Answer:
question 3.3 Answer: Angle 3
question 3.4 Answer: ABD and DBC are complementary angles
question 3.5 Answer: x is 7 degrees (first answer option)
Step-by-step explanation:
First question:
Recall that suplementary angles are those whose addition gives 180 degrees. Therefore the supplementary angle to angle 8 is angle 3.
Second question:
Recall that complementary angles are those angles which added give 90 degrees. Therefore, the only correct answer for this question is the third one: ABD and DBC are complementary angles.
Third question:
Notice that the two angles added should render 90 degrees, therefore, their expression should as well add to 90 degrees. Such can be written in equation form as:
( 6 x - 20 ) + (4 x + 40 ) = 90
combining like terms and later solving for x we get:
6 x + 4 x - 20 + 40 = 90
10 x + 20 = 90
10 x = 90 - 20
10 x = 70
x = 7
Therefore x is 7 degrees
The height is 5.
Since V=Base*height, I just divided the volume by the base.
175/35
=5
So the height would be 5. You can check to see if it's true by multiplying 35*5, which gives you 175.
It
can be described useing two other undefined terms :- point & line
Answer:
1. x
2. ÷
3. -
4. -
5. ÷
Step-by-step explanation:
1. 24 x 3/4 = 18
2. 24 ÷ -3/4 = -32
3. 12 - 15 = -3
4. 12 - -15 = 27
5. -18 ÷ -3/4 = 24