Answer:
29
Step-by-step explanation:
2x+5x+5=180 so x has to be 25
Answer:
8.40049 × 10^7
Step-by-step explanation:
Answer:
The answer is 4.50+2.17=6.67, which is the amount she owes her mother. Hope this helps!
Answer:
Final answer is c. 15
Step-by-step explanation:
We need to find about what is the first term in the sequence for which d = -2 and a7 = 3
We will use nth term formula of arithmetic sequence.

we have been given a7 that means 7th term is 3
so plug n=7, d=-2 and a_n=3 into above formula




Hence final answer is c. 15