Solve each equation for the unknown variable
a. 2x + 3 = 23
b. -3[x+9] =30
c. 0.75x - 12.75 = 27
d. 1/2x + 6 = -8

A. x=10

B. x=-19

C. x=53

D. x=-1/28

Step-by-step explanation:

A.

2x+3=23

2x=20

x=10

B.

-3(x+9)=30

x+9=-10

x=-19

C.

0.75x-12.75=27

0.75x=39.75

x=53

D.

1/2x+6=-8

1/2x= -14

1=-28x

x=-1/28

the measurements of the two sides are 12 and 35 respectively. using the pythagorean theorem, the formula in computing the hypotenuse is:

c = √a^2 + b^2

c = √12^2 + 35^2

c = √144 + 1,225

c = √1,369

c = 37

therefore, the hypotenuse is 37 units.