Hello,
(3+2i)z+1-2i=2iz-2+i
<==>(3+2i-2i)z=-2+i-1+2i
<==>3z=3(-1+i)
<==>z=-1+i
What must be subtracted from each term of the ratio 3:7 so that the ratio becomes 2:5?
My attempt: Let two numbers be 3x and 7x. So, 3x−y7x−y=25⟹15x−5y=14x−2y⟹y=x3. But the answer is given as 13 only.
I wish somebody could provide some clarifications.
Answer:
42.57
Step-by-step explanation:
Add all of the numbers together:
10+ 39+ 71+ 39+ 76+ 38+ 25=298
Divide by the total numbers that are there:
298÷7=42.57
Hope this helps ^-^
Answer:
Cost of one candy = 80 L.L.
Step-by-step explanation:
Let "x" represent cost of a candy
Cost of 12 candies = 12x
Cost of a chocolate bar = 1,250 L.L.
Total cost = 2,210 L.L.
The following equation represents the scenario given:
1,250 + 12x = 2,210
Solve for x (cost of a candy)
1,250 + 12x - 1,250 = 2,210 - 1,250 (subtraction property of equality)
12x = 960
Divide both sides by 12
12x/12 = 960/12 (division property of equality)
x = 80
Cost of one candy = x = 80 L.L.
Answer:
$3.62
Step-by-step explanation:
Given that pair of jeans went for $32.50 and a shirt for $12.75 then the total cost was
Cost =32.5+12.75=$45.25
Sales tax is given as 8%, when expressed kn decimal, this is equivalent to 8/100=0.08
Amount of sales tax is given by multiplying the total vost of outfit by the sales tax in decimal
Sales tax=0.08*$45.25=$3.62
Therefore, the sales tax equals $3.62
