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siniylev [52]
2 years ago
6

PLEASE HELP ASAP WILL CHOOSE BRAINLIEST FOR CORRECT ANSWER GIVING 20 PTS

Mathematics
2 answers:
tensa zangetsu [6.8K]2 years ago
8 0

Answer: A. To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.

System A :

-x - 2y = 7 ..........(1)

5x - 6y = -3 ..........(2)

If we multiply the first equation by 5, then we will get :

5(- x - 2y) = 5(7)

⇒ - 5x - 10y = 35 ........... (3)

Now the Sum of equation (2) and equation (3) is:

⇒ Sum :  

Now if we replace the second equation in system A with this  , then we will get the system B.

Solution of system B:

First we will take the second equation as there is only one variable 'y'. So, we will solve that equation for 'y'

Now for solving 'x', we will plug y= -2 into the first equation

So, the solution of system B is (-3, -2), that means the solution of both systems are same.

Step-by-step explanation:

Eddi Din [679]2 years ago
6 0

Answer: D:

To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.

Step-by-step explanation:

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A family buys a studio apartment for $180.00 They pay a down payment of $54.00, Their down payment is what percent of the purcha
Volgvan

Answer:

Part A: 30%

Part B: 45000%

Step-by-step explanation:

To get your answer, you have to divide whatever number the down payment is by the number the family is supposed to pay for the studio apartment.

Part A: You need to divide $54.00 by $180.00, when you do that, you get the answer 0.3. You convert it to percentage by doing 0.3 multiplied by 100 which give you 30. Put a percent behind it and you have 30% as your final answer.

Part B: You need to divide 81,000 by 180 which gives you 450. Then you then have to do 450 multiplied by 100 which gives you 45,000. You then add the percentage behind and you have 45000% as your final answer.

3 0
2 years ago
Read 2 more answers
Help!!! Please will give points
galben [10]

Option D:

The solution to the equation is y = 27.

Solution:

Given equation:

$\frac{1}{3} y=9

To solve this equation:

$\frac{1}{3} y=9

Multiply by 3 on both sides of the equation.

$3 \times \frac{1}{3} y=9 \times 3

3 in the numerator and denominator get canceled.

y = 9 × 3

y = 27

The solution to the equation is y = 27.

Option D is the correct answer.

3 0
3 years ago
Please help.<br> Algebra.
iogann1982 [59]
The answer is b (2,-5)
4 0
2 years ago
i really need help with this oneeeee.Mickey went to the mall to buy new sneakers. the store was having a 60% off sale. Mickey pa
Ray Of Light [21]

Answer:

180                                                  

Step-by-step explanation:

3 0
3 years ago
Solve the inequality
const2013 [10]
X < -11/9 is the answer

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