Answer:
True speed of the car is 87 km/h.
Step-by-step explanation:
Speed = 100 km/h
hike in speed = 25 %
Let the true speed is v.

Answer:
3200
Step-by-step explanation:
Replace the variables with their values and do the arithmetic.
(4·5)²·8 = 20²·8 = 400·8 = 3200
Answer:
first one
Step-by-step explanation:
Answer:
x= -2 and 9
Step-by-step explanation:

factorize it
- 18 = 2×3×3
TO MAKE IT 7
3×3=9
9-2 =7

x(x+9)-2(x+9)=0
x-2=0 ,x+9=0
x =2 x=-9