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GarryVolchara [31]
2 years ago
15

Three friends ate lunch at a restaurant. Their friend Reggie arrived late

Mathematics
2 answers:
mezya [45]2 years ago
8 0
Each friend paid $13.16
podryga [215]2 years ago
7 0
Each of the 3 friends paid $12.50 each. First you subtract the $2 from the total which is $39.50 and that gives you $37.50. Then you divide the $37.50 by the 3 friends and that gives you the $12.50 that each friend paid.

~Good luck!
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A car needs fixing and Abe can fix it for $70 per hour with a $130 part, but Gabe can fix it for $80 an hour with a $40 part.How
patriot [66]

Answer:

9 hours

Step-by-step explanation:

Abe's charge  =   Gabe's charge

$130+($70/hr)h = $40+($80/hr)h

Then 130 + 70h = 40 + 80h, or

           90           =   10h, or h = 90/10 = 9

When 9 hours have passed, the amount charged by each person will be temporarily equal.

7 0
3 years ago
Bobby is testing the effectiveness of a new cough medication. There are 100 people with a cough in the study. Seventy patients r
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Answer:

0.665

Step-by-step explanation:

Given:  100 people are split into two groups 70 and 30.  I group is given cough syrup treatment but second group did not.

Prob for a person to be in the cough medication group = 0.70

Out of people who received medication, 34% did not have cough

Prob for a person to be in cough medication and did not have cough

=\frac{0.70(34)}{60}=0.397


Prob for a person to be not in cough medication and did not have cough

=\frac{0.3(20)}{30}=0.20

Probability for a person not to have cough

= P(M1C')+P(M2C')

where M1 = event of having medication and M2 = not having medication and C' not having cough

This is because M1 and M2 are mutually exclusive and exhaustive

SO P(C') = 0.397+0.2=0.597

Hence required prob =P(M1/C') = \frac{0.397}{0.597}=0.665

4 0
3 years ago
Read 2 more answers
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Vsevolod [243]

Answer:

true

Step-by-step explanation:

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Valentin [98]

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Because a square is a rectangle,it must have
yaroslaw [1]

Answer:

4 right angles & 2 sets of parallel lines

Step-by-step explanation:

i am big brain

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