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s344n2d4d5 [400]
3 years ago
10

Bobby can run 2/8 mile in 2 1/4 minutes. If he maintains that pace, how long will it take him to run 1 mile?

Mathematics
2 answers:
4vir4ik [10]3 years ago
5 0
9 minutes because 2/8 is equal to 1/4 and he runs 4/4 so 2 1/4 times 4 equals 9
Finger [1]3 years ago
3 0

Answer:

Step-by-step explanation:

Using Inverse Variation

2/8 mile relates to 2 1/4 minutes

2/8 * 4 = 1mile=

2 1/4 /4=9/4*1/4=9/16 minutes

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Which is an equation of a circle with center (2, −10) and radius 3
stepladder [879]
(x - a)^2 + (y - b)^2 = r^2 is a circle with centre at (a, b) and radius of r
The correct answer is (x - 2)^2 + (y + 10)^2 = 9 ie the first one
6 0
3 years ago
AB with endpoints A(8,-12) and B(4, 10)
kondaur [170]

Answer:

(7,9) , (0,3)

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(-3, 9) , (0, 9)

Step-by-step explanation:

8 0
2 years ago
Convert 66 months to years.
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It will be 5 years and 5 months.
8 0
2 years ago
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Find the slope that passes through these two points.
barxatty [35]

Answer:

m =  \frac{ - 1 - 4}{2  + 3}  \\ m =  - 1

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5 0
3 years ago
Identify the sequence graphed below and the average rate of change from n = 1 to n = 3.
dsp73

Answer:

The required sequence is a_n=20(\frac{1}{2})^{n-1}. The average rate of change from n = 1 to n = 3 is -7.5.

Step-by-step explanation:

From the given graph it is clear that the sequence is a GP because the all terms are half of their previous terms.

Here, a_2=10,a_3=5,a_4=2.5,a_5=1.25

r=\frac{a_3}{a_2}=\frac{5}{10}=\frac{1}{2}

The common ratio of GP is 1/2.

r=\frac{a_2}{a_1}

\frac{1}{2}=\frac{10}{a_1}

a_1=20

The first term of the sequence is 20.

The formula for sequence is

a_n=a(r)^{n-1}

Where a is first term and r is common difference.

The required sequence is

a_n=20(\frac{1}{2})^{n-1}

The formula for rate of change is

m=\frac{f(x_2)-f(x_1)}{x_2-x_1}

The average rate of change from n = 1 to n = 3 is

m=\frac{f(3)-f(1)}{3-1}

m=\frac{5-20}{3-1}

m=\frac{-15}{2}=-7.5

Therefore the required sequence is a_n=20(\frac{1}{2})^{n-1}. The average rate of change from n = 1 to n = 3 is -7.5.

8 0
3 years ago
Read 2 more answers
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