Answer:
x = -1
Step-by-step explanation:
2x - 7 = 9x
Subtract 2x from both sides: -7 = 7x
Divide both sides by 7: -1 = x
Now plug in 7 for every value of x in the original equation to make sure you are correct:
2(-1) - 7 = 9(-1)
-2 - 7 = -9
-9 = -9
I hope this helps!
Answer:
After 5 days Arnita has swum 2.5 kilometers.
Step-by-step explanation:
50 x 10 = 500 lengths of the pool per day
500 x 5 = 2,500 meters
2,500 meters = 2.5 kilometers
Answer:
no
Step-by-step explanation:
312
