Questions and answers by

-Untamed-

Questions (60)

1/a+1 + 1/a-1I solved this out by multiplying the (a+1) by (a-1) and multiplying (a-1) with (a+1) To get (a+1)(a-1) as the
1. 1 answer
2. 564 views
Simplify. State the nonpermissible values.(3t^2+3t-6/2t^2-2t-4)(4t^2+4t-24/3t^2+6t-9) This is the way I tried solving this:
1. 4 answers
2. 582 views
Calculus - Reiny, Friday, December 23, 2011 at 6:59pmI read that as (4a^2-1)/(4a^2-16) * (2-a)/(2a-1) , my brackets are
1. 2 answers
2. 670 views
Simplify. State the nonpermissible values.4a^2-1/4a^2-16*2-a/2a-1 This is what I did to try and solve it out:
1. 4 answers
2. 640 views
Determine the perimeter of the rectangle if x = 2*sqrt2cm. In simplest radical form.^ Don't get how to solve.
1. 1 answer
2. 481 views
Consider the rectangle with an area of 24x^3-54x^2-15x, with a side length of 6x^2-15x. Write and simplify an expression for the
1. 1 answer
2. 1,112 views
Simlifying Rational ExpressionsReduce to lowest terms, stating the restrictions on the variable. I really don't understand the
1. 1 answer
2. 750 views
The quadratic function f(x) = x^2 is transformed to g(x) = -2/3(x+3)^2 + 6 The point (6,36) on the graph of f is transformed to
1. 1 answer
2. 1,747 views
A photograph measuring 8 inches by 6 inches is surrounded by a mat. The mat has the same width on all sides of the photograph.
1. 3 answers
2. 1,660 views
y = 0.005x^2-0.801x+46.928^ Using that model above, how di I determine the cost per km to the nearest tenth of a cent, at a
1. 1 answer
2. 551 views
The roots of the equation 4x^2+4x-5 = 0 can be written in the form x = -1+-*SqrtA/2The value of A is, how exactly do I do this?
1. 2 answers
2. 521 views
The shortest side of a right angled triangle is 7cm less than the second shortest side. The sum of the squares of these two
1. 2 answers
2. 2,564 views
Determine for what value(s) of d the quadratic equation 5x^2-10x+d = 0 hasi) real and distinct roots ii)real and equal roots
1. 1 answer
2. 827 views
The graph of a quadratic function has vertex(3,-4) and passes through the point (4,1).Find the equation of the function in
1. 1 answer
2. 3,263 views
Solve the following quadratic equation(as exact values) using the quadratic formula.x^2-10x-15=0 I got 5+-2sqrt10/2. ^ Sorry
1. 4 answers
2. 627 views
The graph of a quadratic function has vertex(3,-4) and passes through the point (4,1).Find the equation of the function in
1. 0 answers
2. 667 views
x^3 + 8x^2 = 20xHow do I find the root of ^ that equation? 2x^2-10x+12 = 0 ^ I found that one by... 2(x-3)(x-2) x-3 = 0 x = 3
1. 1 answer
2. 590 views
f(x) = 5x^2 - 35xI converted ^ that equation to.. 5x^2-35x = 0 How do I go about from here to determine the zeros and the y
1. 2 answers
2. 479 views
x^3 + 8x^2 = 20xHow do I find the root of ^ that equation? 2x^2-10x+12 = 0 ^ I found that one by... 2(x-3)(x-2) x-3 = 0 x = 3
1. 3 answers
2. 649 views
2x(x+3) = 0Is there a way to solve that using the below methods? Substitute zero for f(x) and find the roots of the resulting
1. 2 answers
2. 708 views
Analyzing Quadratic Functionsdescribe how the graphs of the following functions relate to the graph of y=x^2. Could someone
1. 2 answers
2. 737 views
Find the Zeros of the following functionsf(x) = x/3 +5 ^ That one is layed out so differently I don't understand how to solve.
1. 1 answer
2. 1,084 views
Learning about quadratic functions and equations, and I am struggling. It's so easy for others to understand, but math is my
1. 1 answer
2. 882 views
Working on how to factor trinomials, and the method that works best for me is the criss cross method, so Ive sticked with it.
1. 11 answers
2. 906 views
In triangle PQR, angle P is 20 degres, angle R is 150 degrees, and QR is 6, the length of PQ is...?
1. 1 answer
2. 587 views
P (-V3/2, -1/2 and Q(1/2, V3/2 are two points on the unit circle. If an object rotates counterclockwise from point P to point Q,
1. 3 answers
2. 640 views
Find the exact values of the following.cos 270 degrees = 90 degrees, value = 0. Sin 180 degrees = 180-90 = 90 = 1, but its
1. 1 answer
2. 811 views
Determine the measure of A if 0 degrees is less or equal to angle A and if angle A is less or equal to 360 degrees.Tan A = 0
1. 1 answer
2. 615 views
Fine the measure of feta, to nearest degree, where 0 degrees is less or equal to feta, and feta is less or equal to 360 degrees.
1. 2 answers
2. 1,114 views
The point A(-3, -5) is one the terminal arm of an angle feta. Determine the exact expressions for the primary trigonmetric
