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Juliette [100K]
3 years ago
14

Solve the system of linear equations by elimination. 6x-4y=18 3x+2y=-3

Mathematics
1 answer:
Reptile [31]3 years ago
3 0

Answer:

y = -3

x = 1

Step-by-step explanation:

6x-4y=18

3x+2y=-3, so 3x = -2y - 3, then x = (-2y - 3)/3

substitute for x:

6((-2y - 3)/3) - 4y = 18

2(-2y - 3) - 4y = 18

-4y - 6 - 4y = 18

-8y - 6 = 18

-8y = 24

y = -3

x = (-2(-3) -3)/3 = 1

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Find gf(2) if f(x)=2x+1,g(x)=3x-2
natali 33 [55]

Answer:

13

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To find g f(2) , evaluate f(2) and substitute the value obtained into g(x)

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5 0
3 years ago
Calculating area of rectangle.
Artemon [7]

Answer:

Your measurements; Area = 216.108 cm²

Another student's measurements; Area = 216.9404 cm²

- Difference in area could be as a result of human error or perhaps that they made use of different measuring tools.

Step-by-step explanation:

For Your measurements;

Length of rectangle = 20.70 cm

Width of rectangle = 10.44 cm

Area of rectangle is given by; A = length × width = 20.7 × 10.44 = 216.108 cm²

For Another student's measurements;

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Width of rectangle = 10.46 cm

Area = 20.74 × 10.46

Area = 216.9404 cm²

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7 0
3 years ago
I need help answering
sergejj [24]

Answer:

I think its the second one, im not quite sure.

6 0
3 years ago
1)Make an area model(Table) or a tree diagram to model all the possible combinations in this situation. 2)What is the theoretica
Ann [662]

Answer:

Example:

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a) Construct a probability tree of the problem.

b) Calculate the probability that Paul picks:

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Solution:

tree diagram

a) Check that the probabilities in the last column add up to 1.

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P(second ball black)

= P(B, B) or P(W, B)

= P(B, B) + P(W, B)

6 0
3 years ago
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