When you multiply the denominator by some value, you must also multiply 2 points
the numerator by the same value. Why? *
5
(2)
12
о
Any value divided by itself is one, and multiplying by 1 doesn't change the value of the
fraction
Because this is the same thing as multiplying the whole fraction by zero
It creates a common denominator
The top and bottom number cancel each other out
a

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.

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it

the answer is a.

135 and 80

step-by-step explanation: