Calculati media aritmetica ponderata a numerelor m1,m2,m3 cu ponderile p1,p2,respectiv p3, indicate in fiecare caz:
a) m1=2; m2=-3; m3=1,5; p1=4; p2=5; p3=-7.

the answer is 8

step-by-step explanation:

3.14 x 8x8

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

42.4

step-by-step explanation:

convert to decimal

answer: 819.89 miles across america

step-by-step explanation: