Answer:
2.8a²+0.9a - 1.2
Step-by-step explanation:
Given the expression 0.3(3a-4)-0.05(8a)(-7a)
Expand using the distributive law
0.3(3a-4)-0.05(8a)(-7a)
0.3(3a)-0.3(4)-0.05(8a)(-7a)
0.9a-1.2 - 0.05(8a)(-7a)
0.9a - 1.2 + 2.8a²
Rearrange
2.8a²+0.9a - 1.2
Hence the required expression is 2.8a²+0.9a - 1.2
25% = 1/4
So to get the unknown number, multiply 9 by 4:
9 × 4 = 36
ST = 1/2 (RV) = VQ = 6
answer
ST = 6
hope it helps
Answer:
10-10
Step-by-step explanation:
56.3 I believe is the answer
