Answer:
-4
Step-by-step explanation: if the signs are different subtract the values and take the sign of the larger number!
- - - - - -
+ +
Answer:
rate of motorboat: b
rate of current: c
So the rate the boat travels upstream is $b - c$, and the rate it travels downstream is $b + c$
Step-by-step explanation:
d = rt
200 = (b - c)\cdot 5
200 = (b + c)\cdot 4
b - c = 40
b + c = 50
Adding these equations, we get:
2b = 90
b = 45
So
c = 50 - 45 = 5
<u>Therefore the rate of the boat is 45kph, and the rate of the current is 5kph</u>
Hope this helps :)
Answer:
im not sure about this one but i think its 2. 180ft squared
Step-by-step explanation:
There were 18 one point shots and 37 two point shots.
Step-by-step explanation:
Let the number of one point shots be x and the number of two point shots be y .
So we have the system:
x + y = 55
x + 2y = 92
Subtract the first equation from the second, we get:
0 + y = 92 - 55 = 37.
y = 37.
From equation 1 we have x = 55 - y
therefore x = 55 - 37 = 18.
