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Vinil7 [7]
3 years ago
13

1. Sоlvе х^2 = -169.

Mathematics
1 answer:
lys-0071 [83]3 years ago
7 0

Answer:

x=13i, -13i

Step-by-step explanation:

Take the square root of both sides which gives you plus or minus the square root of -169.  Then you get plus or minus 13times the square root of negative 1. Now you can say that x equals positive or negative 13i

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Juan purchased an antique that had a value of \$200$200dollar sign, 200 at the time of purchase. Each year, the value of the ant
garri49 [273]

Answer:

<h2>The value of a is (\frac{11}{10} )^{222}.</h2>

Step-by-step explanation:

At the time of purchase, the value of the antique is $200.

After one year the value will increase 10%.

Hence, after one year, the value of the antique will be \frac{110}{100} \times200 = 220.

Similarly, after two year, the value will be 200\times (\frac{110}{100} )^{2}.

Thus, 222 years after purchase, the value of the antique will be 200\times (\frac{110}{100} )^{222} = 200\times (\frac{11}{10} )^{222}.

5 0
3 years ago
Macario is making 12 pounds of nut mixture with macadamia nuts and almonds. Macadamia nuts cost $9 per pound and almonds cost $5
Fynjy0 [20]

Marcario should use  4 pounds of macadamia nuts and 8 pounds of almonds.

Explanation

given

cost of macadamia nuts per pound=$9

cost of almond nuts per pound=$5.25

cost of the mixture per pound=$6.5

total pounds of the mixture to be made=12

let the pounds of macadamia nuts=x

pounds of almond nuts=y

total pounds of nuts=x+y=12

x+y=12(1)\\9x+5.25y=6.5(x+y)\\\\9x+5.25y=6.5*12\\9x+5.25y=78(2)

solving (1) and (2)

x=4

y=8

5 0
3 years ago
Yani has a box of pencils: 5 pencils are green, 12 are brown, 6 are yellow, and 4 are blue. If he selects a pencil at random, wh
dexar [7]
It would be blue I believe
8 0
3 years ago
Use properties of equality to Solve 7+3x = 5x+13 for x
mario62 [17]
We basically have to cancel values on both sides until they are both on common ground.

7 + 3x = 5x + 13

-7 from both sides...

3x = 5x + 6

-5x from both sides...

-2x = 6

/-2 from both sides...

x = -3


Hope this helps!
8 0
3 years ago
If A= 5x – 2 and B = 3x + 4 , what is the value of x?
V125BC [204]
X = 3

5(3) - 2 = 13

3(3) + 4 = 13
8 0
3 years ago
Read 2 more answers
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