Answer:
15
Step-by-step explanation:
For every 20 students, 3 will say that fruit is their favorite snack. So, if we multiply the number of students by 5, we multiply the number of students that say fruit is their favorite snack by 5 too. So, 15 students will say that fruit is their favorite snack.
Answer:
8xy
Step-by-step explanation:

Times then all and get back with me honey
Cos( 30 ) = 19√3 / x
√3 / 2 = 19√3 / x
Simplify √3 from both sides
1 / 2 = 19 / x
Multiply both sides by x
1 /2 × x = 19 / x × x
x / 2 = 19
Multiply both sides by 2
x / 2 × 2 = 19 × 2
x = 38
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Sin( 30 ) = y / x
1 / 2 = y / 38
Multiply both sides by 38
38 × 1 / 2 = 38 × y / 38
38 / 2 = y
19 = y
y = 19