What’s the missing angle

it's answer is 22°

Step-by-step explanation:

Here we can see it is a triangle so sum of all sides of triangle is 180°

Let the missing angle be x

x + 120° + 38° = 180°

x + 158° = 180°

x = 180° - 158°

x = 22°

180 - 120 - 30

22

Step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c