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. 531 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. 557 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. 651 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. 605 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. 467 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. 1,092 views
Simlifying Rational ExpressionsReduce to lowest terms, stating the restrictions on the variable. I really don't understand the
1. 1 answer
2. 713 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. 1,720 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. 1,641 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. 538 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. 505 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. 2,535 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. 791 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. 3,176 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. 589 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. 642 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. 562 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. 459 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. 631 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. 674 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. 714 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. 1,050 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. 848 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. 870 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. 565 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. 610 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. 780 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. 573 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. 1,078 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. 4,279 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. 3,108 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. 572 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. 1,433 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. 934 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. 3,045 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. 2,330 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. 2,371 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. 649 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. 723 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. 481 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. 600 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. 574 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. 5,540 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. 565 views
Reiny could you please check my Calculus post below, it says Calculus--Reiny.
1. 4 answers
2. 733 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. 814 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. 777 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. 590 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. 396 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. 1,361 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. 1,188 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. 473 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. 524 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. 644 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. 1,000 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. 562 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. 1,162 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. 503 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. 591 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. 657 views