First we combine the parenthesis to get 9/(-2-i) then we multiply both the numerator and the denomenator by the conjugate of -2-i (whic is -2+i) to get (-18+9i)/5

3 0

3 years ago

A flashlight is projecting a triangle onto a wall, as shown below.

zavuch27 [327]

Answer:

Hence the correct option is 3rd option. 40

Step-by-step explanation:

If two figures are similar, then the ratio of the corresponding sides is proportional.

$\frac{15}{30} =\frac{20}{n} \\\\n=\frac{30 \times 20}{15} \\\\n= 40.$

6 0

2 years ago

The interior angles of a triangle have measures k°, 27°, and 10°. What is the value of k?ANSWER MY FREAKING QUESTION

lapo4ka [179]

143o

interior angles of a triangle always add up to 180o

6 0

3 years ago