Answer:
9
Step-by-step explanation:
one angle here is 60 degrees.
7x-3=60
7x=63
x=9
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13 x 1.75 = 22.75
take 22.75 and multiply by 2
you should get 45.50
Answer:
2x+15=33
Step-by-step explanation:
Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.
Since he started doing 15 sit-ups on the first day, the total number of sit-ups
after x days would be 2n+15.
Since he did a total of 33 sit ups today, then 2n+15=33
The answer is 3/10
Explaintion