07corcum85504
20.09.2020 •
Mathematics
The difference of twice a number and 7 is 9?
Solved
Show answers
More tips
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- F Family and Home How to Remove Tar Stains: Tips and Recommendations from Experts...
- L Leisure and Entertainment How to Learn to Draw Graffiti: Tips for Beginners...
- G Goods and services How to sew a ribbon: Tips for beginners...
- L Leisure and Entertainment How to Land on the Moon: Your Comprehensive Guide...
- H Health and Medicine Novomin: What is it and how to use it?...
- A Art and Culture Attention, the Final Episode of Margo is Almost Here!...
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- S Style and Beauty How to Break in New Shoes: 7 Simple Methods...
Answers on questions: Mathematics
- M Mathematics Out of 2000 students, 48% preferred coffee, 54% tea and 64% coca cola. Of the total 28% used coffee ard tea, 32% tea and coca cola and 30% coffee andcoca cola. Only 6% did...
- M Mathematics Express the following division in the form of a + bi: (1+3i)(2+i)...
- M Mathematics Sum of n terms of series 0.3, 0.33, 0.333,...
- M Mathematics What are the vertices of triangle A B C if triangle ABC is dilated by a scale factor of 1/4...
- M Mathematics Please HelpGreatly Appreciated!!...
- M Mathematics Find the sum of arithmetic sequences 4+8+12+16+...+400...
- M Mathematics Find the areas in that unit square PQRS, P(4,3), Q(4,1), S(-1,3), R(-1,1)...
- M Mathematics Given cosΘ=2/3 and sinΘ 0, find sinΘ (Just for clarification, those zeros with horizontal lines in the center represent theta)...
- M Mathematics =5−82 find slope value...
- M Mathematics Find the sum of the Arithmetic series 2+5+8+20th term...
Ответ:
Let the number be x.
now,
2x- 7=9
Ответ:
70 000 - x - deposited at 12%
0.11x + 0.12(70000-x)=7900
0.11x + 8400 - 0.12x = 7900
8400- 7900 = 0.01x
500 = 0.01x
x=50 000 invested at 11%
rest (20K) invested at 12%