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!!!!!
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.
Geez sorry...
21 h = 15 * 49
7 h = 5*49
h = 5 *49 / 7 = 5 * 7 * 7/ 7 = 5*7 = 35
To solve the proportion using cross products, you need to set up an equation by multiplying the numerator of the first fraction, 21, with the denominator of the second fraction, h, and equating it to the product of the denominator of the first fraction, 49, with the numerator of the second fraction, 15. This can be written as:
21 * h = 49 * 15
To solve for h, you can divide both sides of the equation by 21:
h = (49 * 15) / 21
Now, calculate the value of h:
h = 735 / 21
Dividing 735 by 21 yields:
h ≈ 35
Rounded to the nearest hundredth, the value of h is 35. Therefore, the correct answer choice is A, 35.