Acar travels in 65 miles per hour. going through construction, it travels at 3/5 this speed. write this fraction as a decimal and find the speed

a) 3/5 =0.6

b) 3/5 of given speed=39 miles per hour

Step-by-step explanation:

Given :- Speed of a car= 65 miles per hour

Going through construction,it travels at 3/5 this speed.

Now 3/5 of speed =

Therefore, 3/5 of given speed=39 miles per hour

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.

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.