Answer:
Average speed of the two boats are 28 km/hr. and 24 km/hr.
Step-by-step explanation:
Let the average speed of the boat with larger speed is x km/h and that of the other boat is y km/h.
Now, given that x - y = 4 ...... (1)
If the distance, that the first boat covers in 3 hrs. is d km then the second boat covers d km in 3.5 hrs.
Therefore, and
Now, from equation (1), we can get
⇒
⇒ km/hr.
Again, km/hr.
Therefore, the average speed of the two boats is 28 km/hr. and 24 km/hr. (Answer)
Answer:
x = 0, y = -3
Step-by-step explanation:
Multiply the first equation by 6. Now you have -30x - 18y - 54 = 0 and
4x - 18y - 54 = 0. Subtract the first equation from the second equation to get that 34x = 0, so x = 0. Plug this back in to figure out that y = -3.
Answer:
Option E is correct. The statement that represents the set given in words is all negative real numbers.
Given the set of numbers represented as {x | x < 0}.
Step-by-step explanation:
Found My Brain Btw....
Answer:
$19.62
Step-by-step explanation:
To round 19.623 to the nearest cent consider the thousandths’ value of 19.623, which is 3 and less than 5. Therefore, the cents value of 19.623 remains 2.
$19.623 rounded to the nearest cent = $19.62
Answer:
D
Step-by-step explanation: