Ð1 and Ð2 are congruent. If mÐ1 = 10x – 5 and mÐ2 = 6x + 15, then what is the degree measure of Ð1?
Select one:
a. 45°
b. 20°
c. 30°
d. 25°

Question

Ð1 and Ð2 are congruent. If mÐ1 = 10x – 5 and mÐ2 = 6x + 15, then what is the degree measure of Ð1?
Select one:
a. 45°
b. 20°
c. 30°
d. 25°

johnweldon1993 · Answer

If they are congruent they will equal each other, so we can just set these equal to each other and solve for 'x'

$$\large D1 = D2$$
$$\large 10x - 5 = 6x + 15$$
$$\large 4x = 20$$
$$\large x = 5$$

Now if that is true...since

$$\large D1 = 10x - 5$$

Puggin n the 5 for 'x' we get that

$$\large D1 = 10(5) - 5 = 50 - 5 = 45$$

anonymous · Answer

so its a ?

johnweldon1993 · Answer

Correct :)

anonymous · Answer

thanks . i appreciate it (: do you think you could help me with a couple more ?