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kakasveta [241]
3 years ago
9

How do you know which direction to move on a number line when adding integers?​

Mathematics
1 answer:
Doss [256]3 years ago
6 0

Step-by-step explanation:

To add integers on the number line, you move forward, and you face right (the positive direction) when you add a positive number. As with positive numbers, to add negative integers on the number line, you move forward, but you face left (the negative direction) when you add a negative number.

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What is the simplest form of the expression -2x^2(x+5)+x(2x^2-10x)+x
Softa [21]
For this case we have the following expression:
 -2x ^ 2 (x + 5) + x (2x ^ 2-10x) + x
 Rewriting we have:
 -2x ^ 3 - 10x ^ 2 + 2x ^ 3 - 10x ^ 2 + x
 Grouping terms with the same exponent:
 x ^ 3 (-2 + 2) + x ^ 2 (-10 - 10) + x
 -20x ^ 2 + x
 Rewriting:
 x (-20x + 1)
 Answer:
 
The simple form of the expression is:
 
x (-20x + 1)
4 0
3 years ago
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the side length ofthe square porch behind macis house is (3x + 2) feet. The porch has a perimeter of (14x - 2) feet. What are th
andriy [413]

Answer:

The porch is 17 ft by 17 ft

Step-by-step explanation:

The perimeter of a square is

P = 4s where s is the side length

P = 4( 3x+2)

P = 12x+8

We know P = 14x-2

14x-2 = 12x+8

Subtract 12x from each side

14x-2 -12x = 12x+8-12x

2x -2 = 8

Add 2 to each side

2x-2 +2 = 8+2

2x= 10

Divide by 2

2x/2 = 10/2

x = 5

The side  is 3x+2

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                  15+2

                   17

The porch is 17 ft by 17 ft

5 0
3 years ago
HELP! TIMED QUESTION!
diamong [38]

Answer:

1

Step-by-step explanation:

3 0
3 years ago
Find the perimeter....
8090 [49]

The perimeter is adding all the outside edges together:

4 + 1 +4 +1 + 3 + 1 = 14 cm.

4 0
3 years ago
A box of crackers weighs 11 1/4 ounces. The estimated serving is 3/4 ounce. How many servings are in the box?
eimsori [14]
15 servings because 11.25/0.75=15

3/4=.75
11 1/4=11.25
7 0
3 years ago
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