the sd 95% that leaves 5% with 2.5% in each tail or .025 which gives us a z-score from the table or from the calculator of 1.96 1....
April 30, 2016

Cape he loped high school
You sell lemonade for $2 and orange juice for $3. You sell 100 cups for $240. How many cups of lemonade and how many cups of orange juice were sold
April 29, 2016

Alerbra/Math
I need help on this question. The supplement or an angle is 18° less than the measurement of the angle
April 28, 2016

Data Analysis
al
April 28, 2016

ELA
how does the author reveals the theme of the drummer boy of shiloh
April 27, 2016

math
Cyndee wants to invest $50,000. Her financial planner advises her to invest in three types of accounts: one paying 3%, one paying 5 1/2%, and one paying 6% simple interest per year. Cyndee wants to put twice as much in the lowest-yielding, least-risky account as in the highest...
April 27, 2016

algebra
A miniature-doll collector has a total of 254 unique dolls. The collector can afford to add 3 unique dolls a week to the collection. Which algebraic expression represents the number of unique pieces the collector has at the end of w weeks?
April 27, 2016

7th Grade Math
b - because she starts with 200 and spends x dollars + sales tax .06x x + 0.6x = 1.06x Subtract what you spent with tax. 1.06x from the 200.
April 26, 2016

Algebra
x + y = 12 x - y = 4 Add the two equations together to eliminate the y. 2x = 16 x = 8 so y = 4 Check these values in the original equations.
April 26, 2016

Stastics
correct
April 26, 2016

math
Richard because a 16 x 16 grid has more squares than a 10 x 10 grid. 1/4 of a larger number gives us a larger number. They each shade a different number because 1/4 of 10x10 is a different number than 1/4 of 16 x 16.
April 26, 2016

math
80 seats Multiply 80 by .75 to get your answer.
April 25, 2016

Length of similar shapes
I answered this below just a few minutes ago.
April 25, 2016

Math
I wrote tan of 30 instead of tan 31 If you use tan 31, you should get 1338.
April 25, 2016

Math
Tangent = opp/adj tan 31 = x/2227 find tan 30 degrees and multiply that answer by 2227.
April 25, 2016

math
Use t and substitute into the equation. D = 5 + 5(0) = 5 D = 5 +5(1) = 10 etc.
April 25, 2016

Math, please help
How about the time it takes Joe to complete some task. He takes more time that Steve. 8 times 3 minutes less than .. can you do the problem now?
April 25, 2016

Math
m = 5k because every value in M is 5 times as big as the value in K. To help you do others like this problem divide each K into each M to see if you get the same value.
April 25, 2016

math
take away means to subtract. we will subtract 30 from j j - 30 or j minus 30
April 25, 2016

maths
Are you adding and rounding? 3 1/5 + 1 + 2/5 = 4 3/5 since 3/5 = .6, I would round to 5.
April 25, 2016

Math
16 more than a number divided by 4 16 + n/4 Antoine is correct. Zach's would be the sum of 16 and n divided by 4.
April 25, 2016

length of similar shapes
If they are similar then there sides are all in the same proporiton. 25/10 = 2.5 the ratio is 2.5 4cm long times 2.5 = 10 How would you find the width 7cm times ___ = ____
April 25, 2016

chemistry
25(.5) = 25(x)
April 25, 2016

Math
On your graph on the x-axis, you will have time 1, 2, 3, 4, On your y-axis put the miles d = 20t
April 25, 2016

Math
t = 19+ 15 L I think your teacher will want the 19 included in the total time. If not, then t = 15L
April 25, 2016

Stastics
I believe it is n-2 when doing a two sample t.
April 25, 2016

Stastics
I agree with c.
April 25, 2016

Itt tech
All you do is substitute -3 for x. 5(-3) + 8 = 0
April 25, 2016

Stastics
The 99% confidence interval is wider than the 95%. If something is in the 99% then it has to be in the 95% interval Since it seems that a and d would be correct, it makes me think that your teacher is trying to show you that confidence intervals can always be different because...
April 25, 2016

stastics
for t to get larger you will need the numerator of the problem to get larger and the denominator to get smaller. The formula has the difference between the means divided by the standard deviation. I would say d. The standard deviation decreases and the difference between the ...
April 25, 2016

Statistics
9% more Do you want to do a two sample test to see if 41% is statistically greater than 32%. If so, we need more information.
April 25, 2016

Math
rectangular area for cattle and uses a straight portion of a river as one side of the​ rectangle, as illustrated in the figure. Note that there is no fence along the river. If the farmer has 16001600 feet of​ fence, find the dimensions for the rectangular area that...
April 24, 2016

counseling
Don't see the choices.
April 24, 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>>