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GuDViN [60]
2 years ago
14

The mean temperature for the first 7 days in January was 6 °C.

Mathematics
1 answer:
IRISSAK [1]2 years ago
7 0

Answer:

\frac{x + x + x + x + x + x + x}{7} = 6 \\  \frac{7x}{7}   = 6 \\ x = 6 \\  \frac{6 + 10}{8}  =  \frac{16}{2}

Step-by-step explanation:

answer =2

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Use the model below to estimate the average annual growth rate of a certain country's population for 1950, 1988, and 2010, where
Morgarella [4.7K]

Answer:

The average annual growth rate of a certain country's population for 1950, 1988, and 2010 are 2.398, 0.9985 and 0.2236 respectively.

Step-by-step explanation:

The given equation is

Y=-0.0000084x^3+0.00211x^2-0.205x+8.423

Where Y is the annual growth rate of  a certain country's population and x is the number of years after 1900.

Difference between 1950 and 1900 is 50.

Put x=50 in the given equation.

Y=-0.0000084(50)^3+0.00211(50)^2-0.205(50)+8.423

Y=2.398

Therefore the estimated average annual growth rate of the country's population for 1950 is 2.398.

Difference between 1988 and 1900 is 88.

Put x=88 in the given equation.

Y=-0.0000084(88)^3+0.00211(88)^2-0.205(88)+8.423

Y=0.9984752\approx 0.9985

Therefore the estimated average annual growth rate of the country's population for 1988 is 0.9985.

Difference between 2010 and 1900 is 110.

Put x=110 in the given equation.

Y=-0.0000084(110)^3+0.00211(110)^2-0.205(110)+8.423

Y=0.2236

Therefore the estimated average annual growth rate of the country's population for 2010 is 0.2236.

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3 years ago
Hillel is juggling flaming torches to raise money for charity. His initial appearance raises $500, and he raises $15, for each m
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The sample must be randomly selected.

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