Sunday
July 24, 2016

Posts by John

Total # Posts: 7,840

Math
I assume that a system means two equations. That means that you graph each equation on the same x-y axis. You can find the points for each graph by using a table of values or you can use the slope intercept method to draw the graphs.
January 14, 2016

Chemistry
C3 H7 because you have to use whole numbers.
January 14, 2016

math
50 boys there would be 30 girls 100 boys there would be 60 150 boys there would 90 girls The above should give you an idea of what the ratio means 125 boys would be 75 girls and a difference of 50 more boys.
January 14, 2016

Math
If our car uses 0.7 gallon of gas in going 10 miles, how much will it use on a 100 mile trip?
January 12, 2016

us history
Pensacola is in Florida and New Orleans is in Lousianna. So..I don't agree with east.
January 11, 2016

Math
Drive is 6 hours 30 min Stop for gas is 10 min Now we have 6 hrs and 40 min. 45 min for lunch so 6 hrs and 85 minutes I hour = 60 minutes so you have 7 hours 20 minutes Can you use this information to figure out when to leave?
January 11, 2016

Physical Education
I agree.
January 11, 2016

math
Are you looking for another solution? if so what do you think/
January 11, 2016

Math
You can tell the lines are parallel if you solve each equation for y. The number in front of the x is the slope as in y =mx+b 6y =3x + 10 divide by 6 to get m=1/2 second equation 6y = 3x -4 m = 1/2 or you could graph both equations and see that they are parallel.
January 11, 2016

2 NDT grade math
green = blue + 2 blue + green = 15 blue + blue + 2 = 15 2b = 13 You can't have a 1/2 of a marble or can you? blue = 13/2
January 11, 2016

Math
I would say elimination since the x has coeffs that are equal and opposite so they will eliminate very easily.
January 11, 2016

us history
I agree again.
January 11, 2016

us history
I agree with you.
January 11, 2016

Math
If you use the elimination method and add the two equations together, if the variables are eliminated and you have a false statement like 0 = 15 then there is no solution. If you have a true statement like 0 =0 then there are many solutions. To check your work, you could also ...
January 11, 2016

math
this is pathegreom theorem 22. Points A, B, and C are corners of a triangular field where mABC is 90°, AB is 40 meters and BC is 45 meters. a) Find the length of AC . A 40 m B 45 m C b) John walks along the edge of the field from point A to point C. If P is the ...
January 11, 2016

math
John walks along the edge of the field from point A to point C. If P is the point on AC when John is nearest to point B, find the length of BP.
January 11, 2016

Algebra 1 Honors
Does your formula work with what was given?
January 9, 2016

Math
(9 + x)/2 = 6 This represents the average of the tests equal to 6. Multiply both sides by 2 9 + x = 12 Find x. Check to me sure the two tests have a mean of 6.
January 9, 2016

Physics- just verfiying an equation
As long as there is no denominator in the formula, each of your variables is directly related to centripetal force. This means if m, r or angular velocity are increased, then Fcent will increase. Due to the squaring on one variable, an increase in that variable will have a ...
January 9, 2016

Algebra
You are correct. If you plot these points you will have a horizontal line crossing the y-axis at 3. If you do the vertical line test, It will only touch one part of the graph; therefore it is a function. It is okay to have different values of x map to the same value of y. ...
January 9, 2016

math
3.60/12 4.96/16 5.20/20 You will get the price per ounce which represents a unit rate. Complete the division in each case and compare them to find the best unit rate.
January 9, 2016

math10
If something cost $100 dollars if you have a 10% discount you would pay $90. Another 10% discount then you would pay $81. The percent Discount would be 100-81/100 or 19%. So.. how dis we do this? Each time we paid 90% of the price. so .9 x .9 =.81 paid.. so our discount is 19%
January 9, 2016

maths
tan 20 = 50/x tan = opp/adj.
January 9, 2016

math10
Any easy way to deal with absolute value inequalities is to treat them like equations to begin with. You have 2 parts: x^2 -x -3 = x^2 -x -3 They are identical, so everything cancels here. Now take the opposite of the second polynomial. x^2 -x -3 = -x^2 +x + 3 2x^2 -2x -6 =0 ...
January 9, 2016

Math
You could graph these points and extend a line through the points to see if the lines cross at one point that would give you one answer. Since the problem states that they are linear, they won't have 2 answers. If the lines are parallel, no solution. If they really are the...
January 9, 2016

Math
If points are all on the same line, then the slope has to be the same no matter what two points we use. Take the first two points and find the slope. change in y/change in x 4 - 3 divided by 8 - 6 1/2 so the slope is 1/2 Now, set 1/2 equal to the slope equation that you create...
January 8, 2016

