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2 years ago

What error did the student make?? PLEASE HELP ME

Mathematics

1 answer:

gregori [183]2 years ago

4 0

Answer:

He did an error because he multiplied equation 2 wrongly.

The correct multiplication should have been:

-6x + 9y = 6 Multiply equation by 2 by 3

Step-by-step explanation:

Given the system of equations

3x-5y=4

-2x+3y=2

This is what student solved

6x - 10y = 8 Multiply equation 1 by 2

-6x + 3y = 6 Multiply equation by 2 by 3

_________

-7y = 14

y = -2

He did an error because he multiplied the equation 2 wrongly.

The correct multiplication should have been:

-6x + 9y = 6 Multiply equation by 2 by 3

NOW, HERE IS THE CORRECT VERSION

6x - 10y = 8 Multiply equation 1 by 2

-6x + 6y = 6 Multiply equation by 2 by 3

_________

-4y = 14

y = -2/7

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Mike has a credit rating of 720. Tyler has a credit rating of 560. Mike and Tyler apply for identical loans from Park Bank. Mike

Eva8 [605]

Answer:

6.2%

Step-by-step explanation:

Credit rating is an evaluation of the credit risk of a borrower, that how often a person is going to repay their debt, by credit rating it predicts the ability of the debtor to payback.

Mike has credit rating = 720

Tyler has credit rating = 560

Both are approved for loan. Mike's Credit score is higher, which means he is a much safer debtor as compared to Tyler. Mike will be able to pay back much easily than Tyler. Therefore Mike interest rate is 3.2%

Interest rate of Tyler is higher as he is not that trusted and has low Credit rating. Tyler is approved for a loan that charged 3 percentage points higher because of his inferior credit rating so it interest on the loan will be

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4 0

3 years ago

Read 2 more answers

6÷x (1+2)=1 please tell me how to work this out

Vinvika [58]

First of all 1+2=3 which leads to 6:3x=1 3x=6:1 3x=6 X=2

5 0

3 years ago

a cell phone company has a basic monthly plan of $40plus $0.45 for many minutes ised over 700. John was charged a total of $48.1

jonny [76]

Cost of month plan = $40

Cost of minutes used = $0.45 after 700 minutes

Total cost = $48.10

Let x be the total minutes used
Total cost = 40 + 0.45(x - 700)

------------------------------------------------------------------
Form the equation and solve x
------------------------------------------------------------------
40 + 0.45(x - 700) = 48.10
40 + 0.45x - 315 = 48.10
0.45x - 275 = 48.10
0.45x = 48.10 + 275
0.45x = 323.10
x = 323.10 ÷ 0.45
x = 718

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Answer: John had used 718 mins this month
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8 0

3 years ago

Write $2.161616 as a fraction and mixed number

Alona [7]

Fraction is 2.161616/1000000
mixed number is 2 161616/1000000

4 0

3 years ago

Pleaaaase i neeed heeeelp

4vir4ik [10]

Answer:

b. (x-3) / (x+1)

c. x/(x+5)

Step-by-step explanation:

b. (x+2)(x-3) / (x+1)(x+2)

c. x(x - 5) / (x + 5 ( x - 5)

= x / x+5

4 0

2 years ago