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Scrat [10]
3 years ago
12

2. How many solutions does this system have? 2x + y = 3, 6x = 9 – 3y

Mathematics
2 answers:
hammer [34]3 years ago
6 0

Answer:

The system of equation has infinite solution.

C is correct.

Step-by-step explanation:

We are given system of equation

2x + y = 3

6x = 9 – 3y

First we re-write the second equation in standard form

So, we add 3y both sides

6x+3y=9 ---------------- (2)

2x+y = 3-----------------  (1)

Multiply equation 1 by 3

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

6x+3y=9

Subtract new equation from 2nd equation

6x-6x + 3y-3y = 9-9

0=0

LHS=RHS

This is true statement. If statement is true then infinite number of many solution.

Hence, The system of equation has infinite solution.

lesya [120]3 years ago
5 0
2x + y = 3
6x = 9 - 3y
        ↓
2x + y = 3
6x + 3y = 9

3(2x + y = 3)
3(2x) + 3(y) = 3(3)
6x + 3y = 9

There is an infinite number of solutions in the system (the answer is C).
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Answer:

9x -5

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4 0
2 years ago
Come up with a situation in which you would have to calculate the surface area or volume of a solid
Alika [10]

Answer:

You work at the local pool. The pools cleaners have emptied the pool and you need to refill it. The pool is a rectangular prism with a height of 10 ft, a length of 40 ft, and a width of 10 ft. Whats the volume of the pool so you can figure out how much water needs to go in it.

Step-by-step explanation:

You work at the local pool. The pools cleaners have emptied the pool and you need to refill it. The pool is a rectangular prism with a height of 10 ft, a length of 40 ft, and a width of 10 ft. Whats the volume of the pool so you can figure out how much water needs to go in it.

5 0
2 years ago
The prism shown has a volume of 35 cm.
Vesna [10]

Answer:

1.25cm

Step-by-step explanation:

<em>Complete question:</em>

The prism has a volume of 35 cm cubed  workout h, the height of the triangular cross section

<em>length=7cm</em>

<em>width = 4cm</em>

<em></em>

The volume of the prism is expressed as;

Volume = Base Area * Height

Given

Volume of the prism = 35cm^3

Base Area = length * width

Base Area =  7cm * 4cm

Base Area = 28cm^2

Substitute the given values into the formula

35 = 28* Height

Cross multiply

35 = 28 * Height

35 = 28 Height

Height = 35/28

Height = 1.25cm

Hence the height of the triangular cross section is 1.25cm

7 0
2 years ago
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klasskru [66]

Answer:

20-15z

Step-by-step explanation:

-1+21-15z

20-15z

6 0
2 years ago
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masya89 [10]

Answer:

b

Step-by-step explanation:

6 0
2 years ago
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