ndcruz

How many square feet of cement would be needed for a 7 foot wide continual sidewalk around the outside edge of a 60 foot by 90 foot corner lot? (a)1050 sq ft (b)1099 sq ft ©420 sq ft (d)630 sq ft

i figured it out. thanks

Look at Johno3030's answer its 2/19 not 2/9, genius! :mad:

A class of 40 sports students includes 23 who play the tennis, 26 who play the baseball and 15 who play both the tennis and baseball. How many students in the class play neither sport?

Interesting.. I am pretty sure you might have made a mistake.. Here is the answer I got: http://img76.imageshack.us/img76/7947/ansrd5.png

Consider 2 dice (fair). What is the probability that a 7 or an 11 will turn out?

Bose, i got [-4, infinity) i think the -4 is inclusive, hence the square bracket rather than the regular parenthesis

Parents have set up a sinking fund in order to have $120,000 in 15 years for their children’s college education. How much should be paid semiannually into an account paying 6.8% compounded semiannually?

Aren't there 26 black cards in a deck?

g(x)=x^2-8x+12 What is the Range of this Function?

An experiment consists of rolling two fair dice and adding the dots on the two sides facing up. Using the sample space shown in Figure below and assuming each sample event is as likely as any other, find the probability of the sum of the dots indicated. --> Sum is not 2, 4, or 6. http://img146.imageshack.us/img146/1300/die1ic6.gif http://img291.imageshack.us/img291/2065/die2mh9.jpg

So basically, P(King) + P(Heart) = P(total)

A card is drawn at random from a standard 52-card deck. Events G and H are G = the drawn card is black H = the drawn card is divisible by 3 (face cards are not valued). (A) Find P(H | G). (B) Test H and G for independence.

A single card is drawn from a standard 52-card deck. Calculate the probability of even and odds for each event. A king or a heart is drawn.

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A seller had to pay a lender 4 points to procure a 9% loan for the buyer of the property. THis payment of points would increase the lender's effective yield to: A) 13% B) 9.4% C) 9.5% D) 9.7%

0 is an integer by definition, however it is neither positive nor negative. ;)

Measurements of a driveway are 24'x36'. How much would it cost to replace the driveway if a concrete slab 4" thick cost $15.00 a cubic yard to install and the cost of the labor amounted to $272.00 over and above the cost of the concrete?

http://img507.imageshack.us/img507/9597/sqrtzmv8.png You also know that x is negative, because in the ORGINAL question it says IF x

√(-x│x│) = ? Since x √(-x│x│) = √[(-x][-x)] = √(x^2) Now, √(x^2) = |x|. That is, √(x^2) = x if x ≥ 0, or √(x^2) = -x if x the answer is -x, choice A.

I got it from the Official Question as shown below: http://img143.imageshack.us/img143/4189/oqvr1.png I think you just had a typo in the original price $3.59, rather than $3.95.

H + C = 3.95 H + F = 4.4 F = 2C Substituting F = 2C in the second equation 1) H+2C= 4.4 2) H+ C = 3.95 (1) - (2) yeids C = 4.4-3.95 = 0.45 F = 2C = $0.9 Answer = E

A) f(x) = 1 - x f(x) = f(1-x) => 1 - x = 1 - (1 - x) => 1 - x = 1 - 1 + x => 1 - x = x (which is wrong). So they don't satisfy. B) f(x) = 1 – x2 f(x) = f(1 - x) => 1 - x2 = 1 - (1 - x2) => 1 - x2 = 1 - 1 + x2 => 1 - x2 = x2 (which is wrong) So they don't satisfy. C) f(x) = x2 – (1 – x)2 f(x) = f(1 - x) => x2 - (1 - x)2 = (1 - x)2 - (1 - (1 - x))2 => x2 - 1 - x2 + 2x = 1 + x2 - 2x - (x)2 => 2x - 1 = 1 - 2x (which is wrong) So they don't satisfy. D) f(x) = x2(1 – x)2 f(x) = f(1 - x) => x2(1 - x)2 = (1 - x)2 (1 - (1 - x))2 => x2(1 - x)2 = (1 - x)2(1 - 1 + x)2 => x2(1 - x)2 = (1 - x)2 x2 (they match) So this satifies. E) f(x) = x / 1-x f(x) = f(1 - x) => x / (1 - x) = (1 - x) / (1 - 1 + x) => x / (1 - x) = (1 - x)/x (which is wrong) so this doesn't satisfy. Only option D satisfies.

http://img177.imageshack.us/img177/3913/conjro7.png

http://img72.imageshack.us/img72/4544/solnut9.png