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jek_recluse [69]

3 years ago

8

Suppose that a fish swam 10.5 kilometers in 3 hours at a constant speed. At this rate, how long will it take the to swim 28 ki

lometers?

2 answers:

Sergio [31]3 years ago

6 0

Answer:

8hours

Step-by-step explanation:

10.5/3=3.5km/h

28/3.5=8h

irga5000 [103]3 years ago

5 0

Answer:

8 hours

Step-by-step explanation:

10.5km/3 = 3.5km/h

28km/3.5 = 8 hours

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Evaluate the function:<br><br> f(x)=4x−1, find f(9)

Eddi Din [679]

Answer:

f(9) = 35

Step-by-step explanation:

To solve this, you can take 9 and replace both x's with it and then complete the equation;

f(x) = 4x - 1

f(9) = 4(9) - 1

f(9) = 36 - 1

f(9) = 35

Hope this helps!

3 0

3 years ago

Tim is clearing brush from a large piece of land. Tim clears 1/4 of an acre in 2 days. How

kodGreya [7K]

Answer:

8 days

Step-by-step explanation:

$\frac{1}{4} \times 4 =1$

$2 \times 4 = 8$

It takes Time 8 days to clear 1 acre

4 0

3 years ago

Read 2 more answers

Ratling [72]

6/13=x/72
X=33
They are similar triangles so the ratios are equal

3 0

3 years ago

Im unsure about my answer

IgorLugansk [536]

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5 0

3 years ago

Develop an explicit formula in terms of n for the nth term of the following sequence:

Pavel [41]

Answer:

$a_{n}=(n-1)n^{2}$

for the seventh term: $a_{n}=(7-1)7^{2}= (6)(49)=294$

Step-by-step explanation:

First, we need to observe the sequence, it is crescent, every term is bigger than the one before it. Now, if we put our numbers in a graph (added as an image) we'll notice we obtain an exponential function, this is another detail we'll consider to find our equation, from here it's trial an error.

Our formula is:

$a_{n}=(n-1)n^{2}$

where n is the number of term:

$a_{n}=(1-1)1^{2}= (0)(1)=0$
$a_{n}=(2-1)2^{2}= (1)(4)=4$
$a_{n}=(3-1)3^{2}= (2)(9)=18$
$a_{n}=(4-1)4^{2}= (3)(16)=48$
$a_{n}=(5-1)5^{2}= (4)(25)=100$
$a_{n}=(6-1)6^{2}= (5)(36)=180$ it works!
$a_{n}=(7-1)7^{2}= (6)(49)=294$

I hope you find this information useful! Good luck!

5 0

3 years ago