Thursday

July 24, 2014

July 24, 2014

Total # Posts: 3,271

**Math 208**

x+3y=2 -x+y=1 so y=x+1, substitute that into the 1st x+3(x+1)=2 x+3x+3=2 4x+3=2 4x=-1 x=-1/4 Substitute that into either of the original equations to solve for y.

**precal**

Why is there no corresponding point on tan^-1(x) for the (135,-1) on the graph tan(x). Thanks!

**7th grade math**

6+x=2x-14 Letters on one side, numbers on the other. Subtract x from both sides. 6=x-14 Add 14 to both sides. 20=x

**math**

The lines mean absolute value. It means to make whatever is inside positive. |2|=2 |-2|=2 -|2|-2 -|-2|=-2 Get it? Always do the absolute value part first.

**math**

Jess is right, it's add. 5 * 3 = 15. 5 * 2 = 10 and 5 * 1 = 5, 10 + 5 = 15.

**math**

(3.5x10^-3)(4.2x10^7)

**math**

6(n+2)-(4-n)

**english**

It's a personification, because it gives the lake a human quality (being wrinkled).

**math **

No solution.

**pre algebra**

All of the whole numbers between -4 and 6, not including them since it's not <=. -3, -2, -1, 0, 1, 2, 3, 4, 5.

**math **

I'll do the first one. x+8>15 You want to get the letters on one side and numbers on the other. Subtract 8 from both sides. x>7

**algebra 2**

2x+5y=10 x-3y=-6 Multiply the 2nd equation by -2 so that the x's cancel. 2x+5y=10 -2x+6y=12 Add the lines together. 11y=22 Solve for y, replace that in either original equation to solve for x.

**MATH PRE-ALGEBRA**

It should be an open dot because it's an inequality. It would be a closed dot if it was an equality, such as x=3.

**Algebra 1**

It's not a solution. It would have to say x>=-4 for that to be true. -4 is not more than -4.

**algebra**

half

**math **

Perimeter means to add the sides. Pool A: 10+2+10+2 Pool B: 7+7+7+7 Which is more?

**algebra**

2x+7+14=2x+21

**algebra**

9(2)-4.5=?

**Algebra**

.5x+7<=1.3x-8 7<=.8x-8 15<=.8x 18.75<=x or x>=18.75

**Math**

Should that say x^2+8x+15? I think it should..

**math**

what is the inverse function of f(x)=3/x-4

**integrated algebra**

8y-11<5 or 13<4y-7 8y<16 or 20<4y y<2 or 5<y, y>5 so y<2 or y>5

**algebra**

never

**geometry**

All I can suggest to do is draw it. I got (-3,-2)..im sure it's something like that.

**eng 20 F**

Try searching No Fear, Shakespeare online. It's very helpful.

**Social Studies **

Louisiana

**algebra 2**

(-3)^2-6(-3)+3

**math**

Just reduce each..15/30=1/2 and so on

**Geometry**

Since it's an equilateral triangle, AB=BC. 3x=2x+12, solve for x.

**Math**

You just divide it. 19/3=6 remainder 1, and the denominator stays 3.

**pharmacy tech**

To find out if a drug causes nausea, you would look in this section of the drug monograph

**math**

i/o 1 5 +4 2 8 +6 4 14 +10 8 ? +16 8+16=? (Input is doubling.)

**algebra**

3/4=60/x, cross multiply and solve

**Algebra**

a^2+b^2=c^2 The two sides are equal and you know c, so.. 2a^2=50 Solve for a.

**math**

It is B. For a great website on this, see h t t p : / / w w w . r e g e n t s p r e p . o r g / R e g e n t s / m a t h / a l g t r i g / A T E 3 / d i s c r i m i n a n t . h t m (without the spaces, obviously)

**'Twas the Night Before . . .**

Thanks for sharing! Did anyone notice it says Donder instead of Donner? lol.

**distributive property**

What's 5 *6x? What's 5 * 9? Remember to separate the two terms with the plus sign.

**math**

Just divide it out. 8/11=.727272 etc = .73

**5th grade math**

Inverse operations are like "opposites", what undoes the operation. Multiplication and division are inverses, as are addition and subtraction. For example, if you have 4x+2=10, you have to use the inverse of addition (subtraction) to get rid of the 2. 4x+2=10 Subtrac...

**Math**

y=7x

**math**

Tyler, I did one of these for you yesterday. You should be able to do them on your own now. Don't post any more of these problems without attempting them yourself (and showing work) first!

**math**

What are you asked to do with this?

**Math**

ASA

**Math**

Make up set of 7 numbers having these landmarks: mode 21, Median 24, maximum 35, range 20. If the maximum is 35 and the range is 20, that means the minimum is 15. 15 __ __ __ __ __ 35 We know the median (number in the middle) is 24. 15 __ __ 24 __ __ 35 The mode (used most oft...

**math**

Where are your answers?

**5th grade**

3 * 3 * 3 = 27

**spanish**

You can respond as follows: Yo tengo que comprar un/una ________ para el cumpleaños de mi madre/padre.

**writing in math**

He/she needs a multiplication story, not a division story. 5 classmates each have 2 pencils. How many pencils do they have in all? 5 * 2 = 10 pencils

**math**

sentence*

**math**

There are two factors in that sentences, the 9 and 4.

**7th math**

At the mall, you spent a total of $170.86. You bought 2 pairs of jeans for $ 39.95 each,a jacket for $45.99, and shirts for 14.99each. How many shirts did you buy? jeans=$79.90 jacket=45.99 total cost so far=125.89 170.86-125.89=$44.97 14.99x=44.97..solve for x, that's th...

