Friday

October 21, 2016
Total # Posts: 8,091

**Math**

5, 35, 245 can you find the other one?

*October 20, 2016*

**Math**

1/4= x-y 1 = 4x-4y (1-4x)/4 = y

*October 20, 2016*

**Math**

5(7 - 3) is this what you mean?

*October 20, 2016*

**Math**

L = 2w -16 2L + 2W = 100 substitute for "l" 2(2w-16) + 2w = 100 4w -32 + 2w =100 6w = 132 Can you finish from here?

*October 20, 2016*

**Algebra 1**

square the x value and multiply by 3.. if that value equals H(x) or y. 3(1)^2 = 3 this one works. 3(1)^2 = 3 not 9 so the second point doesn't lie on the function. Your try the last 2

*October 20, 2016*

**science**

Oh and last thing is how does half-life work

*October 20, 2016*

**science**

What is the geologic time scale and what are some thing scientists use it for (at least two things)? Here's my answer could you please verify. the geologic time scale is a record of the geologic events and life forms in Earth’s history. Scientists use it to understand...

*October 20, 2016*

**Math**

Kenny reads 4/9 page in 3/4 minute Kenny's unit rate is (what) page per minute

*October 19, 2016*

**Math, Algebra**

you are welcome

*October 19, 2016*

**Math, Algebra**

(3y-6)/3 <= -6 3y-6 <= -18 3y <= -24 y <= -8 (4y-8)/2 > 6 4y-8 >12 4y > 20 y > 5 with OR the solution is y is less than or = -8 or y>5

*October 19, 2016*

**Maths**

x= larger y= smaller x-y = 24 x= 4y 4y -y =24 3y = 24 y = 8 x = 32

*October 19, 2016*

**Math**

x + y = 27 x = 2y 2y + y = 27 3y = 27 y = 9 x = 18

*October 19, 2016*

**Matg**

15 4/4 -10 1/4 = 5 3/4 5 3/4 + 7 2/4 = 12 5/4 = 13 1/4

*October 18, 2016*

**Algebra 1**

3.25 + .65x <= 6 .65x<= 2.75 divide by .65 to get your answer.

*October 18, 2016*

**Math**

g = 24+C c = a +35 a+g+c =100 can you finish from here?

*October 18, 2016*

**math**

30/18 = L/27 5/3 = L/27 3L = 5(27) L = 45

*October 18, 2016*

**Math**

10 times 25 = 250 200 + 250 = 450 feet blow

*October 18, 2016*

**Math**

.5 = 5/10= 1/2 3/8 is less than 1/2 18/8 = 2 1/4 or 2.25

*October 18, 2016*

**math**

5 times 1.8

*October 18, 2016*

**Maths**

You want factors of 4 and -3 since they multiply to equal 12 and add to be the 1 in front of the x. you should have x = 3 and x = -4 When I worked with the first and third, I got (x-3)(x+2) x = 3 x = -2 so the x=3 showed up twice. Substitute it in each of the 3 equations to ...

*October 18, 2016*

**Math please help**

-x/(x-5) + 7x/(x^2 -3x-10) -x/x-5) + 7x (x-5)(x+2) The first fraction needs a denominator of (x-5)(x+2) Multiply the num and denom by x + 2 -x^2 -2x +7x = -x^2 +5x num over (x-5)(x+2) num factor -x(x-5) cancel the x-5 -x/(x+2)

*October 18, 2016*

**math**

7. The tennis team is selling key chains as a fundraiser. If its goal is to raise is at least 180, how many key chains must it sell at $2.25 each to meet that goal? Write and solve an inequality. a. 2.25k (greater than or equal to) 180; k (greater than or equal to) 100 b. 180k...

*October 18, 2016*

**math**

On a 28-question test, there are 2-point questions, 4-point questions, and 5-point questions. The test is worth a total of 100 points. There are twice as many 2-point questions as 5-point questions on the test. How many 2-point questions are on the test?

*October 18, 2016*

**English**

Some have more than a hundred and some have none, its very colourful and you see it every morning someone please tell me the answer

*October 18, 2016*

**Grammer**

“I don't know, but it's hanging by its feet,” chirped Flitter

*October 17, 2016*

**Grammer**

What is the simple subjects and simple predicates?

*October 17, 2016*

**Grammer**

i don't know, but it's hanging by its feet chirped flitter What is the complete subject and complete predicates

*October 17, 2016*

**Economics-Macro**

Suppose you borrow $100 of principal that must be repaid at the end of two years, along with interest of 4 percent per year. If the annual inflation rate turns out to be 8 percent, (a) What is the real rate of interest on the loan? (b) What is the real value of the principal ...

*October 17, 2016*

**Economics-Macro**

Help please?

*October 17, 2016*

**Algebra2**

It looks like inverse, x doubled from the 1st to second point and y became 1/2 as much. from 5 to 15 tripled 2 to 2/3 became 1/3

*October 17, 2016*

**math**

1/2 (n) - 6 = 4 add 6 then divide by 2.

*October 17, 2016*

**6th grade algebra**

To get the number of feet you have to take the square root of 7410 then divide that answer by 13 to get "h"

*October 16, 2016*

**Math**

5280 feet = 1 mile 90/5280 = what part of a mile 60 seconds in 1 minute and 60 minutes in 1 hour divide 1.9/3600 what part of an hour to get mph, divide the first answer by the second.

*October 16, 2016*

**Statistics**

10 disks 7 or 8 makes 2 possibilities 2/10 = 1/5

*October 16, 2016*

**MATH**

8 divided by 5 = 1.6 so 1.3 is not correct.

*October 16, 2016*

**Math**

I agree.

*October 16, 2016*

**math**

d = rt 360 = (x -t)33 360= (x+t)22.25 360 = 33x-33t 360 = 22.5x - 22.5t Can you solve from here?

*October 16, 2016*

**Math**

(12-9)/sd = 2.5 I got 2.5 by finding the inv of .0062 3/sd = 2.5 3/2.5 = sd sd = 1.2

*October 15, 2016*

**Statistics**

A confidence interval is found by adding and subtracting the margin of error. If we take the difference of 235.1 and 197.2 and divide by 2 we have the margin of error. this margin of error is found by taking 1.96 times the standard deviation. To find the standard deviation ...

*October 15, 2016*

**Math**

Do you mean something like (10-2) x 25 = 250 -50 = 200 then 200 (20-3) 4000 - 600 = 3600

*October 14, 2016*

**Statistics**

0 because if all scores are 80 the mean is 80 and all values are 80 so there is no spread in the data.

*October 14, 2016*

**Statistics**

a) a 30 instead of a 3 gives us more variability in the data.

*October 14, 2016*

**Physics**

An automobile leaves the store, first going south at 88 km/h for 2 hours, and then turns on a road heading 20 degrees east of north at 55 km/h for 1.5 hours. Calculate the (x,y) components of the net displacement of the automobile from the starting position, where the x-axis ...

*October 13, 2016*

**Math**

65t -50t =97.5 15t = 97.5 divide by 15 to find time in hours

*October 13, 2016*

**math**

(1/7)^4

*October 12, 2016*

**math**

This is a right triangle. The legs are (x+20)1 and 1x (x+20)^2 +x^2 = 450^2 2x^2 +40x + 400 = 202500 2(x^2+20 x + 200) =202500 x^2 + 20x + 200 =101250 x^2 + 20x -101050 = 0 Can you finish from here?

*October 12, 2016*

**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*