Write the system of equations as a matrix equation AX=B, with A as the coefficient matrix of the system. Please help!

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:

Is an altitude in triangle abc. which statements are true? check all that apply. δabc δbxc δaxc ~ δcxb δbcx δacx δacb ~ δaxc δcxa δcba