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3 years ago

Jessica is on a the swim team. Each day she swims 8000m. Use the the fact to find how much this is in kilometers

Mathematics

2 answers:

Musya8 [376]3 years ago

7 0

Answer:

8 Kilometers

Step-by-step explanation:

1m=0.001km

So...

8000m=8km

iVinArrow [24]3 years ago

5 0

Answer:

0.8

Step-by-step explanation:

Jessica can swim a lap in seconds

Converting it into decimals,

Means seconds

Means Jessica can swim a lap in 29.4 seconds

Marta can swim a lap in 28.7 seconds.

So, Martha is faster than Jessica by seconds

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given that a1=5 and a2=15 are the first two terms of a geometric sequence, determine the values of a3 and a10. Show the calculat

Alekssandra [29.7K]

a_3 is 45 and a_10 is 98415

Step-by-step explanation:

Given

a_1 = 5

a_2 = 15

First of all we have to calculate the common ratio of the sequence. The common ratio is the ratio between two consecutive terms of a geometric sequence.

So,

$r=\frac{a_2}{a_1} = \frac{15}{5} = 3$

The explicit formula for geometric sequence is:

$a_n = a_1.r^{n-1}$

Putting the value of r and a_1

$a_n = 5.(3)^{n-1}$

Putting n=3 in the explicit formula

$a_3 =5.3^{3-1}\\= 5 * 3^2\\=5 * 9\\= 45$

Putting n=10 for tenth term

$a_{10} =5.3^{10-1}\\=5*3^9\\=5 * 19683\\=98415$

Hence,

a_3 is 45 and a_10 is 98415

Keywords: Geometric sequence, Explicit formula

Learn more about geometric sequence at:

#LearnwithBrainly

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3 years ago

isabel earned 350 points while she was playing blasting robot. isabel's mom earned 3 times as many points as isabel. how many po

almond37 [142]

Isabel's mom earned 1050 (350*3)

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3 years ago

Read 2 more answers

Which interval notation accurately represents the domain?

Sauron [17]

Answer:

the 1st one

next

the 3rd one

Step-by-step explanation: edg 2020

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3 years ago

Can anbody help? I need this to pass my exam

melamori03 [73]

Answer:

the third one

Step-by-step explanation:

search up 30 - 60 - 90 triangle rule for references

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3 years ago

Which is the equation of a circle with its center at (-4,2) and a radius of 4?

Snowcat [4.5K]

Answer:

(x +4)^2 + (y-2)^2 = 16

Step-by-step explanation:

We can write the equation for a circle with the formula

(x-h)^2 + (y-k)^2 = r^2

Where (h,k) is the center and r is the radius

We know the center is at (-4,2) and the radius is 4

(x- -4)^2 + (y-2)^2 = 4^2

(x +4)^2 + (y-2)^2 = 16

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3 years ago