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Post New Question
All Questions
+0
236531 Questions
+1
328
5
+27
Compute the value
Compute the value of
1-2+3-4+...+2019-2020+2021
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IcanhelpandIneedhelp
May 12, 2022
0
169
0
Please answer this
https://web2.0calc.com/questions/need-the-workings-thx
Guest
May 12, 2022
0
243
1
Thanks
A garment factory sewed only shirts and pants. In April, 80% of the garment sewed were shirts and the rest were pants. In May, the factory increased their production by sewing an additional 840 shirts and pants. The number of shirts sewed in May increased
read more ..
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Guest
May 12, 2022
0
250
2
percent
A store purchased a coffee table and makred it up for 125% from the original cost of 20 dollars. A week later, the store placed the coffee table on sale for 40%. What was the discount price?
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Guest
May 12, 2022
0
492
1
Help! Super hard geo prob!
Points A, B, and c are given in the coordinate plane. There exists a point Q and a constant k such that for any point P,
PA^2 + PB^2+PC^2=3PQ^2 + k
If A = (4, -1), B = (-3, 1), and C = (5, -3), then find the constant k.
read more ..
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Guest
May 12, 2022
0
186
0
Parabola
Find the equation of a parabola whose vertex is at (−1, 7), whose axis of symmetry is x = −, and whose y-intercept is (0, ). Write your answer in vertex form.
Guest
May 12, 2022
+1
257
0
+287
Please help
Any help would be appreciated. Thanks in advance
Mathisgood
May 12, 2022
0
227
1
Quadratic
A creature on the moon throws a rock off a cliff. The height of the rock above the surface of the moon, in meters, t seconds after it is thrown is given by h(t)=-t^2 +8t+10. When does the rock hit the surface of the moon?
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Guest
May 12, 2022
0
239
1
Graphing
The graph y = f(x) of is shown in red below. Find f(2). (Assume grid lines are spaced 1 unit apart.)
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Guest
May 12, 2022
0
176
0
Graphing question
The graph of y = f(x) is a parabola whose vertex is at (1,-2). The graph of y = f(x + 8) is also a parabola. Where is the vertex of the graph of y = f(x)? Write your answer as an ordered pair.
Guest
May 12, 2022
0
240
1
Quadratic
What is the minimum value of 5x^2 - 20x + 1357 + 3x^2 + 4x?
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Guest
May 12, 2022
0
255
1
Let be the ordered pairs of real numbers such that the polynomial has exactly one distinct real root and no nonreal complex roots. Find .
Let be the ordered pairs of real numbers such that the polynomial
has exactly one distinct real root and no nonreal complex roots. Find .
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Guest
May 12, 2022
0
283
1
Binomial
What number goes in the box so that the quadratic is the square of a binomial? 9x^2 + 6x + 8x - 5x^2 + ___
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Guest
May 12, 2022
0
296
1
Number Theory
Given that 13^(-1) = 29 (mod 47), find ^(-1) (mod 47), as a residue modulo 47. (Give a number between 0 and 46, inclusive.)
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Guest
May 12, 2022
0
283
1
Range
The range of the function g(x) = 2/(2 + 4x^2 + 5 + 9x^2) can be written as an interval (a,b]. What is a+b?
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Guest
May 12, 2022
0
293
1
Algebra
Evaluate sqrt(9/4) + 9/4 + (9/4)^2.
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Guest
May 12, 2022
0
292
1
Piecewise function
Let
f(x) = -x-3 if x <= -7
f(x) = 2x + 1 if x > -7
Find the sum of all values of $x$ such that f(x) = 0.
read more ..
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Guest
May 12, 2022
0
298
1
Floor function
If y>0, find the range of all possible values of y such that y*floor(y) = 42. Express your answer using interval notation.
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Guest
May 12, 2022
0
287
1
-3(x-3)>5-5x
-3(x-3)>5-5x
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Guest
May 12, 2022
0
420
5
+40
What is the meaning of this idioms or adages?
long in the tooth
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CherryBlossom
May 12, 2022
0
289
1
Domain
If f(x) = 2 - x^(1/2) and g(x) = x^2 - 9, what is the domain of g(x)/f(x)?
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Guest
May 12, 2022
0
297
1
What multiples to -18 but adds to 3
What multiples to -18 but adds to 3
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Guest
May 12, 2022
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