All you need to do is plug in each value for x & then solve the equation to see if it equals 7. When a number, like 2, is next to an x you multiply the two of them. So when you substitute a number for x, you multiply it by the 2.

2(3)-1= 5

2(4)-1= 7

2(5)-1=9

6 0

2 years ago

A ladder leans against a building forming an angle of 50° with the ground. The base of the ladder is 8 feet from the building. W

Aleksandr-060686 [28]

Answer:

The correct answer is 12.446 feet.

Step-by-step explanation:

A ladder leans against a building forming an angle of 50° with the ground.

The base of the given ladder is 8 feet away from the building.

Let the length of the ladder that is to be found be x feet.

Thus we find the cosine of the angle of inclination.

∴ cos 50° = $\frac{8}{x}$

⇒ x = 12.446 feet

Therefore the length of the ladder is 12.446 feet.

6 0

3 years ago

Sam saved $50 from his summer job to buy video games. He bought 3 video

Kitty [74]

Answer:

$12.40

subtract 12.80 from 50 to get 37.20 then divide by 3

3 0

3 years ago