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Temka [501]
3 years ago
14

2 times x minus 5 is 7. What is x?

Mathematics
1 answer:
myrzilka [38]3 years ago
4 0

Answer:

6

Step-by-step explanation:

take 7 add 5 and then u get 12 so u take half of that and u get 6

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While working at the drugstore, Robbie earns $12 per hour. How many hours will it take Rubbie to earn $48?
velikii [3]

Answer:

4 hours.

Step-by-step explanation:

If Robbie earns 12 dollars per hour, it will take him 4 hours to earn 48 dollars. This is because 48/12 = 4.

7 0
3 years ago
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which power can you write to represent the volume of a cube that is 1/3 inches. write the power as an expression with a base and
otez555 [7]
Base: 1/3
Exponent: 3
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8 0
4 years ago
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Please help I have 15 minutes!!!!!!!
DedPeter [7]

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NO WAIT NO IGNORE MY PREVIOUS ANSWER

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6 0
3 years ago
The count in a bacteria culture was 800 after 15 minutes and 1200 after 40 minutes. Assuming the count grows exponentially,
Maslowich

Answer:1) bacteria size = b(initial) * e^(r * t)  

initial size = 300  

final size = 1600.

 

Substituting the values into the main equation:

1600 = 300 * e^(r * 35 - 20)  

solving for 'r'.

1600 = 300 * e^(r * 15)  

1600/300 = e^(r * 15)  

taking natural log on both sides to eliminate the power

ln(16/3) = ln[e^(r * 15)]  

ln(16/3) = r * 15  

r  = ln(16/3) / 15

  = 0.11159843

  = 11.16%  

To find the initial bacteria size,  

Given: t = 20  

300 = b * e^(0.1116 * 20)  

Solving for b:

300 = b * e^2.232  

b = 300/e^2.232  

b = 32

Step-by-step explanation:

3 0
3 years ago
What is the slope of the line below? If necessary, enter your answer as a fraction in lowest terms, using the slash as the fract
Arlecino [84]

Answer:

4

Step-by-step explanation:

5 + 3/1 + 1 =

8/2 =

4/1 =

4

This is because of slope formula which is x-x/y-y

5 0
4 years ago
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