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Post New Question
All Questions
+0
234777 Questions
0
393
1
help plz
The sum of three positive integers is 42. The smallest integer is five less than the middle integer. The middle integer is two less than the greatest integer. Define a variable, write an equation and solve to find the three integers.
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Guest
Feb 24, 2021
0
438
1
+501
rationalizing denominators
Suppose that a, b, and c are real numbers such that $\frac{a}{b} = \frac{\sqrt{10}}{\sqrt{21}}$ and $\frac{b}{c} = \frac{\sqrt{135}}{\sqrt{8}}$. Find $\frac{a}{c}$. Completely simplify and rationalize the denominator.
read more ..
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ellapow
Feb 24, 2021
+1
430
5
pls show steps
pls show steps
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Guest
Feb 24, 2021
0
473
3
factor pls show steps
Show work
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Guest
Feb 24, 2021
0
476
2
(5+8÷4×3)2−7
(5+8÷4×3)2−7
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Guest
Feb 24, 2021
0
605
1
write -7 + 8x^2 - 4x
write -7 + 8x^2 - 4x in descending order
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Guest
Feb 24, 2021
0
560
2
Let be a positive integer and let be the number of positive integers less than that are invertible modulo
Let be a positive integer and let be the number of positive integers less than that are invertible modulo . If (mod 13), then what is the remainder when is divided by 13?
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Guest
Feb 24, 2021
+2
811
1
+147
Given that the absolute value of the difference of the two roots of $ax^2 + 5x - 3 = 0$ is $\frac{\sqrt{61}}{3}$, and a is positive, what
Given that the absolute value of the difference of the two roots of $ax^2 + 5x - 3 = 0$ is $\frac{\sqrt{61}}{3}$, and a is positive, what is the value of a?
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powclaire
Feb 24, 2021
-2
546
7
+206
rationalizing denominators
Find $\displaystyle{ \frac{2}{1 + 2\sqrt{3}} + \frac{3}{2 - \sqrt{3}}}$, and write your answer in the form $\displaystyle \frac{A + B\sqrt{3}}{C}$, with the fraction in lowest terms and $A > 0$. What is $A+B+C$?
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oliviapow06
Feb 24, 2021
0
361
1
NEED HELP ASAP PLS
Show that the triangle with vertices 2sqrt3, -sqrt3+3i, and -sqrt3-3i is equilateral. (Without graphing it).
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Guest
Feb 24, 2021
0
451
1
+206
advanced system of equations
Real numbers a and b satisfy the equations $3^a=81^{b+2}$ and $125^b=5^{a-3}$. What is ab?
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oliviapow06
Feb 24, 2021
0
475
1
rhombus
For the rhombus above, find the value of x. (leave decimal answer in the hundredths place)
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Guest
Feb 24, 2021
0
531
2
+20
Please help help
In 1990 the population of Canada was approximately 26.6 million. The population projection for 2015 is approximately 38.4 million. If the projection is based on a geometric sequence, what would be the annual growth rate?
What assumptions do
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Nimrod
Feb 24, 2021
0
446
1
help me please!!! percentages!
A saleswoman earns 4% commission on all the merchandise that she sells. Last month she sold $3000 worth of merchandise. How much commission (in dollars) did she earn last month?
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Guest
Feb 24, 2021
0
272
0
help plsss
https://web2.0calc.com/questions/please-help-urgent_23
Guest
Feb 24, 2021
0
1090
3
+586
Combinatorics
In the following grid, there are paths of length 14 from A to B, where each step goes right or up.
(a)Find the number of these paths that pass through edge NO.
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xXxTenTacion
Feb 24, 2021
+1
431
1
+130
Polynomials
Find all possible values of a, if the equations ax^2+5x+1=0 has two different real roots
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HelpPls123abc
Feb 24, 2021
0
373
1
parallelogram
For the Parallelogram above, find the value of z. (Type in a decimalanswer only. Keep the answer in the tenths place)
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Guest
Feb 24, 2021
-1
477
2
+206
rationalizing denominators
Simplify: $\frac{1}{\sqrt{2}+\frac{1}{\sqrt{8}+\sqrt{200}+\frac{1}{\sqrt{18}}}}$.
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oliviapow06
Feb 24, 2021
+1
433
1
+501
Quadratic Formula/Discriminant
There are two pairs $(x,y)$ of real numbers that satisfy the equation $x+y = 3xy = 4$. Given that the solutions $x$ are in the form $x = \frac{a \pm b\sqrt{c}}{d}$ where a, b, c, and d are positive integers and
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ellapow
Feb 24, 2021
0
512
2
+147
Advanced System of Equations
The sum of three numbers a, b, and c is 99. If we increase a by 6, decrease b by 6 and multiply c by 5, the three resulting numbers are equal. What is the value of b?
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powclaire
Feb 24, 2021
0
537
2
+132
PLEASE HELP URGENT
A, B and C are three points on a plane such that AB = BC = 1 and CA = Draw three circles whose diameters are and respectively. The area of the region included in all three circles (the grey region below) is in simplest
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macar0ni
Feb 24, 2021
-2
433
4
HELP!!!
This is about Volume of Cylinders.
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Guest
Feb 24, 2021
0
492
2
solve for z
Find all values of z such that z^4 - 4z^2 +4 = 0.
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Guest
Feb 24, 2021
0
272
0
kinda weird question
y=31-5x.
Consider the system of equations.
5x+y=31,
-3x+4y=-37
read more ..
Guest
Feb 24, 2021
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