All categories

2 years ago

Solve the equation by the elimination method..!!1. 3x+ 4y= 10 & 2x- 2y = 2

Mathematics

1 answer:

siniylev [52]2 years ago

4 0

Step-by-step explanation:

3x + 4y =10_____(I)

2x - 2y=2______(II)

Multiple the eqn( II )to 2.

2(2x - 2y =2)

4x - 4y=4_____(III)

Subtracting the eqn (I)to (II)

 3x + 4y=10

 4x - 4y=-4

 7x =14

 x =14/7

 x = 2

put the value of x in eqn (I)

 3(2)+4y=10

You might be interested in

10) A new car is available in a sedan model and

Dafna11 [192]

Answer:

Option (C) n = 256

Therefore, there are 256 ways to select a car with 2 car models, 8 different colors and any combinations of 4 optional features.

Step-by-step explanation:

A new car is available in a sedan model and a hatchback model.

So that means customers can select the model of the car in,

n₁ = 2 ways

It is available in eight different colors.

After selecting the model, customers can select the color of the car in,

n₂ = 8 ways

Customers can choose to add any combination of four optional features.

After selecting the color, customers have the choice to add any combination of 4 optional features,

n₃ = 4² = 16 ways

Which means that there are 16 different ways to add 4 optional features e.g.

1. 0, 0, 0, 0

2. 0, 0, 0, 1

3. 0, 0, 1, 0

4. 0, 0, 1, 1

and the list goes on to 16 different ways.

Now the total ways to select a car is given by

n = n₁*n₂*n₃

n = 2*8*16

n = 256

Therefore, there are 256 ways to select a car with 2 car models, 8 different colors and any combinations of 4 optional features.

6 0

3 years ago

Please help me = lazy

forsale [732]

Answer:

1.) $13\frac{3}{10}\\$

2.) $11\frac{3}{4}\\$

3.) $11\\$

4.) $12\frac{1}{30}$

5.) $7\frac{11}{15}$

6.) $5\frac{4}{5}$

Step-by-step explanation:

I did 6 problems for you. You can now do the other 4 problems and see how I did it. You need to have the same denominator and the add the fractions together.

4 0

2 years ago

Identify the minimum or maximum value and the domain and range of the function

sdas [7]

Y = 2 ( X - 3 ) ^ 2 - 4 =-4

6 0

2 years ago

Write the ratio 69:75 as a fraction, decimal,and a percent.

LekaFEV [45]

As a fraction, 69:75 would become 96/75
As a decimal 69:75 would become 0.92
As a percentage 69:75 would become 92%
Hope this helps :)

3 0

3 years ago

Read 2 more answers

What is the value of f(5) ?

qwelly [4]

Answer:

243

Step-by-step explanation:

6 0

2 years ago

Solve the equation by the elimination method..!!1. 3x+ 4y= 10 & 2x- 2y = 2​

Solve the equation by the elimination method..!!1. 3x+ 4y= 10 & 2x- 2y = 2