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#76 Re: Help Me ! » Tricky or Lengthy Word Problems » 2023-11-16 18:13:51
amnkb wrote:aw, thank you!
you're so sweet!
<3That's ok...sometimes I surprise myself!!
Here's a link to a helpful MIF page with examples: Algebra/Word Questions.
Many years ago (19 August 2009, to be precise) I posted a word puzzle along the lines of those on that MIF page, but somewhat tougher: Edna's age. There's some discussion there about solving methods, including a couple of different algebraic options.
I will check out the link provided.
#77 Re: Help Me ! » Radicand Comes Out » 2023-11-16 18:12:24
sologuitar wrote:By the way, I left the other math forum after I was so rudely insulted by Jonah. Do not tell him that I am here. If you do, I will request for you to be banned from this site. He does not need to know where I am. Agree?
I started on the forum as an ordinary member and I helped a few folk with questions. Then I was badly trolled because of an answer I gave. I spent the next few days composing angry and sarcastic responses (in my head) . In the end I decided to just say nothing.
What I didn't know until later is the moderators were discussing the situation and had privately ordered the troll to retract what had been written. They also discussed my behaviour and decided to ask me if I would become a moderator.
If you had said nothing I wouldn't have known about this other forum incident at all. Sometimes saying nothing is the best policy.
Bob
As the old saying goes: Silence is golden. It's ok for me that you know about my experience in not just one math forum but several forums. There are lots of angry folks in the world that really hate to see others happy doing something they enjoy.
#78 Re: Help Me ! » Square Root Raised to Square Root » 2023-11-16 18:06:16
There is always a way to solve problems without a calculator.
Before calculators some answers could only be obtained by doing the 'sums' long hand or by estimating or by using a tool such as a slide rule or logs. What I mean is there will be problems which won't simplify to a simple answer.
B
Thank you, Bob. In that case, thank God for calculators.
#79 Re: Help Me ! » Probability of Die and Coin » 2023-11-16 18:04:49
That sounds about right.
B
I hope to find the needed time in the near future to do an extensive self-study of probability. I find probability to be interestingly challenging.
#80 Re: Help Me ! » Volume of Storage Tank » 2023-11-16 18:02:04
sologuitar wrote:Emma needs to order liquid fertilizer for her landscaping company. She plans to keep the fertilizer in a large cylindrical storage tank, but isn’t sure how much it will hold. The tank is 10 feet tall and the circular base has a radius of 5 feet. What is the volume of her storage tank?
Just answer the questions posted and keep your text math-related.
It's good to see that I am at least able to answer GED math problems correctly.
#81 Re: Help Me ! » Total Cost of Phone Call » 2023-11-16 18:00:17
sologuitar wrote:A phone company charges $2 for the first five minutes of a phone call and 30 cents per minute thereafter. If Bill makes a phone call that lasts 25 minutes, what will be the total cost of the phone call?
Just answer the questions posted and keep your text math-related.
We both got the same answer.
#82 Re: Help Me ! » Probability of Selecting A Male » 2023-11-16 17:58:39
sologuitar wrote:What is the probability of selecting a male from a group of 4 males and 8 females?
Just answer the questions posted and keep your text math-related.
It makes no difference if the answer is written as 1/3 or 33(1/3)% or (100/3)%.
#83 Re: Help Me ! » Create A Math Formula » 2023-11-16 17:55:49
sologuitar wrote:Devon owns a house cleaning company and has to give price quotes to potential customers. He figures out his price by assuming a $25 base charge and then adding $8 for each bathroom and $4 for each other room. If he uses P to represent the price, B for bathroom, and R for other rooms, create a formula to represent this situation.
Just answer the questions posted and keep your text math-related.
Exactly what I did.
#84 Help Me ! » Real Solutions of the Quadratic Equation...B » 2023-11-15 03:53:48
- sologuitar
- Replies: 6
Show that the real solutions of the equation ax^2 + bx + c = 0 are the reciprocals of the real solutions of the equation cx^2 + bx + a = 0. Assume that b^2 - 4ac is greater than or equal to 0.
Any hints? What is the first step to consider?
#85 Help Me ! » Real Solutions of the Quadratic Equation...A » 2023-11-15 03:49:57
- sologuitar
- Replies: 4
Show that the real solutions of the equation ax^2 + bx + c = 0 are the negatives of the real solutions of the equation ax^2 - bx + c = 0. Assume that b^2 - 4ac is greater than or equal to 0.
I don't even know where to begin. I welcome any hints.
#86 Help Me ! » Find Value of k » 2023-11-15 03:42:54
- sologuitar
- Replies: 7
Find k such that the equation kx^2 + x + k = 0.
Let me see.
The discriminant is b^2 - 4ac
Let b = 1
Let a = k
Let c = k
(1)^2 - 4k + k = 0
Solving for k, I get 1/3.
Is this correct?
#87 Help Me ! » Comparing Television Screen Size » 2023-11-15 03:37:03
- sologuitar
- Replies: 2
The screen size of a TV is determined by the length of the diagonal of the rectangular screen. Traditional TVs come in a 4 : 3 format, meaning the ratio of the length to the width of the rectangular screen is 4 yo 3.
A. What is the area of a 37-inch traditional TV screen?
B. What is the area of a 37-inch LCD TV whose screen is in a 16 : 9 format. Which screen is bigger?
HINT: If x is the length of a 4 : 4 format screen, then (3/4)x is the width.
Let me see.
Traditional TV
Use a^2 + b^2 = c^2
x^2 + (3x4/)^2 = (37)^2
LCD TV
Use a^2 + b^2 = c^2
x^2 + (9x/16) = (37)^2
Is any of this correct?
