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il63 [147K]
3 years ago
11

EASY MATH!!! GIVING BRAINLIEST!!!

Mathematics
1 answer:
Harman [31]3 years ago
8 0
120 grams half life at 45 days would be 60 then half life of 60 in another 45 days (90 total) should be 30 grams
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Rent-Me Rent-A-Car charges $25.00 per day plus $0.14 per mile to rent an economy car. Better Deal Rental Car charges $23.00 per
zalisa [80]

Answer:

The number of miles at which a car rented from either company cost the same amount is <u>50 miles</u>.

Step-by-step explanation:

Let x represents the number of miles at which a car rented from either company cost the same amount. Therefore, we can have the following equation:

RC = 25 + 0.14x ....................... (1)

BC = 23 + 0.18x ...................... (2)

Where;

RC = Total cost of Rent-Me Rent-A-Car

BC = Total cost of Better Deal Rental Car

The the cost of the two companies equal where RC = BC. Therefore, we equate equations (1) and (2) and solve for x as follows:

25 + 0.14x = 23 + 0.18x

25 - 23 = 0.18x - 0.14x

2 = 0.04x

x = 2 / 0.04

x = 50

Therefore, the number of miles at which a car rented from either company cost the same amount is <u>50 miles</u>.

<u>Note:</u>

This can be confirmed for equations (1) and (2) individually by substituting for x = 50 as follows:

For equation (1):

RC = 25 + 0.14(50)

RC = 25 + 7

RC = 32

For equation (2):

BC = 23 + 0.18(50)

BC = 23 + 9

BC = 32

Therefore, RC = BC = 32 confirms the answer.

3 0
3 years ago
Which table shows a linear relationship
drek231 [11]

Answer:

B

Step-by-step explanation:

4 0
3 years ago
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Gary is 8 years older than his brother. Six years ago Gary was three times as old as his brother. How old are they now?
Yuliya22 [10]

Answer:Gary-18 years brother-10 years

Step-by-step explanation:1st case: brother=1 yrs,gary=3 yrs=>after 6 after: brother =7 yrs gary=9 years

2nd case:......

3rd case:.....

4th case:brother:4 years gary:12 yrs=>after 6 yrs:brother=10 yrs gary=18 yrs=>18-10=8

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What is the scale factor for 10 cm to 5 m
IgorLugansk [536]

Answer:

2cm

Step-by-step explanation:

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Which one? I can’t figure it put
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Answer:corresponding angles

I am very sure

Step-by-step explanation:

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3 years ago
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