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Post New Question
All Questions
+0
234773 Questions
0
461
1
+197
Find the sum of the coefficients in the polynomial $-2(x^7 - x^4 + 3x^2 - 5) + 4(x^3 + 2x) - 3(x^5 - 4)$.
pls help
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icecreamlover
Aug 23, 2021
0
224
0
Forgot to answer
https://web2.0calc.com/questions/need-help_50542
Guest
Aug 23, 2021
0
259
1
word problem
A garden table and a bench cost 685 dollars combined. The garden table costs 35 dollars more than the bench. What is the cost of the bench?
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Guest
Aug 23, 2021
0
634
1
+197
If $f(x) = 2x^5 - x^4 + x^2 - 3$, and $g(x)$ is a polynomial such that the degree of $f(x) + g(x)$ is 3, then what is the degree of $g(x)$?
please help
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icecreamlover
Aug 23, 2021
0
405
2
Equation
What is the sum of all possible solutions of $\frac{9x}{13}+\frac{13}{9x}=\frac{250}{117x} + \frac{3x}{2}$?
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Guest
Aug 23, 2021
0
265
1
Quadratic Formula
Each solution to x^2 + 5x + 8 = 3x + 2 can be written in the form x = a + bi, where a and b are real numbers. What is a + b^2?
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Guest
Aug 23, 2021
0
379
3
+176
Advanced math
Alan is times as heavy as Binod. Binod is 7 kg lighter than Glen. The total mass of the 3 boys is 142 kg. What is Glen's mass?
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Whayousayy
Aug 23, 2021
0
320
2
+176
Pls explain
A bookstore had 36 more hardcover books than paperbacks at first. The number of hardcover books sold was equal to 3/4 of the number of paperbacks at first. The bookstore also sold a number of paperbacks that was equal to 1/2 of the number of hardcover books
read more ..
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Whayousayy
Aug 23, 2021
0
410
1
+176
Not sure how to solve
James had a box of pens. He removed 1/6 of the pens and then replaced 4 pens. Next, he removed 1/4 of the remaining pens and then replaced 3 pens. Finally, he removed 1/3 of the pens that were left and replaced 2 pens. He had 46 pens in the end. How many
read more ..
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Whayousayy
Aug 23, 2021
0
200
0
help plz
On the graph of y=(x+2)^2-100, how many points are there whose coordinates are both negative integers?
Guest
Aug 23, 2021
0
218
0
help function
Suppose that a and b are positive real numbers, and let
f(x) = ax if x <= -4,
f(x) = bx if x > -4.
read more ..
Guest
Aug 23, 2021
0
264
1
Algebra
Simplify and rationalize the denominator:
$$\frac{1}{1+ \frac{1}{\sqrt{2}+1}}.$$
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Guest
Aug 23, 2021
0
314
0
+120
Forgot to answer this
https://web2.0calc.com/questions/teachers-can-explain-how-to-do-this-thanks
florianmanteyw
Aug 23, 2021
0
417
1
+120
help
Benjamin had 66 more red cards than blue cards at first. He gave away an equal number of red cards and blue cards. He now had twice as many red cards as blue cards. How many blue cards did Benjamin have at first?
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florianmanteyw
Aug 23, 2021
0
189
0
Forgot to answer this
https://web2.0calc.com/questions/pls-help-thanks-in-advance
Guest
Aug 23, 2021
0
352
2
Can someone help me with this thx
Marion had some money. She spent $210 on a watch and 1/10 of the remaining on a bracelet. If she had 3/8 of the original sum of money left, how much money did she have at first?
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Guest
Aug 23, 2021
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221
0
i cannot get this answer right can someone explain it to me
conver r=2/7sin theata-cos theata to rectangular form
then enter your anwer in slope intercept form
Guest
Aug 23, 2021
0
256
1
some helppppp!!!!!
someone plz helpppp meeeee i beg
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Guest
Aug 23, 2021
0
430
1
+68
is the simplified radical of sqrt 52 2sqrt13
what is the simplified radical of sqrt 52
i got 2sqrt13 is that right
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lendsey
Aug 23, 2021
0
301
0
+68
can someone check this plz
what is the polar form of the equation
(x+2)^2+y^2=4
i got r^2=4r sin theata
read more ..
lendsey
Aug 23, 2021
0
376
1
+68
Consider the infinite series
Consider the infinite series defined by
∞ ∑ (2n! /2^(2n))
n=1
(a) What is the value of r from the ratio test?
read more ..
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lendsey
Aug 23, 2021
0
348
1
Polynomials
If f(x) and g(x) are polynomials such that f(x) + g(x) = -2 + x, then what is g(x) if f(x) = x^3 - 2x - 2 - 4x^2 + 8x - 7?
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Guest
Aug 23, 2021
0
202
0
Algebra
The quadratic 2x^2-3x+21 has two imaginary roots. What is the sum of the squares of these roots? Express your answer as a decimal rounded to the nearest hundredth.
Guest
Aug 23, 2021
0
329
1
help algebra
If (2x+5)(x-3)=14 + x^2 - 7x, find the sum of the possible values of $x$.
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Guest
Aug 23, 2021
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