Answer:
16
Step-by-step explanation:
Divide 64 by 8 to get 8. this is 1/8 of the books.
3/8 were non fiction, or 24
1/4 (2/8) were picture books, or 16
5/8 were non fiction or picture books, so ’the rest‘ of the chapter books is 3/8.
3/8 were chapter books, or 24.
add the amount of picture books and chapter books since they are the fictional texts.
16+24=40
subtract the amount of non fictional books from the amount of fictional books to get the sum.
40-24=16
Answer:
right angles and obtuse angles
Step-by-step explanation:
We assume that anything that <em>looks like</em> a right angle <em>is</em> a right angle.
The angles at the left end of each horizontal line are right angles.
The angles at the right end of each horizontal line are obtuse angles.
The angle where the diagonal lines meet is a right angle.
The shape contains right angles and obtuse angles.
Answer:

Step-by-step explanation:
Given
--- The variation

Required
Determine the constant of proportionality (k)

Express as an equation

Multiply both sides by 

Make k the subject

Given that: 
We have:



This can be represented as:
Answer:
7 . 8.9
8 . 19.5
9 . 9.9
10 .12.6
Step-by-step explanation:
7.x=11tan39
8.x=28cos46
9.x=8tan51
10.x=31sin24
side opposite of mentioned angle is opposite
longest side in triangle is hypotenuse
the side subtended by the angle is the adjacent