Thursday

January 19, 2017
Total # Posts: 104,043

**algebra**

Collect like tems firrst in p^2: 1-3 = -2 in p 4: + 23 = +27 numbers: -23 + 23 = 0 so we have -2 p^2 + 27 p you could write that as -p(2p-27)

*December 22, 2016*

**Social**

Okay thank you so much. This really helped me a lot. Thank you. I appreciate you time and effort

*December 22, 2016*

**Social**

Okay thank you so much. It helped understand the question more. Can you now simplify the question in simpler terms? So it is easy to understand please.

*December 22, 2016*

**Social**

Can you clarify what, to what extent means? i'll try to answer the question then..

*December 22, 2016*

**Social**

The question I have to answer is: To what extent should individuals play a role in serving their nation when the nation is self-interested? I just need a few ideas on how to answer it. I get what the question means but I don't know what to write for it...

*December 22, 2016*

**Social**

To what extent should individuals play a role in serving their nation when the nation is self-interested? I think that they should play a role because they belong to the nation. Their voice matters, and even though the nation is still thinking about only themselves, they ...

*December 22, 2016*

**data management gr.12**

Thank you very much for you help and explanations.

*December 22, 2016*

**data management gr.12**

A particular genetic trait occurs in 2% of the population. The reliability of a test to discover the trait is: if the person has the trait then the test is positive 98% of the time, but the test is also positive 3% of the time for those that do not have the trait. a)Construct ...

*December 22, 2016*

**English**

Can anyone help me? I have to complete this in 20 more minutes.

*December 22, 2016*

**English**

I think it is C

*December 22, 2016*

**English**

The speaker in “Mending Wall” feels the wall is (1 point) unnecessary since they have different types of orchards. important for keeping good relationships in the neighborhood. a tradition that reminds him of his father’s generation and era. a way to stay in ...

*December 22, 2016*

**data management gr.12**

Kirk and Les regularly play each other at darts. The probability that Kirk wins any game is 0.3 and the outcome of each game is independent of the outcome of every other game. a)Find the probability that in a match of 15 games Kirk wins b)find the expected number of game in a ...

*December 22, 2016*

**physics**

A child of mass 40kg jumps off a wall and hits the ground at 4m/s he bends his knees and stops in 1s calculate the force required to slow him down how would this force be different if he didn't bend his knees and stopped in 0.1s

*December 22, 2016*

**data management gr.12**

A hamburger restaurant offers 2 types of buns, 3 types of meat burgers and 4 types of different toppings. How many different hamburgers can be prepared if the chef must choose 1 bun, 1 meat burger but can have no topping, one topping or more than one toppings? Please verify if...

*December 22, 2016*

**data management gr.12**

(7C3 x4C2) # ways of choosing committee 3 males + 5 females. I made a mistake, I think it should be 9C5 instead of 4C2 => (7C3 x 9C5) (7C4 x 9C4) choosing 4 males + 4 females (again I made a mistake) Thanks

*December 22, 2016*

**data management gr.12**

In how many ways can a committee of 8 members be chosen from 7 males and 9 females if the committee must contain at least 3 males? Please verify if my solution is correct: total# of 8 members 16C8 #with NO males 7C8 # with at least 3 males (7C3 x 4C2)+ (7C4 x 4C1)+(7C5 x9C0) ...

*December 22, 2016*

**data management gr.12**

How many different sums of money can you make with three coins of different denominations? Thanks

*December 22, 2016*

**math**

yh x=10

*December 22, 2016*

**Calculus**

If y = 2x - 8, find the minimum value of the product of xy. I think this is -8.

*December 22, 2016*

**Maths**

a new colony was built and the builder gave contract to a sign maker to number the buildings from number 1 to 500.How many zeroes will the need?

*December 21, 2016*

**data management gr.12**

A game is defined by the rules that the die is rolled and the player wins varying amounts depending on the number on the upper face according to the following table: sum 1 2 3 4 5 6 Winnings $10 $9 $8 $7 $6 $5 The cost to play the game is $7.00 a) what can a player expect to ...

*December 21, 2016*

**data management gr.12**

Thank you so much. You have been really helpful. The teacher gave us the normal probability table that ends at 2.9 So it was impossible for me to solve without the proper software or the propability table.

