Answer:
128
Step-by-step explanation:
4 x 2 = 8
8 x 2 = 16
16 x 2 = 32
32 x 2 = 64
64 x 2 = 128
By the 5th summer he would have 128 plants. n = p x 2
n = plants at the end of summer
p = plants at beginning of summer
Answer:
Required time will be 4 years.
Step-by-step explanation:
T=
(p×r)
(100×SI)
T=
(14000×4)
(100×2240)
T=
56000
224000
T=4
Answer:
A square root of 16 is 4 would represent the truth value. The only square root of 9 is -3 is not true because the square root of 9 could be 3 or -3.
Step-by-step explanation:
Answer:x=2, y=3
Step-by-step explanation:
solving this equation simultaneously
-9x - 2y=-12.............(1)
2x + 5y=-11.. ...........(2)
Using elimination method
Multiply equation 2 by 2 and equation 1 by 5
-45x -10y= -60...........(3)
4x + 10y=-22...............(4)
Subtracting equation 2 from 1
-41x + 0=-82
41x=82
x=82/41
X=2
To find y put x in equation 1
-9x - 2y= -12
-9(2)-2y=-12
-18-2y=-12
-2y=-12+18
-2y=6
Y= 6/2
Y=3
X=2, Y=3
B. y=2x-5
-4y=8x-20
y=-2x+5
2x-5=-2x+5
x=2.5
2x*2.5-5=0
-2x*2.5+5=0
so (2.5,0)
