3 years ago

Which expressions have the same solution as –4(6)?

Mathematics

1 answer:

gogolik [260]3 years ago

8 0

Answer:

-24

Step-by-step explanation:

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3 years ago

Use algebraic rules of equations to predict the solution type to the system of equations. Include all of your work for full cred

svp [43]

Answer:

The system has infinite solutions

Step-by-step explanation:

For a system of two linear equations it is always true that if one equation is a linear combination of another, then the system will have infinite solutions.

Suppose we have the following system:

$ax + by = c\\dx + hy = f$

If there is a number n for which it is fulfilled that

$= n *$

Then the system has infinite solutions.

In this case the system is:

$x + 2y=10\\3x+6y =30$

Observe that:

$= \frac{1}{3}*$

Then $n =\frac{1}{3}$

The system has infinite solutions

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3 years ago

Solve the systemSolve the system by either substitution or elimination 4x + 4y = 20, 2x -2y = -18 by either substitution or elim

valina [46]

{4x + 4y = 20 | ÷4<span>
{2x -2y = -18 | </span>÷2

{x + y = 5
{x -y = -9
--------------
2x = -4
x = -2

x + y = 5
-2 + y = 5
y = 5 + 2
y = 7

The answer is (-2, 7)

7 0

4 years ago