Answer:
$21.28
Step-by-step explanation:
First, find 12% or 19 -- this is 2.28
Next, take the total (19) and add 2.28 to it.
$19+$2.28=$21.28
1/2r -3= 3 (4-3/2r) is to be solved for r.
I'll begin by making the assumptions that by 1/2r you actually meant (1/2)r and that by 3/2r you actually meant (3/2)r. When in doubt, please use parentheses to make your meaning clear.
Thus, 1/2r -3= 3 (4-3/2r) becomes (1/2)r -3= 3 (4-(3/2)r ) .
Simplify this by multiplying all 3 terms by 2. Doing this will eliminate the fractions:
r -6 = 3 (4*2-(3)r ) or r - 6 = 24 - 9r
Now expand the right side, using the distributive property of
r - 3 = 24 - 9r
Regrouping so as to combine like terms:
10r = 30
Solving for r: r = 30/10 = 3
The value of r that satisfies this equation is 3
Answer:
The distance cover by Mai's bike is 2 time the distance cover by Noah's bike
Step-by-step explanation:
Given as :
The distance cover by Mai's bike = 
= 7 
miles
I.e = 
miles
Or, = 
miles
The distance cover by Noah's bike = 
= 3 
miles
I.e = 
miles
Or, = 
miles
let the number of times that Noah's bike ride was Mai's bike ride = n
So, The distance cover by Mai's bike = n × The distance cover by Noah's bike
Or, 
= n ×
Or, miles = n × miles
Or, n = 
∴ n = 
I.e n = 2
Hence The distance cover by Mai's bike is 2 time the distance cover by Noah's bike . Answer
Answer:
A is a solution because it is in the shaded area.
Step-by-step explanation:
