Round 645 to the nearest ten

Mariah has the spool of ribbon and 1 half yard of fabric for a craft project. She wants to cut it into 6 equal pieces how long is each piece of ribbon

Angle Q measures 30 degrees. If angle Q is rotates 15 degrees, what is the measurement of angle Q?

A car drives at a speed of 90km/h for 2 hours and 20 minutes. How far does the car drives?

Value of sin-1 (0.549)

Perbandingan kelereng Faiz dan Bayu 4 : 11. Jumlah kelereng mereka 60 buah. Selisih kelereng keduanya adalah

1. Given a sequence is defined by the explicit definition tn=n^2+n, find the 4th term of the sequence. (ie t4) A) 4 B) 8 C) 20 D) 1806 2. Given the sequence is defined by the explicit definition tn=2^n-n, find the 5th term of the sequence.

How do you solve 1/2x<13?

Every digits in 798 is greater than any digit in 4325 explain why 4325 is greater than 798

There are 28 students in Mrs. Chung's sixth grade class. This is 10% of all sixth graders in the school. What is the total number of sixth graders in the school?

Explain why the product (3x^-3) (3x^3) is a constant.