There's no such thing as the "length"of an angle.
But we know what you're getting at.

You have said that the angles are complementary. If two angles are
complementary, then their sum is 90 degrees, so we can take your
two angles and write:

 x (one angle) plus (2x + 12) (the other one) = 90 degrees

 x + 2x + 12 = 90

Subtract 12 from each side: x + 2x = 78

Add the x's on the left side: 3x = 78

Divide each side by 3 : x = 26 degrees

One angle is 'x' = 26 degrees

The other one is (2x + 12) = 52+12 = 64 degrees

4 0

4 years ago

Alan has forgotten his 4-digit PIN code.

MA_775_DIABLO [31]

200

If the number is divisible by 5, then the last digit should be either 5 or 0.

First digit is fixed.

Second digit can be 10 ways.

Third digit can be 10 ways.

Fourth digit can be 2 ways.

So total number of digits 1 x 10 x 10 x 2 = 200

5 0

3 years ago

Read 2 more answers

A farmer has 450 eggs . egg cartons hold 12 eggs who many cartons does farmer need ?

Brilliant_brown [7]

Answer:

Step-by-step explanation:

38. 450 divided by 12 is 37.5 and you can’t have half of a carton so one carton would be half full

7 0

3 years ago

Read 2 more answers

Given that (–2, y) and (4, 6) are points on a line whose slope is-4/3 , find y.