Answer;
-2.5x-5
Step-by-step explanation:
first multiply whats in the () so -0.5 times 7z = -3.5z + -2 + 1z - -3
then combine like terms -3.5z + 1z = -2.5z
-2+-3= -5 so -2.5z - 5
The second one is the only equivalent equation. Simply plug in each variable in each equation. And compare!
For the first question, the choice at the bottom left corner is the answer.
For the second question, the two equations that represent the system of inequalities are y < 1- 3x and y ≥ 0.5x - 1
Complete question :
It takes Carol 30 minutes to drive to work using two roads. She drives 24 mph on a small road 1/2 for hour. Then she drives 56 mph on a highway for 1/4 hour. How far does Carol travel to work?
Answer:
26 miles
Step-by-step explanation:
The distance traveled is given by :
Distance = speed * time
Distance covered on small road :
24 mph * 1/2 hours = 12 miles
Distance covered in highway :
56 mph * 1/4 hours = 14 miles
Total miles traveled = 12 + 14 = 26 miles