Answer:
i need points so i am answering
Step-by-step explanation:
Answer:
13.
Step-by-step explanation:
x+x+5=21
2x+5=21
2x=16
x=8
To find the mean, add up all the test scores and divide by the number of tests:
524/10 = 52.4.
Answer:
A number times five is greater than fifteen. A number less negative seven is less than or equal to five. The difference between a number and seven is less than zero. The sum of a number and seven is greater than or equal to fifteen.
