So average=(total of scores)/(number of tests)
needs at least average of 70
at least is represented as greater than or equal to or the sign (<u>></u>)
70<u>></u>(total)/(number oftests)
since we have 3 tests, we have to have 3 scores so
70<u>></u>(x+y+z)/3
he scored 85 and 60
70<u>></u>(x+85+60)/3 (doesn't matter which to subsitute)
70<u>></u>(x+145)/3
multiply obht sides by 3
210<u>></u>x+145
subtract 145 from both sides
65<u>></u>x
he needs to get at leas 65 on his third test
The answer i got was 31.4.... if that’s wrong i’m so sorry.
10 the answer is c. i don’t know if that’s correct
Z+22/z = 12
z+22=12z
22=11z
2=z
Hope this helps. Just say if you need more of an explanation.
Answer:
The first 3 terms are -3, -2, -1
Step-by-step explanation:
n-4
First term: 1 - 4 = -3
Second term: 2 - 4 = -2
Third term: 3 - 4 = -1