#88 Help Me ! » Find Width of Border » 2023-11-15 03:25:22
- sologuitar
- Replies: 2
A lanscaper, who just completed a rectangular flower garden measuring 6 feet by 10 feet, orders 1 cubic yard of premixed cement, all of which is to be used to create a border of uniform width around the garden. If the border is to have a depth 3 inches, how wide will the border be?
NOTE: 1 CUBIC YARD = 27 CUBIC FEET
6 feet by 10 feet = 60 feet^2
Length = 2x + 10
Width = 2x + 6
Is this right so far?
#89 Help Me ! » Volume of Storage Tank » 2023-11-14 18:46:06
- sologuitar
- Replies: 2
Emma needs to order liquid fertilizer for her landscaping company. She plans to keep the fertilizer in a large cylindrical storage tank, but isn’t sure how much it will hold. The tank is 10 feet tall and the circular base has a radius of 5 feet. What is the volume of her storage tank?
Let me see.
I found the volume of a cylinder formula online to be V = pi•r^2• h, where r = radius and h = height.
V = pi(5)^2(10)
V = pi(25)(10)
V = 250pi (feet)^3
You say?
#90 Help Me ! » Total Cost of Phone Call » 2023-11-14 18:38:44
- sologuitar
- Replies: 2
A phone company charges $2 for the first five minutes of a phone call and 30 cents per minute thereafter. If Bill makes a phone call that lasts 25 minutes, what will be the total cost of the phone call?
Let me see.
So, $2 for the first 5 minutes.
25 minutes - 5 minutes = 20 minutes
Let 30 cents = 0.30.
Then 20 minutes x 0.30 = $6
I say $2 + $6 = $8 for the total cost of the phone call.
You say?
#91 Help Me ! » Probability of Selecting A Male » 2023-11-14 18:31:50
- sologuitar
- Replies: 2
What is the probability of selecting a male from a group of 4 males and 8 females?
Let me see.
In all there are 12 people.
Let P(selecting a male) = probability of selecting a male.
P(selecting a male) = 4/12 = 1/3
My answer = 1/3
You say?
#92 Re: Help Me ! » Find Number of Ways » 2023-11-14 18:28:40
sologuitar wrote:How many different passcodes can be formed from the letters {A, B, C, D} if each letter can only be used once?
Just answer the questions posted and keep your text math-related.
Did I do something wrong? We both got the same answer.
#93 Re: Help Me ! » Company's Profit or Loss » 2023-11-14 18:27:32
sologuitar wrote:Company X sold 1,500 units of its product for $9 each and 750 units for $6 each. If the company's cost of producing each unit of the product was $7, what was the company's profit or loss on the sale of 2,250 units?
Just answer the questions posted and keep your text math-related.
Isn't that what I did? Did I do something different?
#94 Help Me ! » Create A Math Formula » 2023-11-14 18:26:18
- sologuitar
- Replies: 2
Devon owns a house cleaning company and has to give price quotes to potential customers. He figures out his price by assuming a $25 base charge and then adding $8 for each bathroom and $4 for each other room. If he uses P to represent the price, B for bathroom, and R for other rooms, create a formula to represent this situation.
Let me see.
$8 for each bathroom = 8B
$4 for each room = 4R
Base charge = $25
The base charge does not change.
I think the formula is P = 25 + (8B + 4R).
You say?
#95 Help Me ! » Find Number of Ways » 2023-11-14 18:20:13
- sologuitar
- Replies: 2
How many different passcodes can be formed from the letters {A, B, C, D} if each letter can only be used once?
Let me see.
There are 4 letters. Each letter can only be used once.
I think this is a factorial question.
Here is my guess:
4! = 4 x 3 x 2 x 1 = 24
Answer = 24 ways
You say?
#96 Re: Help Me ! » Tricky or Lengthy Word Problems » 2023-11-14 18:17:02
sologuitar wrote:Just answer the questions posted and keep your text math-related.
Let's move on and get back to mathematics.
Solving math problems keeps the human mind active.
#97 Re: Help Me ! » Square Root Raised to Square Root » 2023-11-14 18:15:17
sologuitar wrote:There is always a way to solve problems without a calculator.
i wish, but no
thats why we need 'numerical analysis'
it has ways to solve things numerically/approximately
article - ask a mathematician
specific example - stack overflow
sry
Numerical analysis is an advanced course.
#98 Re: Help Me ! » Company's Profit or Loss » 2023-11-14 14:56:51
You've done all the hard work.
Profit = total sales money minus total costs.
Bob
Profit = $18,000 - $15,750
Profit = $2250
Yes?
#99 Re: Help Me ! » Company's Profit or Loss » 2023-11-14 14:55:34
sologuitar wrote:This together = $18,000.
Also 2250 units at $7 each = $15, 750.
The company's profit or loss is the confusing part for me.
amnkb wrote:profit is income less outgo
profit is revenue minus costs
so subtractsologuitar wrote:Subtract what? It cannot be 18,000 - 15,750, right?
why not?
the 18000 is revenue or income
the 15750 is cost or outgo
profit is what is left after subtracting cost/outgo from revenue/income
so 18000 - 15750 is the right subtraction
In that case the profit is $2250.
#100 Re: Help Me ! » Square Root Raised to Square Root » 2023-11-14 14:54:12
sologuitar wrote:Is there an algebraic way to simplify this stuff?
amnkb wrote:don't think so
if wolfram alpha cant come up with an exact ans then you and me probably cant eithersologuitar wrote:Again, just a question. No need to belittle anyone for asking questions that maybe others are hesitant to ask.
i was just admitting that i'm not that good at math
being honest abiout my limitations
i didn't mean to 'belittle' myself
trying to stay humble
or was it the smily that offended you?
either way, sry
There is always a way to solve problems without a calculator.
Perhaps advanced techniques are needed.