All categories

3 years ago

How do you use a number line to add integers?

Mathematics

1 answer:

iogann1982 [59]3 years ago

8 0

1. Add a positive integer by moving to the right on the number line.

2. Add a negative integer by moving to the left on the number line.

3. Subtract an integer by adding its opposite.

You might be interested in

A couch and coffee table cost a total of $1167. The cost of the couch is two times the cost of the coffee table. Find the cost o

labwork [276]

Answer:

The couch is $778 and the table is $389

Step-by-step explanation:

7 0

2 years ago

Draw a picture of the standard normal curve and shade the area that corresponds to the requested probabilities. Then use the sta

elena-14-01-66 [18.8K]

Answer:

a)P [ z > 1,38 ] = 0,08379

b) P [ 1,233 < z < 2,43 ] = 0,1012

c) P [ z > -2,43 ] = 0,99245

Step-by-step explanation:

a) P [ z > 1,38 ] = 1 - P [ z < 1,38 ]

From z-table P [ z < 1,38 ] = 0,91621

P [ z > 1,38 ] = 1 - 0,91621

P [ z > 1,38 ] = 0,08379

b) P [ 1,233 - 2,43 ] must be P [ 1,233 < z < 2,43 ]

P [ 1,233 < z < 2,43 ] = P [ z < 2,43 ] - P [ z > 1,233 ]

P [ z < 2,43 ] = 0,99245

P [ z > 1,233 ] = 0,89125 ( approximated value without interpolation)

Then

P [ 1,233 < z < 2,43 ] = 0,99245 - 0,89125

P [ 1,233 < z < 2,43 ] = 0,1012

c) P [ z > -2,43 ]

Fom z-table

P [ z > -2,43 ] = 1 - P [ z < -2,43 ]

P [ z > -2,43 ] = 1 - 0,00755

P [ z > -2,43 ] = 0,99245

8 0

2 years ago

Tom solved the problem a different way. First he found the total area of the floor, and then he multiplied by the height. Does T

Anastasy [175]

No.

Tom forgot about the area of the top/roof, the floor and roof are different dimensions/areas, making his method incomplete.

He needs to find area of Roof, Floor then times height.

5 0

3 years ago

Read 2 more answers

There are 15 pieces of fruit in a bowl and 6 of them are apples. What

jekas [21]

Answer:

40%.

Step-by-step explanation:

There are 6 / 15 apples out of the bowl.

6/15 = 2/5 = 0.4

So, 40% of the fruit in the bowl are apples.

Hope this helps!

3 0

2 years ago

Determine if the coordinate (6, 8) lies on the circle x^2 + y^2 = 100. <br>

SVEN [57.7K]

Answer:

x² + y² = 100

6² + 8² = 100

36 + 64 = 100

100 = 100

Because this is a true statement, the answer is yes, it does lie on the circle.

3 0

2 years ago