Question

Determine whether the figures are similar.
If so, determine the scale factor.



Select one:
a. yes; scale factor = 9/21
b. no
c. yes; scale factor = 2/5
d. yes; scale factor = 3/7

Answer 1

are the ratios of corresponding sides the same

so does QR/GF = RS/GH

substitute the measures and check..

Answer 2

yes

Answer 3

Solve the proportion to determine the value of x.

2x / 5 = x+3 / 3

Answer:



Jane is traveling to Europe this summer with the French club. She plans to bring $300 to spend while she is there. If $90 in U.S. currency is equivalent to 63 euros, how many euros will she receive when she exchanges her money?
Answer:


Solve the proportion to determine the value of x.

5x-4 / 4x+7 = 13 / 11

Answer:

Answer 4

wow... so 21/9 = 10/4

or 2 2/3 = 2 1/2

I think you need to reconsider your answer to the similar figures question

Answer 5

so the answer would be c?

Answer 6

well for similar figures, all corresponding sides need to be in the same ratio

so when you look at QR/GF and RS/GH are they the same values

21/9 does it equal 10/4

or after simplifying does

7/3 equal 5/2 ?

Answer 7

the answer would be b no?

Answer 8

correct

Answer 9

for 2x/5 = (x +3)/3

cross multiply and you get

6x = 5x + 15

now solve for x

Answer 10

x=15 @campbell_st

Answer 11

correct

and the last question, same thing

cross multiply

11(5x - 4) = 13(4x + 7)

Answer 12

x=45 @campbell_st

Answer 13

well I think its

3x = 47

55x - 44 = 52x + 91

then solve for x