*December 21, 2016*

**data management gr.12**

It is known that approximately 20% of the population is colour blind. In a sample of 270 people, use the normal approximation to find the probability that: a)at least 100 people are color blind b)exact 100 people are color blind Thanks.

*December 21, 2016*

**data management gr.12**

The number of immigrants living in a certain country with a large population makes up 35% of the population. In a random sample poll of 40 people what is: a)the expected number of non-immigrants will be polled? b)the probability that no immigrants will be polled? c)the ...

*December 21, 2016*

**social studies**

The Emergency Highway Energy Conservation Act was passed in 1974. Under this act, states would only get federal highway funding if they set a speed limit of 55 mph on all four-lane highways. Why would the federal government deny funding the states instead of just directly ...

*December 21, 2016*

**chemistry**

How many grams of aluminum is produced from the decomposition of 34grams of aluminum oxide

*December 21, 2016*

**Math**

A line has a slope -4/3 and passes through the point (12,6). Determine three additional points of this line. I'm very confused of this

*December 21, 2016*

**SS**

How did the supreme court decision in Worcester v Georgia and the Indian Removal Act lead to the removal and resettlement of native American groups?

*December 21, 2016*

**Anonyms**

By what percent will a fraction change if its numerator is decreased by 50% and its denominator is decreased by 25%?

*December 21, 2016*

**math**

a ?ùn is fired at a distance of 24•3 away from a man • he hears the sòùñd after 27 second find the speed of soùnd at which it travels

*December 21, 2016*

**English**

In a certain code TGFYWOAG means SECURITY. In the same code what does GGHHGGJS mean? A) FINANCES B) CARRIAGE C) RETAINER D) FEEDBACK

*December 20, 2016*

**Math**

Is (2,12) a solution to the given system? y>2x+4 y<3x+7 Yes No What is the solution of the system of equations shown below? 2x+2y=10 5x-2y=4 (-2,7) (2,7) (2,3) (3,2) The point (-3,11) is a solution of which of the following systems? y?x-2 2x+y?5 y>x+8 3x+y>2 y>...

*December 20, 2016*

**science**

In me is me In me is a twin Which is said to flee When slumber comes in

*December 20, 2016*

**Techm**

What is a bin range

*December 20, 2016*

**math**

Make a list of data values thays fits this statement Half of the days of February were colder than 30 degrees fahrenheit find the mean, median, mode, and range of the data?

*December 20, 2016*

**math**

what is the mean median mode and range of 420,450,480,440,420,490,580,590,510, 450,430,480

*December 20, 2016*

**Math**

Data that would represent a bar gragh

*December 20, 2016*

**Chemistry**

how many sulfate ions are in 30 formula units of aluminum sulfate?

*December 19, 2016*

**Business Finance**

You deposit $300 each month into an account earning 7% interest compounded monthly.

*December 19, 2016*

**Business Finance**

Deposit $300 each month into an account earning 7% interest compounded monthly. How much total money will you put into the account? How much total interest will you earn?

*December 19, 2016*

**Write the system of equations as an augmented matr**

-4x-y=-6 -8x-5y=-6 Solutions:

*December 19, 2016*

**math**

a car traveling at 25 miles per hour is 48 miles over the first 5 second it maintains this speed for the next 5 seconds and than slow to a stop during the next five seconds which graph below could match the situation described

*December 19, 2016*

**Math**

Each week I save half my pocket money and I buy stamps for my collection with 1/3 of the pocket money. That leaves $3.21. How much do I spend on stamps?

*December 19, 2016*

**Physics**

A 13 kg block(mA) rests on a level table. The coefficient of kinetic friction between the block and the table is .15. A string of negligible mass is attached to the block. The string, which is perfectly horizontal, passes through a frictionless pulley at the edge of the table ...

*December 19, 2016*

**Algebra 1a**

Find the slope of a line that passes through the given points (-6,1) (4,8)

*December 19, 2016*

**Social studies**

oh forget it

*December 19, 2016*

**Social studies**

hello?

*December 19, 2016*

**Social studies**

I think A

*December 19, 2016*

**science**

do you go to connexus?

*December 19, 2016*

**ELA**

@Miss Sands Leave.

