I don't know if this is right, but I'm pretty sure it's B.
2x + y =7 (1)
3x-y=8 (2)
(1) + (2)
5x = 15
x = 3
Answer:
The probability that he rolls a sum of 9 given the sample space is . 9/36, or 1/4.
What is the probability?
Probability determines the chances that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.
The probability that he rolls a sum of 9 = cubes that have a sum of 9 / total number of cubes
9/36 = 1/4
20x≥100
x≥5
5 gallons needed to travel 100 miles
Answer:
This system has one solution only
Step-by-step explanation:
We have to evaluate the equations shown in the picture you gave
Since the equations differs, they are not the same, this system has only on solution for x and for y.
In fact, if we sum them, we obtain y=0, and then x=2
