A square has sides of 10x. Write and simplify an expression for the perimeter of that square.

Mathematics

1 answer:

lesya692 [45]3 years ago

7 0

Answer:

The perimeter of the square would be 40x

Step-by-step explanation:

In order to find that, we can use the equation for the length of a perimeter in a square.

P = 4s

Now we can input the value of the sides for s

P = 4(10x)

P = 40x

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3 years ago

A ball is thrown with a slingshot at a velocity of 110 ft./sec. at an angle 20 degrees above the ground from a height of 4.5 ft.

Leviafan [203]

Answer:

T= 2.35 seconds

Step-by-step explanation:

⇒The question is on the time of flight.

⇒Time of flight is the time taken for a projected object to reach the ground.It depends on the projectile angle and the initial velocity of the projectile

Given;

Initial velocity of ball= 110ft./sec.

The projectile angle= 20°

Acceleration due to gravity, g=32 ft./s²

⇒Formulae for time of fright T= (2×u×sin Ф)/g

Where T=time of fright, u=initial velocity of projectile, Ф=projectile angle and g=acceleration due o gravity.

Substituting values

T= (2×u×sin Ф)/g

T=( 2×110×sin 20°) / 32

T= 2.35 seconds

3 0

3 years ago