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2 years ago

2x+3y=10 -6x-9y=30 elmantation method

Mathematics

1 answer:

Assoli18 [71]2 years ago

5 0

Answer:

• First assign any label to the equations:

${ \tt{2x + 3y = 10 - - - \{eqution \: (a) \}}} \\ { \tt{ - 6x - 9y = 30 - - - \{equation \: (b) \}}} \\$

• Multiply equation (a) by 3

$\dashrightarrow \: { \tt{3 \times (2x + 3y = 10)}} \\ \dashrightarrow \: { \tt{6x + 9y = 30}}$

• Sum up the result with equation (b)

${ \underline{ + { \tt{ \binom{6x + 9y = 30}{ - 6x - 9y = 30} }}}} \\ { \tt{0x + 0y = 60}}$

Answers:

No solutions

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3 years ago

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4 years ago

Read 2 more answers

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Answer:

Matthew's money will double fastest in 6 years.

Step-by-step explanation:

The complete question is

Answer the question for each scenario by applying the rule of 72. How many years will it take each situation to double its money? Situation A: Matthew invests $5,000 in an account with a compound interest rate of 12%. Situation B: Morgan invests $2,500 in an account with a compound interest rate of 8%. Situation C: Maysen invests $10,000 in an account with a compound interest rate of 4.5%. Whose money will double fastest?

we know that

The Rule of 72 is a simple way to determine how long an investment will take to double given a fixed annual rate of interest. By dividing 72 by the annual rate of return.

Situation A: Matthew invests $5,000 in an account with a compound interest rate of 12%

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Situation B: Morgan invests $2,500 in an account with a compound interest rate of 8%.

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7 0

3 years ago

Someone help please i honestly don’t understand

Ivan

Answer:

196 m^2

Step-by-step explanation:

Length of the side of the square = 14 m

area= 14×14 = 196 m^2

hope it helps...

have a great day!!

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3 years ago