![mathsux6600](/avatars/39840.jpg)
mathsux6600
21.04.2021 •
Mathematics
Please help me with this question if you can
Solved
Show answers
More tips
- A Auto and Moto Experience the World of the Most Expensive Cars on the Planet...
- S Style and Beauty How to Get Rid of a Double Chin?...
- F Food and Cooking How to Cook Julienne? Recipes and Tips...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- F Food and Cooking Apple Cider Vinegar: The Ultimate Health and Beauty Solution...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
Ответ:
Step-by-step explanation:
the 3rd angle = 4x+17 because of vertical angles
4x+17 + x+23 + 80 = 180 sum of interior angles of a triangle
5x +40 = 100
5x = 60
x = 12
angle A = x + 23 = 12 +23 = 35
Ответ:
Let's define the variable t as the number of years that have passed since 1950.
Such that x = 0 represents the year 1950.
We know that in 1950, the record was 63.2 seconds.
And since each year since, the record has decreased by 0.4 seconds.
So we have a linear relationship:
R(t) = 63.2 s - 0.4s*t
When we have t = 0 (the year 1950)
The record is:
R(0) = 63.2s - 0.4s*0 = 63.2s
That is what we should expect.
Now, if t = 0 is the year 1950
Then t = 7 is the year 1957.
So the record in the year 1957 will be:
R(7) = 63.2s - 0.4s*7 = 60.4 seconds.