Answer:
-definition of cosine
-definition of sine
-Pythagorean Theorem
-Substitution
-laws of exponents
Step-by-step explanation:
C
This is saying sum 5 and a number and multiply the result by 4
let n be the number then 5 + n is the sum, and
4(5 + n) is 4 times the resultant sum
Tom needs 8 bags of topsoil
12.57
First: 4/10 aka 2/5
Second: 3/9 aka 1/3
