Questions in Grade High-school

Questions in Grade High-school

[Open]At 8:00 am, a building casts a shadow 75 feet long. The angle where the ray from the sun meets the ground is 50°. How tall is the building?

[Open]Factorize: \(-x^2y^2 + x^4 - 2y^4\)

[Open]True or False: Thomas Edison created the light bulb?

[Open]A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?

[Open]If [tex]x^2 - y^2 = 55[/tex], and [tex]x - y = 11[/tex], then [tex]y =[/tex]

[Open]What is your rate in miles per hour if you run at a speed of 2.2 miles in 20 minutes?

[Open]What does \( x \) equal if \( 2.3 - 5x = 3x - 5.7 \)? Please explain how to solve this equation.

[Open]What cells. Join to cause conception? Can you help me with all of them?

[Open]Michael made a baby quilt that was 3 feet wide. Its perimeter was 16 feet. What was its area? Show the steps.

[Open] A telephone pole breaks and falls as shown. To the nearest foot, what was the original height of the pole?