Biology
B b B BB Bb b Bb bb You see your possibilities. Now, can you get your percents?
January 8, 2016

math
y = 5x + 8 y = 3.5x + 14 You need to graph each equation on the same graph paper and see where the two lines cross. That point is your answer. I will give you a start. The first graph has a point (0,8) and the second graph has a point (0, 14) Find two more points for each ...
January 8, 2016

math
green 1/2 chance of even number white 2,3, 4, 5, 6 = 5/6 AND both happened 1/2 times 5/6 = 5/12
January 8, 2016

Math
Do you really understand how to do these problems? 350 is 70% of what number is = of means multiply. One way to do the problem is to write out the equation based on the sentence 350 = .70 (n) Divide 350 by .70 you will get 500 Another method is called IS over OF 350/n = 70/100...
January 8, 2016

health and pe
No.. not refusal. withdrawal means you are trying to get the drug out of your system.
January 8, 2016

Algebra
x = larger y = smaller x + y = 14 y = 14 - x 5 more than the larger 5 + 14 -x 5 + 14-x - 3x Now, simplify 19 -4x is the variable expression.
January 8, 2016

Calculus
You got it right bro
January 8, 2016

English - capitalization
The president invited Senator Smith to the White House for a meeting before preparing his address to the United States congress. Which of the following is an error in capitalization in the sentence above? A. The word "House" should be lower case. B. The word "...
January 6, 2016

English - punctuation
Thank you. And yes, B needs one more comma between "strong" and "heavyset" And I agree with you on D.
January 6, 2016

English - punctuation
which of the following sentences is punctuated correctly? A. The horse rode to our house, the beach, and around the church, before he started to tire. B. The strong heavyset fighter won his first fight, and he was featured in the newspaper. C. The ladies's hats were all ...
January 6, 2016

English
Yea, "although" ruined it all. So I chose C.
January 6, 2016

English
Although the path to success seemed clear, they were unable to take advantage of their position, and the other team triumphed. It was a humbling, but not catastrophic, failure. Which of the following is an independent clause from the sentences above? A. Although the path to ...
January 6, 2016

Subject-verb agreement
Hey Damon, I agree with you. Physics is much easier than English :D. So is it C the correct answer?
January 6, 2016

Subject-verb agreement
which of the following sentences demonstrates proper subject-verb agreement? A. News travel fast. B. Measles usually spread through respiratory fluids. C. Physics is a difficult subject to learn. D. They study of various sciences are compelling. A and D are not correct. C is ...
January 6, 2016

English
Thank you again.
January 6, 2016

English
After heart surgery, the patient spent all night quietly dozing until she was awakened by the cacophony of the hospital employees. Which of the following is the meaning for "cacophony" used in the sentence above? A. Harsh sounds B. Conversation C. Routine duties D. ...
January 6, 2016

English
I got it! It should be: Getting out of the car, the nurse who was late for work, put the manual into a large blue tote bag.
January 6, 2016

English
Hi Ms. Sue I don't know because the question itself is confusing So I think the correct sentence should be: The nurse, who was late for work, getting out of the car put the manual into a large blue tote bag. I don't know if it's correct or not. Which part of the ...
January 6, 2016

English
The nurse, who was late for work, put the manual into a large blue tote bag getting out of the car. Which of the following is misplaced in the sentence above? A. put the manual B. who was late for work C. getting out of the car D. into a large blue tote bag My answer is A. ...
January 6, 2016

English
Thank you, Ms. Sue!
January 6, 2016

English
The smugglers stood before the judge, who was known for her strict manner, and entered their pleas with feint hopes that the evidence would not prove their guilt. Which of the following homophones should be used to correct the error in the sentence above? A. Gilt B. Faint C. ...
January 6, 2016

calculus
i did get 8pi/3 but it wasn't one of the choices. Maybe there is a mistake in the question
January 4, 2016

calculus
the region bounded by the graph f(x)=x(2-x) and the x axis is revolved about the y axis. Find the volume of the solid. I did the integral using the shell method, but the answer wasn't correct.
January 4, 2016

Math
Just put in the 3 for the y. 3(3+2) add the 3 + 2 then multiply by 3.
January 4, 2016

math
Just treat them as x and y. No trick to the mixed numbers because it will happen automatically depending on the numbers use. x + y = 16 x - y = 5 add the two equations 2x = 21 Can you finish from here?
January 4, 2016

Math
Usually, you use the chart method when you are trying to find the value of the money left. In this case, I don't see the values. It is no different that saying you have 43 more red markers than blue markers. After he give away 17 blue markers, he had twice as many red ...
January 4, 2016

