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iren2701 [21]
3 years ago
11

pls help‎‎ ‎ ‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎

‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎​

Mathematics
1 answer:
givi [52]3 years ago
8 0

Answer:

c) 1

Step-by-step explanation:

\frac{1}{2}(12·g)-h

g= \frac{1}{4} and h=\frac{1}{2}; substitute back in the equation

\frac{1}{2}(12·\frac{1}{4}) - \frac{1}{2}; multiply inside the parenthesis

\frac{1}{2}(3)- \frac{1}{2}; multiply and notice the same denominator

\frac{3}{2}-\frac{1}{2} = \frac{2}{2} = 1; subtract the fractions

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9966 [12]

1.  5pq =5(4)(-3) = 20(-3) = -60

2.  pr+q = (4)(-2) = (-3) = -8 + (-3) = -11

7 0
4 years ago
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A biologist is researching a newly-discovered species of bacteria. He puts 200 bacteria into what he has determined to be a favo
Olenka [21]

Answer:

354.

Step-by-step explanation:

Exponential growth:

380 = 200e^(k*9)     where k is a constant to be found.

e^9k = 380/200 = 19/10

ln e^9k = ln 1.9

9k = ln 1.9

k = ln 1.9 / 9

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After 8 hours:

Number of bacteria =

200*e^(8*0.071)

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8 0
3 years ago
A driver is 15 feet below the surface of the water 10 seconds after he entered the water and 90 feet below the surface after 40
spin [16.1K]

Answer:

\frac{-75ft}{30sec} or simplified would be \frac{-2.5ft}{sec}

Step-by-step explanation:

In order to calculate the rate of change, we must subtract his end position and end time by the starting position and starting time. We are using the -15 feet since it is below the surface area as the starting position and the 10 seconds as the starting time. We make each of these into a fraction and subtract like so...

\frac{-90ft - (-15ft)}{40sec - 10sec} = rate of change

\frac{-75ft}{30sec} = rate of change

\frac{-2.5ft}{sec} = rate of change

Therefore, we can see that the rate of change of the diver is \frac{-75ft}{30sec} or simplified would be \frac{-2.5ft}{sec}

6 0
3 years ago
A spinner is divided into four sections of equal size, numbered 1, 2, 3, and 4. You spin it three times, and get 1, 4, and 3. Wh
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Answer:

hello your question lacks the required statements here are the statements

A spinner is divided into four sections of equal size, numbered 1, 2, 3, and 4. You spin it three times, and get 1, 4, and 3. Which statement is FALSE?

A. The theoretical probability of a 1 is 25%.

B. The experimental probability of a 1 is 25%.

C. If you spin the same spinner again and get different results, the experimental probabilities are different, but the theoretical probabilities have not changed.

D. The experimental probability of a 2 is 0%.

Answer : The experimental probability of a 1 is 25%  ( B )

Step-by-step explanation:

The first statement is true because since the spinner is divided into 4 sections  the theoretical probabilty is equal for all sections i.e 25% each

The second statement is false because after spinning the spinner three times ( experimental ) the results obtained were 1,4,3 hence the experimental probability of 1 would be 33.3%

the theoretical probabilities remains unchanged but the experimental probabilty can change

the experimental probabilty of 2 is 0% because after the 3 experiments the number 2 did not show up

7 0
4 years ago
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Answer:

\pi/4

Step-by-step explanation:

The volume of a cone is \pi r^2h/3. We have that r=1 and h=3/4. Therefore, the volume is \pi/4.

5 0
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