Answer:
The unknown number is 1.
Step-by-step explanation:
You have to form an expression. So let's make the unknown number as x. Firstly, a number is multiplied by 5 :
Secondly, 5 is added to product and you will get 10 :
Lastly, you have to solve :
2
if you divide
10 by 5
you get two
70
complementary angles are 2 angles that add up to 90, the first angle is already 20 so just subtract 90-20 to find other angle
the angle 4pi/5 in quadrent 2
d is the answer' because it is :D
2 2/7
3 3/7 ÷ 3 = 1 1/7, 1 1/7 x 2 = 2 2/7