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230604 Questions
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85
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factoring
We are looking to factor 23x^2 + kx - 5 + x^2 - 3. Some values of k allow us to factor it as a product of linear binomials with integer coefficients. what are all such values of k?
Guest
Dec 6, 2022
0
87
0
binomials
For nonnnegative integers a and b, where a >= 2 and b >= 2, simplify
binom{a + b}{2} + binom{2a + b}{2} + binom{a + 2b}{2} - binom{a - b}{2}
Guest
Dec 6, 2022
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88
0
binomials
Fill in the blanks to make the equation true (Each blank should contain a positive integer.)
\binom{n}{k} = \binom{n - 2}{k} + \binom{n - 2}{k - 1} + \binom{n - 1}{k} + \binom{n - 1}{k - 1} + \binom{n}{k - 1} + \binom{n}{k +
read more ..
Guest
Dec 6, 2022
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85
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binomials
Simplify binom{100}{50}/binom{200}{51}*binom{100}{51}/binom{200}{50}
Guest
Dec 6, 2022
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94
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Identity
For a certain function f(n), the identity
(2n)/n - (2n)/(n + 1) = f(n) (2n)/n
for all nonnegative integers n. Find f(n).
Guest
Dec 6, 2022
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82
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Algebra question
Let c be a real number, and consider the system of quadratic equations
y = 6x^2 - 9x + c - x^2 - x
y = 5x^2 - 3x + x^2 + 2x
For which values of c does this system have:
(a) Exactly one real solution (x,y)
(b) More than
read more ..
Guest
Dec 6, 2022
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82
0
need help
Let a and b be real numbers such that a ++ b = 4 and a^4 + b^4 = 16.
(a) Find all possible values of ab
(b) Find all possible values of a + b
(c) Find all possible values of a and b
Guest
Dec 6, 2022
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101
0
How to complete this guys
590 * 0.28 / 31(2- 1/0.07)
Guest
Dec 6, 2022
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96
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Algebra
Let's take a look at (x + y)^2 (x - y)^2 and (x^2 + y^2)(x^2 - y^2). While Beeker believes that these two expressions are equal for all real numbers x and y Clod believes they are not! Let's get to the bottom of this!
a) Evaluate (x + y)^2 (x -
read more ..
Guest
Dec 6, 2022
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89
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help algebra
Solve for y if 9^y = 3*6*27*4*81*10*2
Guest
Dec 6, 2022
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88
0
help algebra
In November's Math Meet, the Little Monsters of Beast Academy solved 1/3 of the problems. In March's Math Meet, they solved 2/7 of the problems. (There might be different numbers of problems asked in November and March.)
In total, the Little Monsters
read more ..
Guest
Dec 6, 2022
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114
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A car uses 1 2/5 gallons of gasoline to travel 50 3/4 miles. How far can the car travel, in miles, on 1 gallon of gasoline?
A car uses 1 2/5 gallons of gasoline to travel 50 3/4 miles. How far can the car travel, in miles, on 1 gallon of gasoline?
Guest
Dec 6, 2022
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87
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Please help this is urgent
Hello I'm looking for help on this geometry problem. Please don't tell me the answer, just how you would solve it. This is urgent, so help would be greatly appreciated :D
http://file:///Users/dankvader/Desktop/WechatIMG918.jpeg
Guest
Dec 6, 2022
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92
0
Geometry
In the diagram below, D is a point on segment CE such that segments AD and BE are parellel and point A is not on segment BC. Line segments AD and BC intersect at point P.
If angle CAD = 67 degrees, then what is angle
read more ..
Guest
Dec 6, 2022
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118
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+8
Graph the solution to the inequality. -9√/2x+1> -18 Drag the symbol to the correct location on the number line to graph the solution.
Graph the solution to the inequality.
-9√/2x+1> -18
Drag the symbol to the correct location on the number line to graph the solution.
babyb
Dec 6, 2022
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159
1
+8
pleaseeee help
What two rational expressions sum to 2x-2/x^2-x-12
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babyb
Dec 6, 2022
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92
0
Darren takes a covid test. Unfortunately, he bought it from Laramie so it's not very reliable.
Darren takes a covid test. Unfortunately, he bought it from Laramie so it's not very reliable. It only has a 60% chance of showing the correct result. Suppose 1% of the population has covid. If the test is positive, what is the probability Darren really
read more ..
Guest
Dec 6, 2022
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105
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3 friends Xymen, Yelena, and Zara are having a 3-way paintball duel. Xymen is a poor shot, hitting his target with a probability of 1/3.
3 friends Xymen, Yelena, and Zara are having a 3-way paintball duel. Xymen is a poor shot, hitting his target with a probability of 1/3. Yelena is very accurate, hitting her target 2/3 of the time. Zara is a marksman, hitting her target every single time.
read more ..
Guest
Dec 6, 2022
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109
1
tangents
The two circles below are externally tangent. A common external tangent intersects line PQ at R. Find QR.
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Guest
Dec 6, 2022
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96
0
Algebra
Carissa the chessplayer is a very, very slow walker. In fact, she walks at 100 meters per hour when walking uphill, 180 meters per hour when walking across flat ground, and 250 meters per hour when walking downhill. One day,
read more ..
Guest
Dec 6, 2022
0
113
1
help inequality
(a) Prove that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)^2 (c^4 + d^4)(e^4 + f^4) >= 32abcdef.
(b) Prove that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)(c^2 + d^2)(e^2 +
read more ..
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Guest
Dec 6, 2022
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132
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+334
Im not sure
It was like a quadratic equation, and then you take the derivative of it. And then you get some sort of answer? I'm not sure but it was relating calculus to algebra.
hipie
Dec 6, 2022
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148
1
quadratic
Let a and b be the roots of the quadratic 2x^2 - 8x + 7 = x^2 - 5x + 3. Compute a^3*b + a*b^3.
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Guest
Dec 6, 2022
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