![bobiscool3698](/avatars/35787.jpg)
bobiscool3698
25.08.2019 •
Mathematics
The scientific notation 2 x 102 has what value? 100 200 2000 1000
Solved
Show answers
More tips
- S Society and Politics Выборы: Смысл, Значение и Отражение...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
Answers on questions: Mathematics
- M Mathematics Plx explain how to do this ty...
- M Mathematics :buy three trees of the same kind at the regular price and get the fourth at 80% off. jocelyn is needing some trees for her backyard and decided to buy four red oak...
- M Mathematics To find the area of a trapezoid, dylan uses the formula a=1/2(b1+b2)h the bases have lengths of 3.6 cm and 12 1/3. the height of the trapezoid is the square root of...
- M Mathematics What is the answer to 2(6d+3)=18-3(16-3d)...
- M Mathematics The tour de france is a bicycle road race. the whole race is made up of 21 small races called stages. the table shows how several stages compare to the whole tour...
- M Mathematics An animal shelter has 9/10 of crates filled with animals.1/2 of the crates are holding dogs . what fraction of total number of crates are holding digs...
- M Mathematics How do you know that the triangle with side lengths 6, 8, and c is a right triangle?...
- M Mathematics When do you need to rationalize the denominator? my physics teacher says that you don t have to if you are isolating a variable....
- M Mathematics Can you tell me if they are proportional or nonproportional...
- M Mathematics p(a) = 8/15 p(b) = 6/15 p(a n b) = 1/5 find p(aub) a. 2/15 b. 11/15 c. 1/15 d. 4/15...
Ответ:
Ответ:
From this picture the smaller triangle is mirrored across the X and Y axis so AD and EC are the same leg
AD= 12 and EC = 3
The scale factor is 12/3 = 4, this means that DB is 4 times larger than BE
So we can set up an equation and solve:
k+5 = 4(k-7)
Distribute the right side:
k+5 = 4k-28
subtract 1 k from each side:
5 = 3k -28
add 28 to each side:
33 = 3k
Divide both sides by 3:
k = 33/3
k = 11
Now we know the value for k we can calculate BE by replacing k with 11:
BE = k-7
BE = 11-7
BE = 4
The length of BE is 4