$\therefore \: (2x) \degree + 40 \degree = 90 \degree \\ \\ \therefore \: (2x) \degree = 90 \degree - 40 \degree \\ \\ \therefore \: (2x) \degree = 50 \degree \\ \\ \therefore \: 2x = 50 \\ \\ \therefore \: x = \frac{50}{2} \\ \\ \huge \red{ \boxed{ \therefore \: x = 25}}$

8 0

4 years ago

Help me please is urgent

poizon [28]

Answer: 5/4

Step-by-step explanation:

Slope = rise over run

Up 5 over to the right 4

3 0

4 years ago

A water rocket is projected vertically upward from the ground. Its a height(h) m above the ground after t seconds is given by h=

Morgarella [4.7K]

The rocket will reach the ground after 4 seconds

Step-by-step explanation:

Step 1: Find the time when the water rocket reaches the ground.

When the water rocket reaches the ground, the height, h will be zero.

⇒ h = 20 - 5(t - 2)²

⇒ 0 = 20 - 5(t - 2)²

⇒ 5 (t - 2)² = 20

⇒ (t - 2)² = 4

⇒ t - 2 = √4 = 2

∴ t = 2 + 2 = 4 seconds

5 0

3 years ago