Math Algebra Quiz

Problem	Answer	Hint
Paul walked to school at 6 km/h and rode home from school at a speed 6 times as fast. If his total traveling time was 56 min., how many minutes did he spend walking?		No hint
Simplify: 9aˆ2-121bˆ2		The ˆ is a power symbol. If the answer is a square, you have to just write the equation twice in parenthesis
Solve: 4yˆ4-4yˆ3+yˆ2=0		For fractions write the decimal. Separate the answers with commas
Solve: aˆ3=81a		For a negative use the minus sign
-5-(-I-12I)+(-12)-(-5)		I means absolute value
2x-3/2xˆ3-11xˆ2+24x-18		/ means divide
Factor: 3xˆ3-3xˆ2-60x		Write the answer exactly as it looks on paper.
The length of a rectangle is 3 cm. less than twice the width. If the area of the rectangle is 35 cmˆ2, find the dimensions.		No periods after the cm and you can just put x instead of by.

Problem	Answer	Hint
Graphing: (-3, 4), (1, 2) Find the slope.		Write the decimal, its a nice decimal too.
IzI+10=28		Again I is an absolute value sign. z is lowercase and separate answers by commas.
Concrete can be made by mixing cement, sand and gravel in a ratio 3:6:8. How much gravel is needed to make 850m of concrete?		Its gravel not the other ingredients.
A mass of 25 g stretches a spring 10 cm. If the distance a spring is stretched is directly proportional to the mass, what mass will stretch the spring 22 cm?		No hint
A two-digit number is four times the sum of its digits. The tens digit is 3 less than the units digits. What is the number?		This one is easy
The numerator equals the sum of the two digits in the denominator. The value of the fraction is 1/4. When both numerator and denominator are increased by 3, the resulting fraction		To put a division symbol, use : not slash or some other means
(2+5)-3ˆ2+4/2+5x3-10		Think carefully about this one.

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Math Algebra Quiz

by Sebl11

Created May 27, 2010 in Just For Fun
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	bosox123:	May 27th, 2010 at 18:10 GMT	2 points
	here are the problems whose answers were wrong (Left Column): 1, 3,8 (Right Column): 10, 11, 12 (you did not finish it), and the last one has a random 5x3 in it that makes no sense.

	erianta:	May 27th, 2010 at 18:11 GMT	2 points
	Terrible quiz. The mass should be 55 g, not 8.8. The answer to the question about numerator and denominator increased by 3 could be 6:15, 9:27, 12:39, or 15:51, but definitely not 6:24. 9a^2 - 121b^2 is (9a + 11b) * (9a - 11b). The answer for z is -18, 18. And those are just the easy ones you missed.

	XCBoss:	May 27th, 2010 at 18:47 GMT	2 points
	Yeah Seb u kind of messed up a lot. One of them you didn't even finish, the absolute value problem where you have to solve for z is blatantly false, the 9a^2-121b^2 one is wrong, and the one about the spring is wrong.

	eliporter:	May 27th, 2010 at 21:05 GMT	1 point
	sorry sebby, but its 55 grams.

	Sebl11:	May 27th, 2010 at 22:33 GMT	1 point
	Alright, I changed it to 55 grams, sorry I made that mistake and for the others, but erianta, you are completely wrong. It cannot be 9:27 or any of the others because the base fraction has to equal one fourth. Also 9a multiplied by 9a equals 81aˆ2 and not 9aˆ2 so I got some questions right.

	joerob123:	May 27th, 2010 at 22:39 GMT	-1 points
	calm down guys, great quiz seb

	bosox123:	May 27th, 2010 at 22:53 GMT	3 points
	Still 2 problems wrong: factor: 3xˆ3-3xˆ2-60x 3x(x+5)(x-4) Write the answer exactly as it looks on paper. Sign mistake here its (x-5)(x+4) 2x-3/2xˆ3-11xˆ2+24x-18 xˆ2+4x+6 / means divide Factor these out it does not come anywhere close to the answer