All categories

3 years ago

How do you use the additive inverse to evaluate an expression that uses subtraction?

Mathematics

2 answers:

wariber [46]3 years ago

4 0

Answer:

You use additive inverse to combine like terms that are on opposite sides of the equation.

Step-by-step explanation:

Harlamova29_29 [7]3 years ago

3 0

You use additive inverse to combine like terms that are on opposite sides of the equation.
ie.
3x + 1 = 6x -12
You use additive inverse to move -12 to the +1

You might be interested in

Marco is 8 years younger than his brother Paolo. If their product of their ages is 105, how old is Marco? plz help

Nina [5.8K]

Answer:

Marco's age is 7 years old

Step-by-step explanation:

Let

x ----> Marco's age

y ----> Paolo's age

we know that

$x=y-8$ ----> $y=x+8$ ----> equation A

$xy=105$ ----> equation B

substitute equation A in equation B

$x(x+8)=105$

$x^2+8x-105=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+8x-105=0$

$a=1\\b=8\\c=-105$

substitute in the formula

$x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(-105)}} {2(1)}$

$x=\frac{-8(+/-)\sqrt{484}} {2}$

$x=\frac{-8(+/-)22} {2}$

$x=\frac{-8(+)22} {2}=7$

$x=\frac{-8(-)22} {2}=-15$

Remember that the solution cannot be a negative number

The solution is x=7

therefore

Marco's age is 7 years old

4 0

3 years ago

Line JM intersects line GK at point N. Which statements are true about the figure? Check all that apply.

ki77a [65]

See attached image

First, we must know this: Complementary angles are two angles whose sum is equal to 90°, while supplementary angles are two angles whose sum is equal to 180°. That been said, the only statement which is true is the second statement, <span>MNL is complementary to KNL

Reasons why others are False
</span>GNJ is supplementary to JNK, not complementary
MNG is supplementary to GNJ, not complementary
LNJ (not KNJ) <span>is supplementary to MNL
</span>GNM is equal to JNK, not supplementary

8 0

3 years ago

Read 2 more answers

A rectangle is a four sided flat shape where every interior is a right angle. Therefore, opposite sides are parallel and consecu

atroni [7]

The coordinates for point R will be (-1, -6). This is because a rectangle has opposite sides and as you plot your rectangle with these defines points along with that of R, you will be able to successfully achieve a perfect rectangle.

6 0

3 years ago

Read 2 more answers

What is the equation of the line that passes through the points ( 5,-2) and (-5,0)

Novosadov [1.4K]

Answer:

y=-1/5x-1

Step-by-step explanation:

4 0

2 years ago

Hello there when i looked for an answer on your site i found it but it was wrong

Ray Of Light [21]