venom1577
04.03.2021 •
Mathematics
Help I just need num 1
Solved
Show answers
More tips
- F Food and Cooking Fresh and Easy Lemonade in 10 Minutes...
- S Sport How to wrap boxing hand wraps? Everything you need to know!...
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- A Animals and plants How to Grow Lime from a Seed: Simple Tips and Interesting Facts...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
Answers on questions: Mathematics
- M Mathematics Are you going to vote for trump yes or no bc f trump...
- M Mathematics 6 determining if a relationship is a function determine if each set of ordered pairs represents a function. (7-4), (0.9), (2,-2) (2,3), (6,-,3) (0,3), (0..0) (-6,,6), (8,2) intro...
- M Mathematics Which best describes the dimensions of a plane...
- M Mathematics Yvonne has four trophies: one for basketball, one for soccer, one for tennis, and one for volleyball. but she can display only three of them at a time in her trophy case. which...
- M Mathematics Place the indicated product in the proper location on the grid. 3a2 · 2a3 next question ask for turn it in...
- M Mathematics Find the measure of the unknown angle...
- M Mathematics What is the slope of the line that passes through the points ( 16, -1 ) and ( -4, 10 )? a) -20/11b) -11/20c) 11/20d) 20/11...
- M Mathematics Factor 6x4 – 5x2 + 12x2 – 10 by grouping. what is the resulting expression?...
- M Mathematics What is the equivalent ratio of 156: 390...
- M Mathematics Barry collects 125cm^3 of honey a month. how many litres of honey will he make in a year?...
Ответ:
Te ayudaría ... ¡si supiera inglés! :P
Step-by-step explanation:
Ответ:
Proportion says that two ratios (or fractions) are equal.
Example: you want to draw the dog's head ... how long should it be?
proportion dog
Let us write the proportion with the help of the 10/20 ratio from above:
?42 = 1020
Now we solve it using a special method:
?/42 : 10/20
Multiply across the known corners,
then divide by the third number
And we get this:
? = (42 × 10) / 20
= 420 / 20
= 21
So you should draw the head 21 long.
Source: https://www.mathsisfun.com/algebra/proportions.html
Now, back to your question
20/5
a. 100/25
100 x 5 = 500
25 x 20 = 500
Both matches, so 100/25 is proportional to 20/5
b. 10/2
10 x 5 = 50
2 x 20 = 40
50 is not equal to 40, so 10/2 is not proportional to 20/5
c. 60/15
60 x 5 = 300
15 x 20 = 300
Both matches, so 60/ 15 is proportional to 20/5
d. 40/2
40 x 5 = 200
2 x 20 = 40
40 is not equal to 200, so 40/2 is not proportional to 20/5
e. 4/2
4 x 5 = 20
2 x 20 = 40
20 is not equal to 40, so 4/2 is not proportional to 20/ 5
In conclusion, 100/25 and 60/15 are proportional to 20/5.
Hope this helped! Good luck!