Answer:
20 bracelets
Step-by-step explanation:
So Marcy has 12 bracelets and 15 necklaces. It is stated in the problem that this ratio (12:15) is the same as the ratio of Shelly's bracelets to necklaces (x:25). To solve this, we set up a proportion like so:
12/15=x/25 and we can use cross multiplication to solve for x. x=20, so the answer is 20 bracelets.
Put the equation in Photo math
x = 2
given 2 secants from an external point then
Then the product of the external part and the entire secant equals the product of the external part and the entire secant of the other secant.
3 ( 3 + 5 ) = 4 (4 + x )
3 × 8 = 4 ( 4 + x ) ⇒ 24 = 4 ( 4 + x )
divide both sides by 4
6 = 4 + x ⇒ x = 6 - 4 = 2
