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Mathematics

2 answers:

yaroslaw [1]3 years ago

5 0

8x + 1 = 1; Step 2: 8x = 0

8x − 9 = 1; Step 2: 8x = 10

15x − 20 = 1; Step 2: 15x = 21

15x − 4 = 1; Step 2: 15x = 5

C, Sorry i'm kinda late...

ozzi3 years ago

3 0

9514 1404 393

Answer:

Step-by-step explanation:

The first step is to eliminate the parentheses, using the distributive property.

5(3x − 4) = 1

15x -20 = 1

The second step is to add 20 to both sides of the equation.

15x = 21

This pair of steps is shown in the 3rd choice.

_____

<em>Comment on the answers</em>

The distributive property seems to be applied incorrectly a lot of the time. Here, you can choose the correct answer by looking at the result of properly applying the distributive property: 5(3x-4) = 15x-20. Only the correct choice has this as the first step.

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Express in the form 1:n give n as a decimal 8:6

photoshop1234 [79]

Answer: 8.6:8.6

Explanation:

1:n is the form you want.

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8.6 times 1 is 8.6

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your welcome, i hope this helps

3 0

3 years ago

Sharon and Jacob started at the same place. Jacob walked 3 m north and then 4 m west. Sharon walked 5 m south and 12 m east. How

Ilya [14]

Consider the coordinate plane:

1. The origin is the point where Sharon and Jacob started - (0,0).

2. North - positive y-direction, south - negetive y-direction.

3. East - positive x-direction, west - negative x-direction.

Then,

if Jacob walked 3 m north and then 4 m west, the point where he is now has coordinates (-4,3);
if Sharon walked 5 m south and 12 m east, the point where she is now has coordinates (12,-5).

The distance between two points with coordinates $(x_1,y_1)$ and $(x_2,y_2)$ can be calculated using formula