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bixtya [17]
3 years ago
15

The solution set for the equation x - 6x + 10 = 0 is

Mathematics
1 answer:
Oxana [17]3 years ago
8 0

Answer:

{3-i, 3+ i}

Step-by-step explanation:

hello : the equation is :  x²-6x+10 =0

because : (3+i)²-6(3+i)+10 = 9+6i+i²-18-6i+10 =9+6i-1-18-6i+10 =0...right

same method for 3-i... (all quadratic equation have two conjugate solution)

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I have 47 nickels and dimes worth $4.20. How many of each type of coin do I have?
soldi70 [24.7K]

Answer:

37 dimes and 10 nickels

Step-by-step explanation:

let d = # dimes

let n = # nickels

we can set up a system of equations:

n + d = 47

.05n + .10d = 4.2

if we solve the first equation for 'n' we get:  

n = 47-d

now we can substitute this in for 'n' in the second equation:

.05(47-d) + .10d = 4.2

2.35 - .05d + .10d = 4.2

2.35 + .05d = 4.2

subtract 2.35 from each side to get:

.05d = 1.85

d = 1.85÷.05

d = 37

if d+n = 47 and d=37 then n = 10

Check:

.05(10) + .1(37) should equal 4.2

.50 + 3.7 = 4.2  [It Checks Out]

6 0
2 years ago
30 POINTSSS!!!!
NARA [144]
The answers are B and C
3 0
3 years ago
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Whats three billion plus five trillion lol
Ira Lisetskai [31]

Answer:

5,003,000,000,000

Step-by-step explanation:

6 0
3 years ago
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Truckers have to travel hundreds of miles to ensure food is transported. How much would 150 gallons of diesel cost March 20th an
zysi [14]

Answer:

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Step-by-step explanation:

7 0
3 years ago
{4x-2y&lt;0}<br> {5x+3y&lt;-11}
kkurt [141]
Finding the sum for y in the equation  4x-2y< 0
so 4x - 2y = 0
4x - 2y - 4x would equal 0 - 4x
-2y = -4x
-2y divided by -2 equals -4x / -2
That means y=2x
3 0
3 years ago
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