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Ostrovityanka [42]
3 years ago
6

What is the solution of 3x+y=2 & 4y=12-12x?

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
5 0

Answer:

Step-by-step explanation:

3x+y=2............(1)

4y=12-12x........(2)

Making y as subject in (1) and substitute in (2)

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

4(2 - 3x) = 12-12x

8 - 12x = 12 - 12x

12x - 12x = 12- 8

0 = 4

So no solution since variable cancelled out

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Carpet is sold in square yards. How much carpet would a person need to buy for a rectangular room that has dimensions of 10 yard
Dafna1 [17]

Alright, lets get started.

Here the dimensions of the room are given 10 yards by 18 feet.

We need to first convert this 18 feet into yards to make the units same.

3 feets = 1 yards

1 feet = \frac{1}{3} yards

18 feet = \frac{1}{3}* 18 = 6 yards

It means the dimensions of the room is 10 yards by 6 yards.

So, the carpet we need should be equal to the area of the room.

Area of the room is = 10 * 6

Area of the room = 60 square yards

Hence we need 60 square yards carpet for the room. : Answer

Hope it will help :)

7 0
3 years ago
Read 2 more answers
Rewrite each expression more simply: 3y + 8y
ELEN [110]
Since they both have the same variable(y) you can add them together like a regular math problem. So:
3y+8y=11y
So your final answer would be 11y.
6 0
3 years ago
Does anyone know how to do this? i’m suffering
Rina8888 [55]

Answer:

the answer is 5.

Step-by-step explanation:

i did the math and i did it 15 different times and i only got 5 every time

hope i helped...

3 0
2 years ago
I need help with the area of this
Anarel [89]

Answer:

14 inches

Step-by-step explanation:

If you use the formula shown and calculate 1/2 (B x H) you will get 14 in. The base multiplied by the height is 28, and when divided in half, it is 14 in.

7 0
3 years ago
If P(A)=0.4, P(A and B)=0.2,and P(A or B)=0.5, What is P(B)
Vladimir [108]

Answer:

\boxed{\ P(B)=0.3 \ }

Step-by-step explanation:

Hi,

We know that

P(A or B)=P(A)+P(B)-P(A and B)

so P(B)= P(A or B) - P(A) + P(A and B)

so

P(B) = 0.5 - 0.4 + 0.2 = 0.3

thanks

6 0
2 years ago
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