Awhole number is added to a number with two digits after the decimal point. to make sure the answer is reasonable, how many digits should the sum have after the decimal point?
a. none
b.1
c.2
d. infinitely many

c.2

Step-by-step explanation:

We are given that a whole number is added to a number with two digits after the decimal point.

We have to find the number of digits in sum  after the decimal point.

Suppose  a whole number 12 and a decimal number with two digits after decimal point is 4.56.

Sum=12+3.56

Sum=15.56

Hence, the sum have two digits after the decimal point.

c.2

9 x 8 divided by (5-3)=36

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.