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All Questions
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184524 Questions
0
126
1
investing question
An engineer invested a portion of $15,000 in a 7% annual simple interest account and the remainder in a 6.5% annual simple interest government bond. The amount of interest earned for one year was $1020. How much was invested in each account?
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Guest
Feb 22, 2020
0
132
1
please help
Tickets to the Valentines dance cost three dollars per person or $5 per couple. If $475 worth of tickets were sold in 180 people attended to the dance how many couples were there?
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Guest
Feb 22, 2020
0
223
2
I am stuck on this.
Hi guys this is my first time using the forums and I need help on 1 question:
Let $a$ and $b$ be the roots of $7x^2 - x - 3 = 0$. Find [(1 + a + a^2 + a^3 + ....)(1 + b + b^2 + b^3 + ....]
I know to start the problem you somehow rewrite
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Guest
Feb 22, 2020
0
135
1
HELP!!!!
Let A and B be constants such that the graphs of the lines x + 5y = 7 and 15x + Ay = B are perpendicular and intersect at (-8,3). Enter the ordered pair (A,B).
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Guest
Feb 22, 2020
0
145
0
If I am 5 feet tall standing 3 feet away from a mirror looking at a tree that I can barely see the top of and the base of the tree is 9 feet
If I am 5 feet tall standing 3 feet away from a mirror looking at a tree that I can barely see the top of and the base of the tree is 9 feet away from the mirror how tall is the tree?
Guest
Feb 22, 2020
0
209
2
+9
Midpoint hw
I just need help getting started, please. Sorry for the formatting
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Josh1222
Feb 22, 2020
-1
224
2
+172
Math
Find the number of ways of distributing 4 different balls among 4 identical boxes.
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Forumofweb2.0cal
Feb 22, 2020
0
130
1
algebra
An animal reserve has 22,000 elk. The population is increasing at a rate of 12% per year how long will it take for the population to reach 88,000
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Guest
Feb 22, 2020
0
133
1
help
Flying against the wind, an airplane travels 3950 kilometers in 5 hours. Flying with the wind, the same plane travels 3030 kilometers in 3 hours. What is the rate of the plane in still air and what is the rate of the wind?
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Guest
Feb 22, 2020
0
170
1
help
The 4th term of an arithmetic sequence is 1. The 10th term of the same sequence is -2. Which is an explicit formula for this sequence?
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Guest
Feb 22, 2020
0
124
1
Help!
A positive divisor d of is chosen uniformly at random. What is the probability that d is a perfect cube?
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Guest
Feb 22, 2020
0
119
1
Counting Help!
A number is called swappy if it is not a palindrome, but swapping two of its digits produces a six-digit palindrome. For example, the number 813381 is swappy, because we can swap the last two digits to get 813318, which is a palindrome.
How
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Guest
Feb 22, 2020
0
101
0
Help with Counting!
How many subsets of the set {1, 2, 3 ... 11} have median 6?
Guest
Feb 22, 2020
0
187
1
+287
Help Pls!
Let and be real numbers such that the roots of are real. Prove that the roots of are real, for any real number
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madyl
Feb 22, 2020
0
176
1
help
At Ricardo's Tacos, four tacos and two orders of chips cost the same as two tacos and four orders of chips. If Ricardo's charges $2.00 for a single order of chips, how much does Ricardo's charge for 1 taco?
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Guest
Feb 22, 2020
0
206
1
Just a question
Let $f(x)$ be a quadratic polynomial such that $f(-4) = -22,$ $f(-1)=2$, and $f(2)=-1.$ Let $g(x) = f(x)^{16}.$ Find the sum of the coefficients of the terms in $g(x)$ that have even degree. (For example, the sum of the coefficients of the terms in $-7x^3
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Guest
Feb 22, 2020
0
321
1
help
The sum of two positive integers is 35. When the smaller integer is subtracted from twice the larger, the result is 34. Find the two integers.
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Guest
Feb 22, 2020
0
180
2
am i correct
i just want to make sure if i have these correct to submit thank you!
https://prnt.sc/r6803q
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Guest
Feb 22, 2020
0
220
1
help
A quadratic function has a vertex point of (3,1) and passes through the point (6,-8).Which equation represents the quadratic equation?
A y=- x^2 + 6x-8
B y=x^2 - 6x +10
C y=- x^2 - 6x-8
D y=- x^2 + 6x -10
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Guest
Feb 22, 2020
0
107
0
Domain restrictions help
https://prnt.sc/r67w18
im having trouble with understanding this
Guest
Feb 22, 2020
0
215
1
help
Some kids went on a bike ride. The ride was six hours long and the kids traveled 54 miles. For part of the ride they biked at a speed of 7 miles per hour and for part of the ride they biked at a speed of 11 miles per hour. For how long did they bike at
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Guest
Feb 22, 2020
0
293
2
Triangle Rotations
A triangle with vertices A(3,-1) , B(-2,6) and C(5,4) is rotated 90 degrees clockwise about Vertex B. Find the co-ordinates of the image of vertex C
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Guest
Feb 22, 2020
0
245
2
help
In the diagram below, triangle ABC is isosceles, and triangle MPQ is equilateral. Find the area, in cm2, of triangle MPQ.
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Guest
Feb 22, 2020
0
233
1
geometry
Unit circles are arranged as shown. Find the area of the shaded part.
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Guest
Feb 22, 2020
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