Answer:Price of laptop A = $1220
Step-by-step explanation:
Sum of the price: A + B = 2185
Sum of the price: A + C = 2571
B : C = 5 : 7
B = 5/7 × C
So, replace the B:
A + 5/7 C = 2185
A + C = 2571
Eliminate by subtracting the first from the second: 2/7 C = 386
C = 1351
So, A = 2571 - 1351 = 1220
Kinetic energy formula is
K.E =
mv²
m = 0.5 kg
v = 3 m/s
Plug in the given.
K.E =
× (0.5) × (3)²
=
2.25 J
Answer:
(0, ∞)
Step-by-step explanation:
A good place to start is by visualizing what the graph looks like on a number line.
For x > 0, it is an open circle at x=0, and shading to the right extending to infinity.
__
So, the left end of the interval is 0, but 0 is not included in the interval.
The right end of the interval is infinity, but there is no such number, so "infinity" is not included in the interval.
"Not included" means you use round brackets ( ) for the corresponding end of the interval. ("Included" would mean you use square brackets [ ].)
So, the interval 0 < x < ∞ is written in interval notation as ...
(0, ∞)
Answer:
2(2x + 5)
Step-by-step explanation:
2 is common to both 4x and 10, so 4x + 10 = 2(2x + 5)
Answer:
a rotation of 180° about point (0,2)
a dilation of 0.5
Step-by-step explanation:
