Answer:
22.5 kilometers
Step-by-step explanation:
we know that
The scale drawing is
That means
1 unit on a map represent 250,000 units in the actual
or
1 cm on a map represent 250,000 cm in the actual
or
1 cm on a map represent 2,500 m in the actual
or
1 cm on a map represent 2,5 km in the actual
therefore
using proportion
Find out how much represent 9 cm apart on the map
-6x-x^2-8 = -(x+2) x (x+4)
(This is if you are factoring the expression)
Răspuns:
693860
Explicație pas cu pas:
Diferența dintre: 824532 și 698845
824532 - 698845 = 125687
Dublând rezultatul, r:
2 * 125687 = 251374
Pentru a obține: 3 * 315078 = 945234
Numărul care trebuie adăugat la r, în altul pentru a obține 945234 este:
945234 - 251374 = 693860
Prin urmare, 693860 trebuie adăugat la 251374 pentru a obține (3 * 315078)
+3
The elevator went up 7 floors, making the current integer +7. The elevator then went down 4 floors, so 7 - 4 is 3. The final answer representing the change in floor level is +3 (positive three.)
Answer:
2 km/h
Step-by-step explanation:
Let
Rate of river current = x km/h
Speed of Peter's boat = 4x km/h
He takes 15 km trip up (opposite direction)
His speed upstream = 4x - x
= 3x
His speed is 3x and distance is 15 km
Time = Distance / Speed
15/3x
= 5/x
And
Moving downstream (same direction)
Speed will be 4x + x = 5x
Distance = 15km,
speed = 5x
Time = Distance / Speed
= 15/5x
= 3/x
Total time take for trip = 4 hours
Total time take for trip = upstream + downstream
4 =5/x + 3/x
4 = 8/x
Cross product
4 * x = 8
x = 8/4
x = 2
Rate of river current = x km/h
= 2 km/h