1. 1 answer
2. 4,311 views
A rectangle has a diagonal of 8cm. The diagonal creates a 60 degrees angle at the base of the rectangle.Write an exact
1. 3 answers
2. 3,139 views
Determine two angels between 0 degrees and 360 degrees that have a sine ratio of -1/2. Would that be 30 and 330?
1. 1 answer
2. 597 views
Ionic bonds and covalent bonds:Ionic Bond(s) for: K&S -> K2S N&Be -> Be3N2 Al&P -> AlP Covalent Bond(s) for: C&F -> CF4 S&O ->
1. 1 answer
2. 1,453 views
Find the measure of feta, to the nearest degree where o degrees is less than feta which is less than 360 degrees.6 sin feta = -1
1. 1 answer
2. 974 views
A stone falls freely from rest for 8.0s.A. Calculate the stone's velocity after 8.0s. V2-V1+at V2 = (0) = 9.8(8.0) V2 = 78.4m/s
1. 1 answer
2. 3,065 views
If you drop a golf ball, how far does it fall in 0.5s?Is the correct formula to use?: D = V1 + t + 1/2at^2. But the problem is
1. 3 answers
2. 2,352 views
A brick falls freely from a high scaffold.A. What is its velocity after 4.0s? B. How far does the brick fall during the first
1. 1 answer
2. 2,398 views
A car is travelling on a highwayCan it have a negative velocity & a positive acceleration at the same time? Can the car change d
1. 1 answer
2. 682 views
A car is travelling on a highwayCan it have a negative velocity & a positive acceleration at the same time? Can the car change d
1. 1 answer
2. 750 views
2^3V4(2^3V54-^3Vx) is equal to 16, then x is equal to... I simplified the 2^3V4 and got 64, and just got stuck.
1. 1 answer
2. 512 views
5-3�ã2 multiplied by its conjugate is...Its supposed to be 7, but I don't get how to do this, cause now im totally confused, i
1. 1 answer
2. 629 views
Im also doing this problem wrong...2^3V4(2^3V54-^3Vx) is equal to 16, then x is equal to... I simplified the 2^3V4 and got 64,
1. 0 answers
2. 597 views
A square is inscribed in a circle. If the area of the circle is 144(pi)cm*squared* --sorry the square root thing isnt showing
1. 1 answer
2. 5,570 views
Dont know if the radicals will show up..2�ã3(�ã243-2)-�ã2(5+7�ã2) Can be expanded and simplified to the form p + q�ã2
1. 2 answers
2. 599 views
Reiny could you please check my Calculus post below, it says Calculus--Reiny.
1. 4 answers
2. 770 views
V = RadicalThe expression: V2(V5-12V3)-V3(V8-2V30) can be written in simplest form aVb-cVd, where a, b, c ,d are all positive
1. 3 answers
2. 852 views
About rationalizing denominator, is it true that you can't always multiply by the same square root denominator to get a perfect
1. 1 answer
2. 796 views
I am very confused on how to rationalize a denominator, it just gets harder and harder.*will be using the V symbol again as a
1. 1 answer
2. 619 views
For the radical symbol, I'll just make a v.3V240/V108 V240 = 4V15 V108 = 6V3 4V15/6V3 = ??? I am able to divide 3 into 15, and I
1. 1 answer
2. 413 views
A student forgot to measure the mass of an empty 100mL beaker before adding about 2g of a chemical to it, and decided to simply
1. 4 answers
2. 1,394 views
You dissolved a solute in some water to make a solution. If you had needed to know how much solute dissolved, how could you have
1. 2 answers
2. 1,222 views
�ã6(2�ã6 - �ã5)How do you get 12-�ã30? I keep getting a way different answer:\ Btw not sure if the radicals will show
1. 2 answers
2. 505 views
�ã27 + �ã12 - �ã32 - �ã8�ã27 = �ã3*3*3 = 3�ã3 �ã12 = �ã2*2*3 = 2�ã3 �ã32 = �ã2*2*2*2*2 = 4�ã2 �ã8 =
1. 3 answers
2. 553 views
Use the Pythaogorean Theorem to determine the exact length of AB.Express the answer as A) an exact value in simplest mixed
1. 1 answer
2. 671 views
State whether the following are true or false.The square roots of 36 are + and - 6. I wrote down false for this cause I thought
1. 2 answers
2. 1,026 views
Could you check to see if Ive done this right?h t t p : // imageshack . us/photo/my-images/269/vectoriz . j p g /
1. 2 answers
2. 592 views
I already drew a vector diagram for 50m [E] + 32m [W]The way I drew it: 5cm going East, then starting from the end point, 3.2 cm
1. 1 answer
2. 1,181 views
A jet travels from Vancouver to Calgary for 1000 km, then turns [N] and travels another 200km toward Edmonton. Draw a scale
1. 0 answers
2. 529 views
A government bond is bought for $5000 on June 1, 2010. The value of the bond increases each year by 3.9% of the previous year's
1. 2 answers
2. 620 views
I keep getting confused on this stuff.Alan invests $2500 in a 5 year Government bond paying interest at 3.7% per annum
1. 1 answer
2. 691 views