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Questions in Grade Middle-school

[Homework Help] 180 is the least common multiple (LCM) of 12 and a number \( n \). What are the possible values of \( n \)?

[Homework Help] What is \(\frac{27}{4}\) as a mixed number?

[Homework Help] What is the value of a?

[Homework Help] What is 990 rounded to the nearest hundred?

[Homework Help] Solve for \( y \) when \( x = -3, 0, 3 \) in the equation: \[ 3x - 7y = 17 \]

[Homework Help] What is the value of the variable that makes the statement true? a + (–7) + 3 = 0 A. –4 B. –3 C. 4 D. 7

[Homework Help] A man 2 meters high observes the angle of elevation to the top of a building to be 61 degrees and the angle of depression to the bottom of the building to be 18 degrees. How tall is the building?

[Homework Help] Find the simple interest on £3500 invested for 3 years at 4% per year.

[Homework Help] What are the lines called that run around the Earth in an east-west direction?

[Homework Help] What is the lowest number 588 can be multiplied by so that the result is a squared number?