Solve for f. 16/f = 12/9
a.13
b.12
c.11
d.10

B)12

Step-by-step explanation:

Option B

Step-by-step explanation:

16/f = 12/9

Multiply f on both sides

(16/f) × f = (12/9) × f

16 = (12/9) × f

Now, multiply 9 on both sides

16 × 9 = (12/9) × 9 × f

144 = 12 × f

Now, divide both sides by 12

144/12 = (12/12) × f

12 = f

f = 12

85.3-64 = 21.3

so laura has already added 85.3 grams of chocolate powder and she has gone over the amount specified in the recipe by 21.3 grams

hope i ! have a great  day!

secant-secant formula:

(whole secant) x (external part) =           (whole secant) x (external part)

(8+y-2) *8=                                           (y+4+6) *6

(y+6)*8 = (y+10) *6

distribute

8y+48 = 6y +60

subtract 6y from each side

2y +48 = 60

subtract 48 from each side

2y = 12

divide by 2

y = 6

sv =     (y+4+6)

sv   = 6+4+6

sv = 16