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Vsevolod [243]
3 years ago
15

Solve 2x^2+3x=20. Please help

Mathematics
2 answers:
dangina [55]3 years ago
5 0

Answer:

Exact form: x=5/2,-4

Decimal form: x=2.5, -4

Mixed number form: x=2 1/2, -4

Step-by-step explanation:

Vinvika [58]3 years ago
5 0

Answer:

the answer would be x= -4

Step-by-step explanation:

-4

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prohojiy [21]

The amount deposited in the account that earns 3.6% interest is $57,600 and the amount  deposited in the account that earns 2.1% interest is $192,400

The first step is to determine the amount of interest he earned in total over a year

Interest = Amount in the account - amount deposited

$256,114 -  $250,000 = $6,114

The second step is to formulate two set of equations and use simultaneous equation to solve the question

a + b = $250,000 equation 1

0.036a + 0.021b = $6,114 equation 2

Where a represent amount deposited in the account that earns 3.6% interest

b  represent amount deposited in the account that earns 2,1% interest

Multiply equation 1 by 0.036

0.036a + 0.036b = 9000 equation 3

Subtract equation 2 from 3

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divide both sides of the equation by 0.015

b = $192,400

Substitute for b in equation 1

a + 192,400 = 250,000

a = 250,000 - 192400

a = $57,600

To learn more about simultaneous equations, please check: brainly.com/question/23589883?referrer=searchResults

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Write a real world situation of |x-14|=3
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