<span>Melvina's age is = x, Bettina's age is = 3x
the equation is
x + 20 = 3x - 20
subtract 3x from both sides
-(3x) + x +20 = 3x - 20 - (3x)
-2x + 20 = -20
subtract 20 from both sides
-2x + 20 - (20) = -20 - (20)
-2x = - 40
divide both sides by -2
(-2x)/-2 = (-40)/-2
x = 20
Melvinas age is 20 and Bettinas age is 60</span>
Answer:
X=85.78, because we have angle side
Answer:

Step-by-step explanation:
step 1
Find the value of x
In this problem i will assume that U,V and W are collinear and V is between U and W
so
----> by addition segment postulate
substitute the given values

solve for x


step 2
Find the value of VW

substitute the value of x

1 hour includes 60 minutes
? hour includes 20 minutes
We know that 8(hrs) is 4 times 2(hrs) so now we just need to multiply.
Multiply 1,100 by 4.
1,100 × 4 = 4,400
The jet will fly 4,400 miles in 8 hours.