people pleaze dont say do ur own homework pleaze...
i have to get this done tonight or im done with school..
i have no idea wat these answers are..
i had 11 pages of math and i knew all but these pleaze help...
fill in the blanks about similar figures..
similar figures have the same _________, but not necessarily the same __________. corresponding sides of similar figures are ___________.
write a proportion, then solve.
a flag casts a shadow 10 ft long. if a man 6ft tall casts a shadow 4ft long at the same time of day, how tall is the flagpole?
a photograph is 25 cm wide and 20 cm high. it must be reducced to fit a space that is 8 cm high. find the width of the reduced photograph?
give 3 equivalent fraction.
3/10
2/7
is the set of ratios a proportion? yes or no.
8/14 9/20
6/18 5/15
25/40 12/16
find the value of x.
3/8 = 6/X
4/X = 2/9
6/20 = X/18
final test!!!!
write each ratio as a fraction in lostest terms.
3 out of 21
6:20
2007-04-19 20:22:47 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Similar figures have the same _shape_, but not necessarily the same _size_. Corresponding sides of similar figures are _proportional_.
a flag casts a shadow 10 ft long. if a man 6ft tall casts a shadow 4ft long at the same time of day, how tall is the flagpole?
x / 6 = 10 / 4 => x = 15, so the flag is 15ft tall.
a photograph is 25 cm wide and 20 cm high. it must be reducced to fit a space that is 8 cm high. find the width of the reduced photograph?
x/25 = 8/20 => x = 10, so the width is 10cm.
give 3 equivalent fraction.
3/10 = 6/20 = 9/30 = 12/40
2/7 = 4/14 = 6/21 = 8/28
is the set of ratios a proportion? yes or no.
8/14 9/20
No, 9/8 ≠ 20/14.
6/18 5/15
Yes, both equal to 1/3.
25/40 12/16
No, they simplify to 5/8 and 3/4 respectively.
find the value of x.
3/8 = 6/X
Cross-multiply: 3X = 6×8 = 48 => X = 48/3 = 16.
4/X = 2/9
X = 9×4/2 = 18.
6/20 = X/18
X = 27/5
3 out of 21 = 1/7
6:20 = 3/10
2007-04-19 20:34:07 · answer #1 · answered by Scarlet Manuka 7 · 0⤊ 0⤋
A flag casts a shadow 10 ft long. if a man 6ft tall casts a shadow 4ft long at the same time of day, how tall is the flagpole?
6:4 = 3:2
therefore x:10 is 15:10, the flagpole is 15ft tall
A photograph is 25 cm wide and 20 cm high. it must be reduced to fit a space that is 8 cm high. find the width of the reduced photograph?
20:8 is 5:2, therefore
25:x = 25:10, the width is 10cm
Give 3 equivalent fraction.
3/10 = 6/20 = 9/30 = 12/40
2/7 = 4/14 = 3/21 = 4/28
Is the set of ratios a proportion? Yes or No.
8/14 = 9/20?
No (4/7 ; 9/20)
6/18 5/15
Yes (1/3 = 1/3)
25/40 12/16
No (5/8 ; 3/4)
Find the value of x.
3/8 = 6/X
x = 16
4/X = 2/9
x = 18
6/20 = X/18
x = 5.4
Final test!
Write each ratio as a fraction in lowest terms.
3 out of 21
3:21 = 1:7
6:20
6:20 = 3:10
2007-04-19 20:34:21 · answer #2 · answered by cbagan89 2 · 0⤊ 0⤋
similar figures have the same Shape, but not necessarily the same size. corresponding sides of similar figures are in proportion.
a flag casts a shadow 10 ft long. if a man 6ft tall casts a shadow 4ft long at the same time of day, how tall is the flagpole
Let the height of flag pole be x then ratio of height and length of shadow is same.
Therefore x/4 = 6/4
x = 15 ft. height of flagpole
a photograph is 25 cm wide and 20 cm high. it must be reducced to fit a space that is 8 cm high. find the width of the reduced photograph
Ratio of width and height of original size and new size is equal
Let new width be x
so 25/20 = x/8
x = 10 cm.
2007-04-19 20:36:59 · answer #3 · answered by Pranil 7 · 0⤊ 0⤋
shape, size, proportionate
xft pole/10 ft = 6 ft/4ft
4x=60
x=15 ft
25cm wide/20 cm h= xcmwide/8 cm h
200 cm= 20xcm
x= 10 cm wide
9/30, 6/20, 12/40
4/14, 6/21, 8/28
No, Yes, No
3x=48
x=16
36=2x
x=18
108=20x
x=5.4
3:21= 1/7
6:20= 3/10
2007-04-19 20:37:40 · answer #4 · answered by clevelandbrownsgirl2007 3 · 0⤊ 0⤋
Wow this is really easy stuff. What grade are you in? I'm in 8th. For this part, [find the value of x]
3/8 = 6/16
4/18 =2/9
6/20 = 5.4/18
Too lazy to do the rest. Gotta back to my own hw. I only did this because I once suffered in math. Good luck!
2007-04-19 20:31:19 · answer #5 · answered by ?? 2 · 1⤊ 0⤋
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2016-11-25 23:55:28 · answer #6 · answered by gay 4 · 0⤊ 0⤋
You need to decide whether or not this is your homework.
According to what you posted in Homework Help, this is not your homework, but now you have to get it done or you're out of school?
2007-04-19 20:26:19 · answer #7 · answered by Tim N 5 · 1⤊ 1⤋
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2007-04-19 20:39:11 · answer #8 · answered by I feel better 5 · 0⤊ 0⤋
do your hw by yourself
be independent
2007-04-19 20:25:26 · answer #9 · answered by nishank r 2 · 2⤊ 0⤋