Asked by anonymous

Solve the proportion using cross products. Round to the nearest hundreth if necessary.
21/49=15/h.

A 35
B 2.5
C 4.2
D 6.0****

PLEASE HELP!!!!!
Answered by Reed
Okay, how did you get this answer? It is 35. Use the butterfly method. Don't know what that is? Look it up. After multiplying 49 by 15, you would get 735. If you are solving for h, just multiply all the answer choices by 21 until you get 735. 35*21=735. h=35, therefore, the answer is A. 35. Next time don't guess answers.
Answered by anonymous
Geez sorry...
Answered by Anonymous
21 h = 15 * 49
7 h = 5*49
h = 5 *49 / 7 = 5 * 7 * 7/ 7 = 5*7 = 35
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