3 years ago

In an arithmetic sequence, u1 = 1.3 , u2 = 1.4 and uk = 31.2. 7a. Find the exact value of Sk

Mathematics

1 answer:

DIA [1.3K]3 years ago

6 0

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You provide a dog-walking service, and you report to the owners on the amount of exercise their dogs get on the walks. You walke

Neporo4naja [7]

Answer:

D. $2\frac{4}{7}\text{ mph}$

Step by step explanation:

First of all we will convert our given time from minutes to hour by dividing 35 by 60.

$35 \text{ minutes}=\frac{35}{60} \text{ hours}$

Let us find speed of dog during walk.

$\text{Speed of dog}=1.5 \div \frac{35}{60}$

Dividing a number by a fraction is same as multiplying the number by the reciprocal of the fraction.

$\text{Speed of dog}=1.5\times \frac{60}{35}$

$\text{Speed of dog}=\frac{1.5\times 60}{35}$

$\text{Speed of dog}=\frac{90}{35}$

$\text{Speed of dog}=\frac{18}{7}$

$\text{Speed of dog}=2\frac{4}{7}$

Therefore, speed of dog is $2\frac{4}{7}\text{ mph}$ and option D is the correct choice.

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4 years ago

6. Three consecutive integers add up to 51. What are these integers?

vladimir2022 [97]

Answer: 16,17,18

Step-by-step explanation:

(x)+(x+1)+(x+2) = 51

x+x+x+1+2=51

3x+3=51

3x=51-3

3x=48

x=16

x+1 = 17

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3 years ago

In Texas, the population of a species of bats is decreasing at a rate of -0.021 per year. The population was 22,000 in 2010. Acc

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A=22,000×e^(−0.021×5)
A=19,807.14

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4 years ago

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A glass dome for a lighting fixture is in the shape of a hemisphere. The circumference of the great circle of the hemisphere is

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A and B

Step-by-step explanation:

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4 years ago

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Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

$3^{5} = 243\\3^{2} = 9\\243/9 = 27\\27 = 3^{3}$

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3 years ago

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