All but -1 <x <1
_____________
Step-by-step explanation:
<span>X= math problems
y= science problems
x +y =42
x= y+10
Substitute: (y+10) + y =42
Combine y: 2y +10=42
Solve for y: y= 16
There are 16 science questions and 26 math questions</span>
Answer:
y = 1/2
Step-by-step explanation:
Varies inversely
xy = k
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Find the constant of variation
y = 39 when x = 1/3
k = 1/3 * 39
k = 13
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what is the value of y when x=26
26y = 13
y = 13/26
y = 1/2
Answer:
1/21
Step-by-step explanation:
11 boys + 10 girls = 21 students
We want the ratio of coaches to students
1 coach: 21 students
1/21
