![Perez9126](/avatars/28583.jpg)
Perez9126
16.02.2021 •
Mathematics
Twice a number d plus 3 is at most 24. Write this word sentence as an inequality.
An inequality is:
( Please make answer in complete sentences, thank you for answering the question! . ) - Blixy
Solved
Show answers
More tips
- C Computers and Internet iPhone SMS Delivery Report: How to Set It Up...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- H Health and Medicine Is it true that working with a computer is harmful to your eyesight?...
- H Health and Medicine Boosting Immunity: A Complete Guide on How to Improve Your Body’s Natural Defenses...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- C Computers and Internet How to Teach Older Generations to Work with Computers?...
- G Goods and services How to Choose a Coffee Maker? The Ultimate Guide for Coffee Lovers...
- C Computers and Internet Porn Banner: What It Is and How to Get Rid Of It?...
Answers on questions: Mathematics
- H History who is avneet kaur according to you ? Do you have a fanpage for her ? if yes Drop you re fan page username ...
- M Mathematics Mr. Williams constructed a line through point P that is parallel to the 2nd line as shown below....
- M Mathematics The left and nght page numbers of an open book are two consecutive integers whose sum is 447. Find these page numbers...
- M Mathematics Tina bought a coat that cost $70.00. the sales tax in her state is 6%. what is the final amount that tina has to pay for the coat?...
Ответ:
What?
Step-by-step explanation:
Ответ:
I’m using my phone so I don’t have all the inequality symbols, but imagine < is the inequality symbol for at most, so basically < with a line underneath
Ответ:
3 L of 30% and 2 L of 14% solution are required
Step-by-step explanation:
I like to work mixture problems using a device I learned from a nursing school student. It is an X diagram with the solution strengths on the left, the mixture strength in the middle, and numbers on the right that are the differences along the diagonals.
Here, the upper difference is 9.6 = 23.6 - 14; the lower difference is 6.4 = 30 - 23.6. These differences, 9.6 and 6.4 can be divided by their common factor (3.2) to see that they are in the ratio 3:2. That is,
... 9.6 : 6.4 = 3 : 2
The upper difference and lower difference represent the ratio of the upper and lower constituent solutions (30% and 14%). Our result means that the ratio of 30% solution to 14% solution is 3 : 2.
As it happens, these ratio units, 3 and 2 sum to 5, which is precisely the number of liters of solution we want. Hence we want ...
... 3 liters of 30% solution and 2 liters of 14% solution.
_____
Comment on the tool
This tool can be used with virtually any mixture problem—even problems involving dividing investment amounts between accounts that have different interest rates. (Figure the mix that gives the average rate of return on the total investment value.)
_____
Alternate solution method
If you want to write an equation, you write it for the total amount of acid in the solution. Let x represent the number of liters of 30% solution (the strongest contributor). Then that equation is ...
... 0.30x + 0.14(5-x) = 0.236·5
... 0.16x + 0.7 = 1.18 . . . . eliminate parenthses, simplify
... x = 0.48/0.16 = 3 . . . . subtract 0.7, divide by the coefficient of x
3 liters of 30% solution are required; 2 liters of 14% solution.