Okay so I wont be able to show the row here but I will try my best.
7(5x-4y=28) = 35x-28y=196
-5(7x+5y=18) = -35x-25y=-90
= -53y=106
= y=-2
5x-4(-2) =28
5x+8=28
5x=20
x=4
Answer:
It will be 180 because 2/5 of means 2 in 5 then in ,450 you need to know 2/5 of 450 which gives you 180
Answer:
$14,800 at 10.5%
$38,850 at 12%
Step-by-step explanation:
Investment at 10.5% (x):
(0.12[$53,650 - x])/0.105x = 3
$6,438 - 0.12x = 0.315x
0.435x = $6,438
x = $14,800
Investment at 12%:
= $53,650 - $14,800
= $38,850
Answer: Investments: @ 10.5%, $14,800; @ 12%, $38,850
Proof: (income from 1st is 1/3 that of the income from the 2nd):
= (0.105[$14,800])/(0.12[$38,850])
= $1,554/$4,662
= 1/3
Answer:I will be a mode
Step-by-step explanation:
Answer:
2^5
Step-by-step explanation:
2^5 = 32
3^3=27
1^10 =1
5^2 = 25