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Shkiper50 [21]
3 years ago
7

2x−4y=20 whats the answer

Mathematics
2 answers:
Whitepunk [10]3 years ago
7 0

2x-4y=20

Add both sides by -4y

2x=20+4y

Then divide both sides by 2 and you get your answer

x=2y+10

alexdok [17]3 years ago
4 0

The answer is

x=10+2y

Steps:

2(x-2y)=20

x-2y=20/2 (in fraction form 20/2)

x-2y=10

X=10+2y

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a que taxa mensal devo empregar um capital de r$ 20.000 para que no fim de 10 meses renda 18.000 de juros
Serhud [2]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

\to 18000=2000 \times i \times 10 \\\\\to 18000=200000 \times i\\\\\to i=\frac{18000}{200000}\\\\\to i= \frac{18}{200}\\\\  \to i= \frac{9}{100}\\\\ \to 0.09\\\\

Calculating the percentage:

\to 0.09\times 100=9\%

8 0
3 years ago
Find the product of (7m+8n)(7m−8n)
Anon25 [30]

Answer:

7m-7m=8n+8n

m=16n

Step-by-step explanation: U must first link the like terms so in order to do so u must bring over the 7m, now before u brought over the 7m it was a positive 7m now that your bring it over it turns negeitive and the same goes for the term 8n when u carry that term over it turns positive now dont let the subtraction sign foul u it still negative as long as its beside the term it is going to be negative guys dont  forget that, now on to the next step after u cross over and change signs u start to work out now that the like terms are equal u dont  need to worry about them because its given u the go ahead to workout so your main focus is on the subtracting the 7's which  is 0 and leaves u with m u dont  have to put them but i dont recommend it the u start on the next side u and the 8's which is 16 and u put bk the n u have to put bk the terms its important and thats  how u get m=16n.

6 0
3 years ago
A taxi in new york city charges a flat fee of $3.50, plus $0.75 for every mile traveled. How much would a 6 mile taxi ride cost?
REY [17]
So, you start off with $3.50 you travle 6 miles every mile is 0.75 that means you would need to multiply 6 by 0.75.

6
0.75
it equals 4.5

So we have $4.50 we need to add $3.50 and in total $0.50 plus $0.50 would be a dollar + 3 dollars plus $4 would be 7 so 7 +1 is 8. and 8 is the answer.
7 0
3 years ago
Convert this Percent to a Decimal 56% <br> A:0.56<br> B: 56<br> C:5.6<br> D:.65 <br> TwT
kirill115 [55]

Answer:

A

Step-by-step explanation:

Move the decimal point 2 spaces to the left to convert from percent to decimal.

3 0
3 years ago
Read 2 more answers
2
Savatey [412]

Answer: b

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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