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3 years ago

11

Jerry was trying out for the cross country team. He has to be able to run an 8.5 min mile. If he ran 5 mi in 45 mins last weeken

d, will this rate be good enough to make the team.

2 answers:

lesantik [10]3 years ago

7 0

Answer:no he misses the rate he needs to run by 30m seconds

Step-by-step explanation:

45/5=9

ivolga24 [154]3 years ago

5 0

Answer: No because in 5 miles he needs to run for 42.5 minutes or less

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After 4 interval of six months, Joe to earn same hourly rate as Blaine

<em><u>Solution:</u></em>

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Amount earned by Joe = $ 14 per hour

Amount earned by Blaine = $ 18 per hour

Lets assume the number of six month intervals be "x"

<em><u>Joe receives a raise of $1.75 every six months</u></em>

Therefore,

Joe earning: 14 + 1.75(number of six month intervals)

Equation for Joe earning: 14 + 1.75x ------- eqn 1

<em><u>Blaine receives a raise of $0.75 every six months</u></em>

Therefore,

Blaine earning: 18 + 0.75(number of six month intervals)

Equation for Blaine earning: 18 + 0.75x ------------ eqn 2

The number of six-month intervals it will take Joe to earn the same hourly rate as Blaine,

Eqn 1 must be equal to eqn 2

$14+1.75x = 18+0.75x\\\\1.75x-0.75x = 18-14\\\\1x = 4\\\\x = 4$

Thus after 4 interval of six months, Joe to earn same hourly rate as Blaine.

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