![smay7681](/avatars/26052.jpg)
smay7681
29.08.2019 •
Mathematics
Malaya thinks of two different plans she could use to save money in a bank
account. the tables show the account balances for each plan.
if the pattern for each plan stays the same, and malaya neither earns interest
nor withdraws any of the money from the account, how would the balances of
the plans compare after a long time?
month
1
2
3
4
s5usd
on-
plan a
$0.01
$0.03
$0.09
$0.27
$0.81
plan b
$50
$100
s150
s200
s250
Solved
Show answers
More tips
- H Health and Medicine How to Tan in a Tanning Bed? Tips and Recommendations...
- W Work and Career What is the Most In-Demand Profession in the Modern World?...
- A Auto and Moto How Can Parking Sensors Help Drivers?...
- H Health and Medicine What is the Normal Blood Sugar Level in a Healthy Person?...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Mathematics
- M Mathematics Dishsoap costs $1.16 for 7.2 ounces. Write a unit rate to find how much it costs per ounce. Group of answer choices...
- C Chemistry PLEASE HELP this is physical science....
- M Mathematics A cruise ship coasts down from 30 m/s to 0 m/s in 8 minutes. What is the acceleration PLEASE HELP WILL GVE BRAINLIEST...
- M Mathematics Lee mow s 1\3 of his lawn and uses 1\2 gallon of gas. what faction of the lawn can he mow per gallon...
- B Biology The most prominent features of a narrow v-shaped valley where the stream profile drops quickly are a. meanders and floodplains. b. rapids and waterfalls. c. lakes and ponds....
Ответ:
3) Option C is correct.
3 over 3 and 61 hundredths = 6 over 7 and 22 hundredths
Step-by-step explanation:
Triangle BDE is dilated by a scale factor of 2 to obtain triangle BAC.
Dilation by a scale factor of 2 means that all the sides of triangle BAC are twice as much as the corresponding sides of triangle BDE.
And triangle BDE is similar to triangle BAC.
It also means that the corresponding angles are necessarily equal.
BD = 2
BE = 3
ED = 3.61
BA = 2 × BD = 2 × 2 = 4
BC = 2 × BE = 2 × 3 = 6
CA = 2 × ED = 2 × 3.61 = 7.22
Cos ∠D according to trigonometric relations is given as (adj/hyp)
Adj = Adjacent side = BE = 3
Hyp = hypotenuse side = ED = 3.61
Cos ∠D = (3/3.61)
Cos ∠A can also be similarly obtained from trigonometric relations as (adj/hyp)
Adj = Adjacent side = BC = 6
Hyp = hypotenuse side = CA = 7.22
Cos ∠A = (6/7.22)
Since the two angles are corresponding angles of two similar triangles,
We can easily see that
Cos ∠D = Cos ∠A
(3/3.61) = (6/7.22) = 0.8310
Which is necessarily equal to each other
Hence, the proportion that proves that Cos ∠D = Cos ∠A is 3 over 3 and 61 hundredths = 6 over 7 and 22 hundredths.
please mark me brainliest :)