Answer:
The second one
Step-by-step explanation:
Divide the total amount traveled with the time it took.
21/3 = 7/1
Alba's average speed is 7 miles per hour
hope this helps
Answer:
-27
Step-by-step explanation:
Solve the system of equations by elimination
Multiply the second equation by 2
-5x + 2y = -51
-2x -2y = -12
Combine
-7x = -63
x = 9
Then, find y by plugging in 9 for x
-(9) - y = -6
-y = 3
y = -3
Then, multiply x by y
(9)(-3) = -27
Answer:
Step-by-step explanation:
Two numbers are given. -7 and 3. What are happening with the numbers? well, the question STARTS with -7 points then he gains 3. Well what happens if you had 0 points and gained 3? you'd add them. So the same thing happens here. so the expression is -7+3 = -4
In a proper sentence the answer woud be something like "The final score is -4 since he gained three after having -7."
Let me know if there was something you didn't understand.
CASE CLOSED
She figured it out on her own ,:D