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2 years ago

I need help with this please hurry it's timed

Mathematics

1 answer:

rodikova [14]2 years ago

4 0

Answer:

I think B 82.3%

Step-by-step explanation:

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A pendulum swings 80 cm on its first swing, 76 cm on its second swing, 72.2 cm on its third swing, and 68.59 cm on its fourth sw

Kisachek [45]

Answer:

$a_{n} = 80*(0.95)^{n-1}$

Step-by-step explanation:

Geometric sequences:

The nth term of a geometric sequence is given by the following equation.

$a_{n+1} = ra_{n}$

In which r is the common ratio.

This can be expanded for the nth term in the following way:

$a_{n} = a_{1}r^{n-1}$

In which $a_{1}$ is the first term.

In this question:

$a_{1} = 80, r = \frac{68.59}{72.2} = \frac{72.2}{76} = \frac{76}{80} = 0.95$

a. If the pattern continues, what explicit formula can be used find the distance of the nth swing?

$a_{n} = a_{1}r^{n-1}$

$a_{n} = 80*(0.95)^{n-1}$

7 0

3 years ago

Kareem rented a truck for one day. There was a base fee of $14.95 , and there was an additional charge of 93 cents for each mile

allochka39001 [22]

Answer:

He drive the truck <u>292</u> miles.

Step-by-step explanation:

Given:

Kareem rented a truck for one day.

There was a base fee of $14.95, and there was an additional charge of 93 cents for each mile driven.

Kareem had to pay $286.51 when he returned the truck.

Now, to find the miles he drive the truck.

So, we deduct the base fee first:

$286.51 - $14.95 = $271.56.

So, the remaining amount = $271.56

Now, we divide the remaining amount by by charge of 93 cents for each mile driven:

Converting cents into $ = 93 cents = 93 ÷ 100 = $0.93.

$\$271.56\div \$0.93$

$=292\ miles.$

Therefore, he drive the truck 292 miles.

3 0

3 years ago

If a is an integer, when is a/b always equal to an integer?

riadik2000 [5.3K]

'a/b' is an integer when 'b' is a factor of 'a'.

7 0

3 years ago

Of the four choices given, which two, when written as a system, have a solution of (-4,5)?

Svetach [21]

Answer:

both choices with 2x+y = -3

Step-by-step explanation:

to have the solution (-4, 5), that point must be on both equations/functions, meaning it must be on either one.

in other words, if the point is not on at least one of the functions, it cannot be a solution for that system.

the given function

2x + y = -3

looks like for the point (-4, 5)

2×-4 + 5 = -3

-8 + 5 = -3

-3 = -3

correct.

but

-2x + y = -3

looks like for (-4, 5)

-2×-4 + 5 = -3

8 + 5 = -3

13 = -3

wrong. the point is not on this function.

as we can therefore rule out 2 of the answer options, the other 2 most be correct.

4 0

3 years ago

How do i find the answer to my question…

Aleksandr-060686 [28]

Answer:

1. 15

2. 27

3. 4

4. 72

5. 2

6. 9

7. 1

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

I need help with this please hurry it's timed​

I need help with this please hurry it's timed