*December 19, 2016*

**algebra 2**

w gets small

*December 19, 2016*

**math**

the hour hand of a clock move from 1 to 4 0 clock. through how many degrees does it move

*December 18, 2016*

**Fractions**

Ian drinks 3/4 cups of water for every half-mile that he runs. In cups, how much water should Ian take along for a 31/2 mile run?

*December 18, 2016*

**Spanish**

1. Escribe esta frase como imperativo. Tú eres simpático. 2. Escribe esta frase en el imperativo. Me lo das.

*December 18, 2016*

**SUMMARY OF FINANCIAL TIME VALUE OF MONEY**

How much should you invest each month in order to have $800,000 if your rate of return is 5.3% compounded monthly and you want to achieve your goal in 40 years? If you deposit the amount you need to achieve your goal in 20 years, how much will your savings be worth after 10 ...

*December 18, 2016*

**Calculus**

A light on the ground moving at 0.5 m/s approaches a man standing 4 m from a wall. How fast is the tip of the man’s shadow moving when the light is 10 m from the wall?

*December 18, 2016*

**unitar**

A machine produces parts with lengths that are normally distributed with ï³ ï€½ 0.5 . A sample of 10 parts has a mean length of 75.92.

*December 18, 2016*

**Savings**

annuity

*December 17, 2016*

**soil mechanic**

2. A stratum of sand 2.5 m thick overlies a stratum of saturated clay 3 m thick. The water table is 1 m below the surface. For the sand, Gs = 2.65, e = 0.50 and for the clay Gs = 2.72, e = 1.1. Calculate the total and effective vertical stresses at depths of 1 m, 2.5 m and 5.5...

*December 17, 2016*

**Math**

The speed of a Garden snail is 50 meters per hour and that of the Cheetah is 120 kilometers per hour. Find the ratio of the speeds.

*December 17, 2016*

**Math - Coordinate Geometry**

The vertices of a quadrilateral are A(-2,3), B(5,4), C(4, -3) and D(-3, -4). Prove that ABCD is a rhombus. Find the area of ABCD. Formula to find length: d = ?(x2 - x1)^2 + (y2-y1)^2 Please show working out, thanks.

*December 17, 2016*

**math**

Find P(A?B).

*December 16, 2016*

**math**

A basket at a baby shower contains 8 bottles of pink nail polish numbered 1 through 8, and 9 bottles of red nail polish numbered 1 through 9. One bottle is drawn from the basket at random.

*December 16, 2016*

**Check Answer!! Conditional Probability**

A certain virus infects one in every 500 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have the virus. Let A be the event "the person is infected" and B be the ...

*December 16, 2016*

**math**

Zack orders a box of 80 sweaters manufactured from a factory. He needs to check the quality of 30% of the sweaters. Select all of the equations that Zack could use to find x, the number of sweaters he needs to check.

*December 16, 2016*

**Really Need Help Please**

Given probabilities: P(A) = 1/200 = 0.005 P(B) = 199/200 = 0.995 P(B|A) = 0.9 P(B|~A) = 0.1 Infer: P(~B|A) = 0.1 P(~B|~A) = 0.9 Then: a.) Find P(A|B) P(A|B) = P(A)P(B|A) = 0.005×0.9 = 0.0045 rounds to 0.0 b.) Find P(~A|~B) P(~A|~B) = P(~A)P(~B|~A) = 0.995×0.9 = 0....

*December 16, 2016*

**Really Need Help Please**

A certain virus infects one in every 200 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have the virus. (This 10% result is called a false positive.) Let A be the event &...

*December 16, 2016*

**American Government**

What would be the main benefit of a contested convention be to the other political party? A. a lack of momentum and unity in the contested candidate's party**** B. an inexperienced candidate taking the nomination C. a candidate the public disapproved of taking the ...

*December 16, 2016*

**Social Studies**

I need help with the multiple choice :((

*December 16, 2016*

**Health**

The answer is D. for #1 A. for #2 A. for #3 And idk da rest

*December 16, 2016*

**Math - Coordinate Geometry**

Area = 24?

*December 16, 2016*

**Math - Coordinate Geometry**

@MathMate would love that, thanks.

*December 16, 2016*

**Math - Coordinate Geometry**

The vertices of a quadrilateral are A(-2,3), B(5,4), C(4, -3) and D(-3, -4). Prove that ABCD is a rhombus. Find the area of ABCD. Please show working out, thanks.

