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Questions in Grade Middle-school

[Answered] I don't know how to round to the nearest percent.

[Answered] Explain the role of energy in changes of state.

[Answered] State two numbers such that the grader number is 75% more than the lesser number

[Answered] Write a terminating decimal for 27 hits in 120 at-bats.

[Answered] How would I explain how to write 423,090,709,000?

[Answered] Help me solve this please

[Answered] When Cai traveled from New Orleans, Louisiana to the Ozark Mountains in Arkansas, the elevation changed from 7 ft below sea level to 2,314 ft above sea level. How much did the elevation increase?

[Answered] The radius of a circle is 6.5 centimeters. A square has the same area as this circle. What is the length of each side of the square, in centimeters?

[Answered] helpp meeeeeeee plzz

[Answered] The ratio of adults to students is 1:10. Last year, there were 477 more students than adults at prom. If the school is expecting the same attendance this year, how many adults have to attend?