In triangle abc, angle c=(5x), angle b = x, and angle c =(3x). what is angle c

60 degrees

Step-by-step explanation:

a+b+c= 180 degrees therefore 5x + x + 3x = 9x

9x=180 (divide) --> x=20

since c = 3x substitute in 20 for x --> 3(20) = 60 degrees for angle c

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²