C+4 represents Sheldon's age
5+4=9 so Sheldon will be 9 when Lee is 5
5+9=14 their combined age would be 14
No Lee must be 11 years old exactly to get to 26 because 11+(11+4)=11+15=26 so he must be exactly 11 years old he cannot be older
Answer:
Reciprocal of 1/2 is 2
Step-by-step explanation:
= 1/2
= 2/1
= 2
hope it helps!
Answer:
x=3 y=4
Step-by-step explanation:
x+y=7; x + 2y =11
step: solve x + y = 7 for x:
x + y+ -y =7 + -y (add -y to both sides)
x = -y + 7
step: substitute -y + 7 for x in x + 2y =11:
x + 2y = 11
-y + 7 + 2y = 11
y + 7 =11(simplify both sides of the equation)
y + 7 + -7 = 11 + -7 (add -7 to both sides)
y = 4
step: substitute 4 for y in x = -y + 7:
x = -y +7
x = -4 + 7
x = 3 (simplify both sides of the equation)
The answer for the given above is letter "a, -6r2s4t3". This is obtained by dividing 18 by -3 and subtracting the exponent below with that from above of the same variable. For r, subtract 2 from 4 to get 2. For s, subtract 1 from 5 to get 4 and lastly for t, subtract 3 from 6 to get 3.
40% of 200 is 80 so 120 were sold at the door