Math
x + y = 16 x - y = 15 add the two equations 2x = 31 so x= 31/2 or 15 1/2 So then y = 1/2
January 4, 2016

U.S. History
I agree with B.
January 4, 2016

Social Studies
I did a google search using 1943 riots Detroit and LA and got several great sources for you to use. It explains that problems started in LA and then Detroit had similar issues caused by race.
January 4, 2016

Math
It is hard to tell sometimes, but an arithmetic sequence would have the same number added or subtracted. That doesn't seem to be the case. A could way to check for a geometric sequence is to divide the first number by the second. I divided 3888 by 216 and got 18. Next try ...
January 4, 2016

Maths
Do you mean? (3x+2)/5 minus (2x + 3)/3 = 3 If so: Multiply by 15 to clear the denominators. since 5 goes into 15 3 times you have 3(3x+2) Since 3 goes into 15 5 times you have 5(2x+3) and 3 times 15 = 45 9x+6 - (10x+15) = 45 9x + 6 - 10x -15 =45 -x -9 =45 -x = 54 so x = -54 ...
January 4, 2016

Maths
If I am reading your problem correctly, I would say that h/45 = tan 25 degrees. Find the tan of 25 and multiply times 45 to get the height.
January 4, 2016

math
What is the sum of all values of x that satisfy the equation (x2 -5x+5)x2 +4x-60 =1? Hint: There are three cases to consider I think I figured out 2 of the cases. The first one being x2 +4x-60=0 while x2 -5x+5=whatever. The second is x2 -5x+5=1 and x2 +4x-60=whatever. But I ...
January 3, 2016

English
ms sue I have a question about a assignment I have to do can you help me?
January 3, 2016

math
Formula for distance to the horizon for a satellite in orbit. d = sqrt(2rh+h^2) d = distance to the horizon h = height above sea level for the observer. r = radius of the earth ---------------------------------- Solve for h. ie. so I can plug in d and r and get a solution for h.
December 30, 2015

Algebra I
Factor the numerator and factor the denominator. Then cancel like factors. Which is 3x + 1 Note, you removed the -6 so that the terms in your factor will be positive and match the denominator's factor.
December 30, 2015

Math
ax^2 + bx + c = y To find the solutions you let y = 0. x^2 + 6x + 9 = 0 x^2 + 7x + 12 = 0 x^2 - 4 = 0 x^2 + 4 = 0 Solve these and you will have your answer.
December 30, 2015

physics
It takes 2.75s for the rock to hit the water at 54.45mph, how high is the bridge?
December 25, 2015

7TH GRADE MATH
yes 9
December 22, 2015

Math
2.The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time. The price f(x), in dollars, of product A after x years is represented by the function below: f(x) = 72(1.25)x ...
December 19, 2015

Social Studies
A quick google search will tell you if the Bighorn sheep can be found in New Zealand.
December 18, 2015

Social Studies
A google search of Kiwi Bird... tells us they are nocturnal.
December 18, 2015

Physics
Two springs are set up on a table. The longer spring has a spring constant of 221 N/m and an initial length of 44.0cm. The shorter spring has a spring constant of 725 N/m and an initial length of 22.0cm. How far above the table is an 9.30kg ball when it reaches its equilibrium...
December 17, 2015

Physics
while walking behind a horse, a rancher walks 18.0 m (290degrees), then 25.0 m (340degrees) and finally 14.0 m (130 degrees) A)Calculate the displacement of the rancher b) if the rancher walks for 10 min, what is the average velocity of the walk?
December 17, 2015

English
Thankyou
December 16, 2015

English
What event (or events) mainly caused the fall of the British Empire? A. World War II B. the colonies rose up and fought back against the empire C. infighting between the British leaders caused it to implode from within D. both World War I and World War II My first choice (a.) ...
December 16, 2015

Accounting, Business Studies, Economics and Maths Lit
we do something like every day make sure you read books you will could get marks
December 15, 2015

chem equilibrium
Determine the pH of a buffer that is prepared by mixing 100 mL of 0.2 M NaOH and 150 mL of 0.4 M acetic acid assuming the volume is additive. Calculate the pH of the solution when 0.5 mL of 1 M of HCl was added hence calculate the buffer capacity.(Given:pKa of acetic acid = 4....
December 15, 2015

math
A meat department manager discovrs that she can sell m(x) killograms of ground beef in a week, where m(x) = 14 700 - 3040x, if she sells it at x dollars per kilogram. She pays her supplier $3.21/kg for the beef. a) Determine an algebraic expression for P(x), where P(x) ...
December 14, 2015

