Answer:
option D. DE = 11
Step-by-step explanation:
The line DF is equivalent in length to the blue line,
(x + 7) + 7 = 4x + 2
Solve:
x + 14 = 4x + 2
subtract 14 from both sided to get x alone,
x + 14 - 14 = 4x + 2 - 14
x = 4x - 12
subtract 4x from both sided,
x - 4x = 4x - 4x - 12
-3x = -12
divided both sides by -3,
-3x / 3 = -12 / -3
x = 4
Plug in x into DE equation:
x + 7: (4) + 7 = 11
Here is another example of solving for x, give it a try! : brainly.com/question/11979991
3.5z=2.25z-4.25+6.25
1.25z=2
z=1.6. As a result, this equation have one solution. Hope it help!
Day 1: 64,000
Day 2: 32,000
Day 3: 16,000
Day 4: 8,000
Day 5: 4,000
As each day goes by, half of the population is gone.
Let's solve by eliminating
x
. Since 18 is the lowest common multiple , let's multiply the first equation by 3 and the second by -2.
Add the two equations.
Divide by -11 to isolate
y
y= -2
Substitute
y
=
−
2
into either of the 2 equations, I'll just use the second one.
x = -1
