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3 years ago

15

Is the equation 8 + 4= -5 + 7 true false or open and why

2 answers:

zysi [14]3 years ago

4 0

This is false, because the equation is then 12=2, which is incorrect.

Hope this helps!

~ThePirc

slega [8]3 years ago

4 0

1. Solve
8 + 4 = -5 + 7
12 = 2

Obviously 12 doesn't equal 2 so the equation is false. Here are the definitions:
True: The equation is true.
Example: 2 =2

False: The equation is false or not true.
Example: -2 = 2

Open: The equation is true or false depending on what the variable is.
Example: 2x = 2

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3 years ago

I need help with #46!!!!

Gre4nikov [31]

Remark

There are two formulas for doing this. I'll use the one that does not involve the slope. I think it will be easier for you to understand.

Step One

Decide which point is (x1,y1)

Since point P is 2/5 the way up from point A, we will call (x1,y1) point A

Step Two

Write the givens.

Point(A) = (-2,-3)

Point(B) = (3,2)

Step Three

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Sub and solve.

-2 + 2/5 *(3 - - 2) , -3 + 2/5*(2 - -3)

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-2 + 2 , - 1

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If this turns out to be incorrect please notify me.

3 0

3 years ago

Which expression is equivalent to (3x-5y)+ (x + 2 y)?

Stells [14]

Question is Incomplete; Complete question is given below.

Which expression is equivalent to (3x-5y)+(x+2y)?

1. 4x-7y

2. 4x-3y

3. 4x+3y

4. 4x+7y

Answer:

2. $4x-3y$

Step-by-step explanation:

Given:

$(3x-5y)+(x+2y)$

We need to simplify the given expression;

Solution on simplifying the given expression we get;

First we will apply distributive property to remove the parenthesis we get;

$3x-5y+x+2y$

Now Combining the like terms together we get;

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Now adding and subtracting like terms we get;

$4x-3y$

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