What is 1.3 x 104 in standard notation? O A. 0.00013
B. 13,000
C. 1300
O D. 1.34
SUB

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

20 points plus brainliest andwer plus my hover hoard im v desperate ! evaluate the polynomial for x=-2 in the equation -3x^3+7x^2-7x-1 (simplify your answer)