Answer:
2 1/15
Step-by-step explanation:
<em>Hey there!</em>
<em />
Well to multiply,
5 1/6 • -2/5,
we need to make 5 1/6 improper
31 * 2 = 62
6 * 5 = 30
Simplified,
2 1/15
<em>Hope this helps :)</em>
Answer:
<h2>138°</h2><h2 />
Step-by-step explanation:
∡5 = 42°
find: ∡ 14
solution:
since ∡5 = ∡13 = 42°
∡14 = 180 - ∡13
= 180 - 42
= 138°
By Pythagoreans' theorem,
7.5² = l² × b²
56.25 = l² × b²
Since l = b
56.25 ÷ 2
= l²/b²
= 28.125 mm
∴ l = √28.125
= 5.3033 mm
Area of square
= √28.125 × √28.125
= 28.125 mm²
≈ 28.1 mm² (3s.f.)
Question 9 is A, and question 10 is 10^5.