Answer:
-20
Step-by-step explanation:
P-17=2P+3
P-2P=17+3
-P=20
Divide both sides by negative 1
P=20
The distance, s = 40t₁ where t₁ is the time to complete the outward journey.
The same distance = vt₂ where t₂ is the time to complete the return journey at speed v.
For the whole journey, 2s=60(t₁+t₂). Therefore s=30(t₁+t₂)=40t₁=vt₂.
30t₁+30t₂=40t₁, 10t₁=30t₂, t₁=3t₂, so s=120t₂=vt₂ and v=120kph.
lo puse en mi calculadora esperaba que esto ayudara
Answer:
Step-by-step explanation:
we are being told that each square is one unit. so, look at peak to peak and count the units.
1,2,3,4,5,6,7
From peak to peak is 7 units, so the period is 7
Answer:
b
Step-by-step explanation:
(a - b)² = a² - 2ab + b²
(2x - 6)² = (2x)² - 2*2x *6 + 6²
= 4x² - 24x + 36
