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aleksandr82 [10.1K]
2 years ago
14

Solve the following system of equations using the elimination method. 4x + 2y = 12 4x + 8y = –24

Mathematics
1 answer:
Hunter-Best [27]2 years ago
4 0

Answer:

my answer for y is -6, x is -10

Step-by-step explanation:

just eliminate the -4s by subtracting them and you will get the value of y.

now you can use either eqn (I) or (ii) which are first and second.

anyone you decide to choose just replace y by the value you got and you will get the value of x.

pls try to do it buddy you can

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-3.6,-5.4,-8.1,-12.15 arithmetic or geometric or neither.
Brums [2.3K]

Answer:

Geometric Sequence

Step-by-step explanation:

1. Check the difference.

The difference between the 1st and 2nd term

( - 5.4) - ( - 3.6) =  - 1.8

The difference between the 2nd and 3rd term

( - 8.1) - ( - 5.4) =  - 2.7

The difference is not the same. Therefore, it is not an arithmetic sequence.

2. Check the ratio

The ratio between the 1st and 2nd term

( - 5.4) \div ( - 3.6) = 1.5

The ratio between the 2nd and 3rd term

( - 8.1) \div ( - 5.4) = 1.5

The ratio is the same. Therefore, it is a geometric sequence.

8 0
3 years ago
If a square has a length of 3x-y, what is its area?
SVEN [57.7K]

Answer:

  9x² -6xy +y²

Step-by-step explanation:

The square of the binomial can be written directly using the relationship ...

  (a +b)² = a² +2ab +b²

where you have a=3x and b=-y.

  area = (3x -y)² = (3x)² + 2(3x)(-y) + (-y)²

  area = 9x² -6xy +y²

7 0
3 years ago
Does anyone know how to add a pic to your questions?​
Stolb23 [73]

Answer:

you press the paper clip symbol

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
There are 5 times as many males as females on the maths course at university. What fraction of the course are female?
Valentin [98]

Answer:

1/5 are females i think

Step-by-step explanation:

4 0
3 years ago
What's the number in the green box​
marishachu [46]

Answer:

Kinda confusing but, I think it is

a=7

b=9

c=19

d=7

sorry it took a while it was confusing and plz give brainliest

Step-by-step explanation:

5 0
3 years ago
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