Sand is added to the timer below so that the height of the sand is 30 millimeters. You must answer a trivia question before the sand in the timer falls to the bottom. The sand falls at a rate of 50 cubic millimeters per second. How much time do you have to answer the question? Round your answer to the nearest whole number. A drawing of an hourglass is shown with sand at the upper conical bulb. The diameter of the base of the upper bulb is marked as 30 millimeters. The radius of the bases of the sand is marked as 10 millimeters and the height of the sand is from the vertex is marked 24 millimeters.

You have about
seconds to answer the question.

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step-by-step explanation:

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answer:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21  

-7 + ? = 21

-7 + 28 = 21

hope it

(−$11) ⋅ 12

deductions are subtracted and there are 12 months in a year

during a tunnel construction project, engineers used explosives to excavate partway into a mountain. but due to constraints and environmental concerns, they later introduced a tunnel boring machine (tbm) to excavate the rest of the tunnel. the length and of the completed tunnel (in feet) is based on the number of days since the tbm started working. the length can be calculated using the equation y = 25x + 225. what does the y-intercept represent in this scenario?