Physics
A 0.01 kg Styrofoam ball is released from rest 2m above the floor. It reaches a speed of 3m/s the moment before it hits the floor. How much heat due to air resistance is generated during this process?
December 13, 2015

Calculus
A spherical balloon is being inflated so that, at the time when the radius is 5m, the radius is increasing at the rate of 0.15m/s. (A) Find the rate of increase of the volume at this time. (B) If the rate of increase of volume thereafter remains constant, find the rate at ...
December 13, 2015

math
x = amount at 4% 10,000 -x = amount at 3% I = Prt Interest for amount at 4% is .04x since time is 1. Interest at 3% is .03(10000-x) the 4% interest is $246 more .04x = .03(10000-x) +246
December 12, 2015

science
The range is always a maximum if the angle is 45 degrees.
December 12, 2015

Algebra
Usually, time would be on the x-axis. slope is change in y/change in x slope = (6-4)/(45-30) slope = 2/15 miles/minute
December 12, 2015

Algebra
We need to see the graph. An easy way to make a match is to look for the intercepts and to check the slope. To make the equation easier to work with, I would multiply through by a -12 8x + 3y = -4 If x = 0 they y = -4/3 If y = 0 then x = -1/2 look for the points (0, -4/3) and...
December 12, 2015

Physics
never mind, i think i found my mistake. 521m/s is the final velocity, not initial. thanks guys
December 12, 2015

Physics
A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.840 m in 0.003 seconds. Determine the acceleration of the bullet. So I basically used the formula: Change in position= (Initial ...
December 12, 2015

Algebra
Draw the graph of y = 6x by filling in the table below. X| y = 6x ---------- -2| -1| 0| 1| 2| Domain = ? Range = ?
December 12, 2015

Math
if i have read 150 pages of a 240 page book, what percentage of the book have I read?
December 10, 2015

Math
In the expression ln(3-x)+ln(3+x) what is the highest possible number that x can be? I got to this point: ln(9-x^2) but what now? it seems to me that there is an asymptote at x = 3, so the answer is 2.9999999... but it can't be repeating because that would make it 3, ...
December 10, 2015

Algebra
Use the formula pH = −log[H^+] 9.. The hydrogen ion concentration of a substance is 4.3*10^-6 × moles per liter.Find the pH. Round to the nearest tenth. 10. Find the hydrogen ion concentration of a solution whose pH is 5.3.
December 10, 2015

Math
a plane flies 1.5 hours at 110 mph on a bearing of 10°. it then turns and flies 8.5 hours at the same speed on a bearing of 100°. How far is the plane from its starting point?
December 10, 2015

Algebra
Richey Loaner inherited $2105.22 from a not-so-rich uncle. If Richie deposits his money into an account that pays 3% compounded continuously for t years, then the function A(t)=2105.22e^0.03t gives the account balance after t years. (a) Find Richie’s account balance 6 ...
December 10, 2015

Chemistry
is delta S positive for the heating of water from 25 to 75 degrees Celsius?
December 10, 2015

Physics
How do you calculate V^2 ?
December 10, 2015

Physics
Thanks Damon
December 10, 2015

Physics
An arrow is fired horizontally at a speed of 50m/s from the top of a vertical cliff overlooking the sea. The height of the cliff is 12m. Determine The speed and angle to the horizontal of the arrow when it enters the sea?
December 10, 2015

Mathematics
An arrow is fired horizontally at a speed of 50m/s from the top of a vertical cliff overlooking the sea. The height of the cliff is 12m. Determine The speed and angle to the horizontal of the arrow when it enters the sea?
December 10, 2015

maths
0.6 of the children in a club are girls, if there are 27 girls, how many children are there
December 9, 2015

Algebra
Find the missing coordinate if (-2/3, is a solution of -6x + 7y = 11
December 9, 2015

Physics
I cant tell if ur srs or not? This seems like some taliban stuff
December 7, 2015

chemistry
Help me solve it. Step by step please The value of kp at 20°c for the reaction 2NO(g) +Cl2(g) 2NOCl(g) is 1.9x10^3 atm-1 calculate the value of KC at the same temperature.
December 6, 2015

Physics
A gas cylinder has a volume on 200l, and contains Nitrogen at a pressure of 200kPa and a temperature of 290 degrees Kelvin. The molar mass of Nitrogen is 14.0067g. Calculate. The number of moles in the gas cylinder?
December 4, 2015

Chemistry
The highest temperature ever recorded in Palm Desert, California, was 122„aF. Express this temperature in degrees Kelvin.
December 4, 2015

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