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ss7ja [257]
3 years ago
10

Find the solution to the following system of equations using the addition method. 2x - y = 5 x + y = 13

Mathematics
2 answers:
leva [86]3 years ago
6 0

Answer:

x = 6

y = 7

Step-by-step explanation:

2x - y = 5

x + y = 13

2x - y = 5

y = 2x - 5

x + y = 13

x + 2x - 5 = 13

3x - 5 = 13

3x = 18

x = 6

y = 2x - 5

y = 2 ( 6 ) - 5

y = 7

zhenek [66]3 years ago
3 0

Answer:

Step-by-step explanation:

2x - y = 5

x + y = 13

3x = 18

x = 6

6 + y = 13

y = 7

(6,7)

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lana [24]

Given Information:

Principle amount = P = $6,000

Interest rate = r = 4% = 0.04

Period in years = t = 5

Required Information:

How much interest will he earn in 5 years = ?

Answer:

Amount of interest = $1,299.92

Step-by-step explanation:

Using the formula given in the question,

B = P(1 + r )^{t}

Where B is the final amount, P is the initial amount, r is the interest rate and t is the number of years

B = P(1 + r )^{t}\\\\B = 6,000(1 +  0.04)^{5}\\\\B = 7,299.92

The amount of interest earned is

Amount \:of\: interest = B - P \\\\Amount \:of \:interest = 7,299.92 - 6,000\\\\Amount \:of \:interest = 1,299.92

Therefore, Quincy has earned $1,299.92 in terms of interest by investing  $6,000 in a savings account at the rate of 4% annual interest for a period of 5 years.

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Answer:

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