**Math**

120abc

**math**

Yes. If the groups were equal, you could multiply them to get the answer quicker. Since they are unequal, you can only add.

**Math**

Where was this when I was in school?? LOL.

**Aims math [help please very appreciated]**

15x+4=21+2x Subtract 2x from each side. 13x+4=21 Subtract 4 from each side. 13x=17 Divide each side by 13. x=17/13

**algbra 2**

Yes.

**algbra 2**

sqrt8/sqrt9=sqrt8/3

**Math**

9 1/8 - 2 5/8 Since you can't do 1/8-5/8 because you can't do 1-5, you have to "borrow".. 9 1/8 becomes 8 9/8...if it was just 9 it would be 8 8/8 because 8/8=1..so it's 8 9/8 8 9/8-2 5/8=?

**math-still needs help**

That's not what he's referring to, Gabby. David, that means out of 25, pick 8. I forget how to solve these though, so hopefully someone else will respond.

**3rd grade Shurley English**

The responses were not by the 3rd grader, only the question was.

**math**

9-2(3x+1)>37 9-6x-2>37 7-6x>37 -6x>30 x<-5 (When dividing by a negative, greater than becomes less than and vice versa.)

**math**

Already done. Check your other post.

**math**

What's the LCM of 10 and 12?

**Math**

Thanks!! :)

**Math**

A punter's first four punts in a football game are 30 yds, 20 yds, 27 yds, and 29 yds. After a fifth punt, the punter's mean was 30 yards. How long was the fifth punt? Please help!

**Algebra**

(11+12+5+3+x)/5=7.4 31+x/5=7.4 Multiply both sides by 5 31+x=37 x=6

**english/grammer/manners**

Yes, there is a common between yes, ma'am. No, I don't think it's necessary to say that. I think it's a bit old school. There are other ways to show respect besides that.

**Substitution method**

x=2y y=2x+3, y=2(2y)+3 y=4y+3 Solve that and then replace it to solve for x. You can post your answer if you want it checked or need more help.

**incomplete**

TR=what?

**algebra**

3/8+y=-3/16 y=-3/16-3/8 y=?

**INCOMPLETE**

Write WHAT as a product of factors?

**11th grade**

Yes, that will actually be a right triangle. You can do the pythagorean theorem to check it.

**math**

1/2x+1/3y=5 1/4x+1/3y=4 First I want to get rid of the fractions..multiply the first equation by 6 and the second one by 12. 3x+2y=30 (1) 3x+4y=48 (2) Now multiply the first equation by -1. -3x-2y=-30 3x+4y=48 Add the equations together. 2y=18 Solve for y, put it back into (1)...

**Algebra**

Using the compound intrest formula's A=P(1+r/n)^nt and A=Pe^rt to solve the problem given. Round the answer to the nearest cent. I have to find the accumulated value of and investment of $20,000 for 6 years at an intrest rate of 4.5% compounded semiannually,quarterly,month...

**Algebra**

2-1=1 and 1-2=-1

**Math**

I don't think you just multiply the numbers for this one. If the question said that he was going to all 4 office stores, all 4 electronic stores, all 8 clothing stores, and all 5 sporting goods stores and asked how many ways can he do that, then you would multiply them all...

**6th grade**

10

**MATH**

What number? I would guess A since it's a set of ten and could've been rounded, but cannot tell without seeing the number.

**Math**

3, 6..They are increasing by 3 Bottom row is decreasing by 4

**Algebra one :)**

To rewrite in Ax+By=C form, rearrange the terms so that x and y are on the left and the number is on the right. 5y-6=2x+3 Subtract 2x from both sides. -2x+5y-6=3 Add 6 to both sides. -2x+5y=9

**Math **

You can't solve that unless you have more information that you forgot to include.

**chem**

2.62g

**English**

o Identify which paragraph was more effective and analyze why this is so. o Include a discussion of sentence variety and the rhythm of the author’s writing. o Focus on the writing rather than the opinions presented. o Underline your topic sentence. Did I do everything co...

**physics**

The coefficient of kinetic friction for a 22 kg bobsled on a track is 0.20. What force is required to push it down a 6.0° incline and achieve a speed of 70 km/h at the end of 75 m?

**Math**

Right. So what's 120 minutes from 3:00?

**Math**

LCM, not GCF

**physics**

what happens to the force of frictionif the coefficient of friction was reduced by one thrid

**6th grade**

All negatives would be negative, all positives would be positive, a positive and 2 negatives would be positive, 2 positives and a negative would be negative..

**English**

I need a 150 word paragraph with the the bullets at top say

**English**

I need a 150 word paragraph with the the bullets at top say

**English**

· Read two of the five paragraphs on the second page of this appendix. Write a brief paragraph of about 150 words in which you do the following: · o Identify which paragraph was more effective and analyze why this is so. o Include a discussion of sentence variety...

**error**

9.8c + 8d - 4.6c + 2.9d 9.8c - 4.6c + 8d + 2.9d 5.2c+10.9d

**5th grade**

Add 18 to get each number.

**government**

what is something i would find on commissioners court AGenda and not in city council court agenda?

**math **

That's what I'm thinking. It should work if you make the left and right sides the same and the top parts of "the house" the same. You can make the left and right both 5, and all other parts 2.

**spanish**

To tell how long it would take you, I would say it aloud just like you would for the exam and time yourself. You could also have someone else time you. I would do this at least twice.

**6th grade**

Two negatives make a positive, and 20/10=2, so your answer is 2.

**math**

Check your other post.

**Math**

How much Luke paid.

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