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Advocard [28]
3 years ago
15

Erin and her friends are taking a road trip. She has agreed to drive between hours 3 and 6 of the trip. If h represents the hour

s of the trip Erin will be driving, then h ≥ 3 and h≤ 6 represents her portion of the driving. While she is driving, her distance and time are modeled by the inequality d < 70h. What are the possible hours and distances Erin could be driving?
Mathematics
2 answers:
almond37 [142]3 years ago
8 0

Solution:

As given

h =Hours of  the trip Erin will be driving.

Also ,   3 ≤ h ≤ 6

d = Distance traveled

The relation between hours of drive and distance traveled is given by inequality

→d < 70 h

→ h > \frac{d}{70}

→ As 3 ≤ h ≤ 6

→3 ≤  \frac{d}{70}   ≤ 6

→3 × 70 ≤ d ≤ 70 × 6

→ 210 ≤ d ≤ 420

So, h ∈ [3,6] then d ∈ (210,420)

Artist 52 [7]3 years ago
3 0
1: to the right 
2:to the left
3:below
4:4.5,200
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The mean and the deviation for  the normal standard distribution are:

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Part 3

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Part 4

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We are looking for a value a, that satisfy this:

P(X>a)=0.25   (a)

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3 years ago
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4 0
3 years ago
PLEASE HELP ASAP 50 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
Nonamiya [84]

Answer:

C

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Answer:

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