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podryga [215]
3 years ago
5

Solve the simultaneous equations 2x+3y=13 4x-y=-2

Mathematics
1 answer:
kherson [118]3 years ago
4 0
From eq1 ,
2x = 13-3y
x = 6.5-1.5y (eq 3)
sub eq 3 into eq2,
4(6.5-1.5y)-y=-2
26-6y-y=-2
-6y-y=-2-26
-7y=-28
7y=28
y=4 ( eq 4 )
sub eq4 into eq3 ,
x=6.5-1.5(4)
x=6.5-6
x=0.5


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Answer:

The cost before tax with tip is $15.21.

Step-by-step explanation:

To calculate percentage, take the percent (17%) and take its decimal form. This means 17% is 0.17 (like 50% would be 0.5). multiply the number you want the percentage of by the decimal form. 13*0.17=2.21. Add this to the cost before tax and before tip. 13.00+2.21=15.21. The cost before tax with tip is $15.21.

3 0
3 years ago
allowing 20% discount on the marked price of a watch the value of the watch will be Rs 6328 when a vat 13%is added ,find the fin
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Step-by-step explanation:

Let the marked price of a watch be =₹x

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7 0
3 years ago
In a company 60% of the workers are men is 880 women work for the company how many workers are there in all
borishaifa [10]
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Answer:

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Step-by-step explanation:

Given Bryan sold 9 more flowers than Elan

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Leno4ka [110]

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184

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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