*December 16, 2016*

**Math - Coordinate Geometry**

Find the equation of the line which passes through the point (6, -4) and is parallel to to the line 2x-3y+3=0. Please show working out as well, thanks.

*December 16, 2016*

**Check Work**

A poll was taken of 10,439 working adults aged 40-70 to determine their level of education. The participants were classified by sex and by level of education. The results are shown below. Education Level Male Female Total High School or Less 2023 3264 5287 Bachelor's ...

*December 16, 2016*

**Math**

Binomial distribution if mean 10 AND VARIANCE 9 find mide

*December 16, 2016*

**compute the probability that a person who tests po**

A certain disease has an incidence rate of 0.3%. If the false negative rate is 6% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the disease.

*December 16, 2016*

**Gauss-Jordan elimination**

Write the system of equations as an augmented matrix. Then solve for x and y. -3x+3y=-21 3x+2y=-4

*December 15, 2016*

**augmented matrix**

Write the system of equations as an augmented matrix. Then solve for x and y. 3x+y=-11 -9x-3y=33

*December 15, 2016*

**Sets**

Suppose Set B contains 69 elements and the total number elements in either Set A or Set B is 107. If the Sets A and B have 13 elements in common, how many elements are contained in set A?

*December 15, 2016*

**Algebra**

Can you please help with this question: The cheerleaders are having a bake sale to raise funds for new uniforms. The group sell cupcakes for $3 each and make a profit of $840 from the sales. If X represents the number of cupcakes the cheerleaders sold and their cooking ...

*December 15, 2016*

**Check Answer!!**

Compute the probability that a person who tests positive actually has the disease. A certain disease has an incidence rate of 0.3%. If the false negative rate is 4% and the false positive rate is 1%, compute the probability that a person who tests positive actually has the ...

*December 15, 2016*

**Math**

Emily has 5u game cards. John has 8/3 fewer cards than Emily. Find the average number of game cards that Emily and John have in all in terms of u.

*December 15, 2016*

**Math**

So do you round $60.89

*December 15, 2016*

**MATH**

Freddy paid w dollars for a camera and $120 for an additional camera lens. If the sales tax is 8%, how much did Freddy pay for the camera and lens, including the sales tax?

*December 15, 2016*

**math**

Emily has 5u game cards. John has 8/13 fewer game cards than Emily. Find the average number of game cards that Emily and John have in all in terms of u.

*December 15, 2016*

**math algebriac expressions**

Okay if it 2 tablespoons equal to fluid ounce how would you write it? yes i will tell my teacher tmorrow

*December 15, 2016*

**math algebriac expressions**

Please help this is wat the problem say

*December 15, 2016*

**math algebriac expressions**

If 6 tablespoons are equivalent to 1 fluid ounce, how many fluid ounces are in (10t-4) tablespoons?

*December 15, 2016*

**Chemistry**

A cube of solid reactant with sides of 1.00 cm² is submerged in a liquid and reacts to form a gas product at an initial rate of 20 mL/s. The solid-liquid interface is 6.0cm² of surface area. If you sliced this cube (like a block of cheese) into 10 slices, and then ...

*December 15, 2016*

**Science**

What do bone marrow and epidermis have in common. A.they are both sites of new cell information B.they both contain structures that assist the body in cooling down if overheating occurs. C.they both contain or are associated with sensory neorons D.they are both involved in ...

*December 15, 2016*

**Calculus**

Determine the open intervals on which the graph of f(x) = -7x^2 + 8x + 1 is concave downward or concave upward. The second derivative is just -14, so I don't know what to do with that.

*December 15, 2016*

**social studies**

ok thank you :)

*December 15, 2016*

**Math**

Bob is twice as old as chuck, and susie is 10 years younger than bob. If the sum of their age is 100 years, how old is susie?

*December 15, 2016*

**Maths**

The diagonals of a rhombus are in the ratio 3:4. If its perimeter is 40 cm, find the lengths of the sides and diagonals of the rhombus

*December 15, 2016*

**history**

What are the comparisons between herodotus and thucydides

*December 15, 2016*

**Math**

109 miles at 1.99 a gallon how much is amount of paid mileage

*December 15, 2016*

**math**

11 notebooks were added to w notebooks. 7 friends then shared the notebooks equally. Express the number of notebooks each person received in terms of w.

*December 14, 2016*