Log In Registration
Ask an expert
Mathematics
31.03.2023 08:34
143
205
7
Solved by an expert

12+mwhat is m?

12+m[tex] \frac{12 + m}{? 20 + m} = 0.90[/tex]what is m?
Show Answers
jalenrussell321
jalenrussell321
5,0(84 marks)
\dfrac{12+m}{20+m}=0.9\\\\20+m\neq0\to m\neq-20\\\\0.9=\dfrac{9}{10}\\\\\dfrac{12+m}{20+m}=\dfrac{9}{10}\ \ \ |\text{cross multiply}\\\\(12+m)\cdot10=(20+m)\cdot9\\\\(12)(10)+(m)(10)=(20)(9)+(m)(9)\\\\120+10m=180+9m\ \ \ \ |-120\\\\10m=60+9m\ \ \ |-9m\\\\m=60
UratazZ
UratazZ
4,8(45 marks)
Slope is -2 your welcome and with the others with no graph ... graph them out

Popular Questions about the subject: Mathematics

Last week lori’s gift sold 60 get well cards it sold twice as many congratulations...
Last week lori’s gift sold 60 get well cards it sold twice as many congratulations cards and three times as many birthday cards about how many cards did lori’s...
Mathematics
28.03.2022 23:46
Pls asap i ll give u : 3 there are only 2 questions 1. how can you represent...
Pls asap i ll give u : 3 there are only 2 questions 1. how can you represent and summarize data in a dot plot? 2. andrea recorded the points she scored in her...
Mathematics
30.07.2021 06:05
If the number of mortgage applications declined by 7% to 1,625,415. what...
If the number of mortgage applications declined by 7% to 1,625,415. what had been the previous year’s number of applications? (round your answer to the nearest...
Mathematics
04.02.2022 01:53
Evaluate for given value: m x 4/5 for m = 7/8...
Evaluate for given value: m x 4/5 for m = 7/8...
Mathematics
06.06.2022 12:50
Apublic library has an aquariam in the shape of a rectangular prism. the...
Apublic library has an aquariam in the shape of a rectangular prism. the base is 6 feet by 2.5 feet. the height is 4 feet. how many square feet of glasss were...
Mathematics
02.04.2022 04:55
What is the volume of a sphere, in cubic units, with a radius of 11...
What is the volume of a sphere, in cubic units, with a radius of 11...
Mathematics
31.03.2022 11:16
Acylindrical can for soup has a radius of 5 cm. if the volume of the can...
Acylindrical can for soup has a radius of 5 cm. if the volume of the can is 250π cm3, what is the height of the can? explain how you determined the answer....
Mathematics
16.04.2023 01:50
Racquel drew a picture of her school. she used the scale 1 cm : 3 cm. her...
Racquel drew a picture of her school. she used the scale 1 cm : 3 cm. her drawing is 61 cm long. what is length, in meters, of the actual school....
Mathematics
26.12.2022 21:53
Harrison is buying a bicycle for $340. what amount of sales tax must he...
Harrison is buying a bicycle for $340. what amount of sales tax must he pay if the sales tax rate is 7%?...
Mathematics
20.09.2021 23:30
Rosario draws the right triangular prism shown here and calculates the...
Rosario draws the right triangular prism shown here and calculates the volume. she then draws a second right triangular prism in which the dimensions are doubled....
Mathematics
31.07.2021 11:40

New questions by subject

You have noticed many polythene bags full of litter lying along the road...
You have noticed many polythene bags full of litter lying along the road early morning. these litter bags cause pollution and other serious diseases. you have...
English
05.07.2021 00:30
If angle 10 and angle 15 are congruent which lines are parallel...
If angle 10 and angle 15 are congruent which lines are parallel...
Mathematics
07.02.2020 21:48
Me with this answer this correctly...
Me with this answer this correctly...
Mathematics
17.02.2022 07:13
Maurice andrews earns $8.40 per hour bussing tables at joey s cafe´. he...
Maurice andrews earns $8.40 per hour bussing tables at joey s cafe´. he works until 10: 00pm rach night when yhe cafe´ closes. if he works 5 days a week and his...
Business
29.04.2022 18:52
Define heat, sound, light and potential energy. can i get a short definition...
Define heat, sound, light and potential energy. can i get a short definition for each energy and i need the answer now . by the way, the subject i want to choose...
Physics
25.01.2022 13:39
The torah is the holy book for what religion...
The torah is the holy book for what religion...
History
18.10.2021 00:06
The qur’an is the holy book for which of the following religions...
The qur’an is the holy book for which of the following religions...
History
20.03.2022 05:00
[tex] {x}^{2} + 4 \sqrt{ {2x}^{4 } } - {x}^{3} + {9x}^{2} + 4[/tex]...
[tex] {x}^{2} + 4 \sqrt{ {2x}^{4 } } - {x}^{3} + {9x}^{2} + 4[/tex]...
Mathematics
19.08.2021 15:15
Can you show the steps for 4.5÷0.03=...
Can you show the steps for 4.5÷0.03=...
Mathematics
08.05.2022 18:24
The sum of two numbers is 7, and their difference is 1. what are the two...
The sum of two numbers is 7, and their difference is 1. what are the two numbers?...
Mathematics
16.07.2021 03:54
Find out answers to questions
from an AI-bot
Get full access
Answers
Themes
Family and Home Sport Other Dating, Love, Relationships Health and Medicine Science and Technology Cities and Countries Travel and tourism Food and Cooking Philosophy Style and Beauty Animals and plants Business and Finance Construction and repair Leisure and Entertainment Legal consultation Goods and services Society and Politics Photography and Videography Auto and Moto Art and Culture Computers and Internet Horoscopes, Magic, Divination Work and Career Business Law Spanish SAT Engineering Social Studies Computers and Technology World Languages Mathematics French Biology Arts History Geography Health Chemistry Medicine Physics English Advanced Placement (AP) German
#
#
#
#
# #

We expand our knowledge with many expert answers

Answers