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4 years ago

Which system of equations represents the matrix shown below?

Mathematics

1 answer:

svetlana [45]4 years ago

4 0

Answer:

Step-by-step explanation:

just compare the augmented matrix to the possible answers and you will see it the option D

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PLS HELP ITS AN EMERGENCY

anastassius [24]

The answer would be a

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4 years ago

A bag contains green marbles and blue marbles,

dexar [7]

There are 13 green marbles in the bag.

Step-by-step explanation:

Total marbles = 18

Let,

Green marbles = x

Blue marbles = y

According to given statement;

The number of green marbles is 2 less than 3 times the number of blue marbles.

x = 3y-2 Eqn 1

x+y=18 Eqn 2

Putting value of x from Eqn 1 in Eqn 2;

$(3y-2)+y=18\\3y-2+y=18\\4y=18+2\\4y=20$

Dividing both sides by 4

$\frac{4y}{4}=\frac{20}{4}\\y=5$

Putting y=5 in Eqn 1

$x=3(5)-2\\x=15-2\\x=13$

There are 13 green marbles in the bag.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

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4 years ago

Find the equation of a line with each of the following characteristics.

Afina-wow [57]

Answer:

y=3x-1

Step-by-step explanation:

In parallel lines, the slope stays the same and the y-intercept changes. Hope this helps and I'm always here if you need me!

3 0

4 years ago

If a polynomial function f(x) has roots 0, 4, and 3 + square root 11 , what must also be a root of f(x)?

Galina-37 [17]

3-√11
This function is evidently a quartic - a function with 4 roots. The last root has been found using the quadratic formula however, the answer always comes in pairs because the formula is
{b+√(b^2 - 4ac)}/2a and {b-√(b^2 - 4ac)}/2a. Therefore the other root must be 3-√11

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4 years ago

Read 2 more answers

A line passes through the points (7, 10) and (7, 20).

Cerrena [4.2K]

This means the slope of the line is x=7

7 0

3 years ago