Asked by serious help needed
Write then solve the inequality.
1. nine more than half the number n is no more than -8. Find n.
2. Judith drove h hours at a rate of 55 mi/hr. She did not reach her goal of driving 385 miles for a day. How long did she drive?
1. nine more than half the number n is no more than -8. Find n.
2. Judith drove h hours at a rate of 55 mi/hr. She did not reach her goal of driving 385 miles for a day. How long did she drive?
Answers
Answered by
helper
1.) 9 more than 1/2 the number no more than -8.
n = number
n + 9 = nine more
1/2 n = half the number
no more than -8 (means) <= -8
1/2 n + 9 <= -8
1/2 n <= -17
Multiply both sides by 2
n <= -34
number is 34 (less than or equal -34)
2.) h hours at rate of 55 mi/hr
D = RT (Distance = Rate x Time)
h = hours
55h = h hours at 55 mph
Did not reach goal of 385 (means) < 385
55h < 385
h < 7
Drove 7 hours (less than 7 hours)
n = number
n + 9 = nine more
1/2 n = half the number
no more than -8 (means) <= -8
1/2 n + 9 <= -8
1/2 n <= -17
Multiply both sides by 2
n <= -34
number is 34 (less than or equal -34)
2.) h hours at rate of 55 mi/hr
D = RT (Distance = Rate x Time)
h = hours
55h = h hours at 55 mph
Did not reach goal of 385 (means) < 385
55h < 385
h < 7
Drove 7 hours (less than 7 hours)
Answered by
simadra
jenny drove for 5 hours at 55 mph. how far did she drive?
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