True or false 8.25 is greater than 8.25 repeating

If a1=10 and an+1=-5an-1 then find the value of a4<br><br>Please explain!

Umnica [9.8K]

Answer:

$a_4=-1271$

Step-by-step explanation:

We are given that:

$a_1=10$

And:

$a_{n+1}=-5a_n-1$

And we want to find:

$a_4$

This is a recursive formula. So we can simply substitute in each value. For instance, a₂ will be:

$a_2=a_{(1)+1}=-5a_{1}-1=-5(10)-1=-51$

Thus, a₃ will be:

$a_3=a_{(2)+1}=-5a_2-1=-5(-51)-1=254$

Finally, a₄ will be:

$a_4=a_{(3)+1}=-5a_3-1=-5(254)-1=-1271$

4 0

3 years ago

Find the length of the third side.if necessary, round to the nearest tenth 24 18

VashaNatasha [74]

Answer:

30

Step-by-step explanation:

\text{Legs: 18, 24}\hspace{20px}\text{Hypotenuse: ?}

Legs: 18, 24Hypotenuse: ?

a^{2}+b^{2}=

a

2

+b

2

=

\,\,c^{2}

c

2

The Pythagorean Theorem

18^{2}+24^{2}=

18

2

+24

2

=

\,\,c^{2}

c

2

Plug in. c is the hypotenuse.

324+576=

\,\,c^{2}

c

2

Square the numbers.

900=

\,\,c^{2}

c

2

Add.

\sqrt{900}=

900

=

\,\,\sqrt{c^{2}}

c

2

Square root both sides.

30=

\,\,c

c

The hypotenuse.

7 0

3 years ago

In a survey of 1000 social-media account holders aged 18 years and older conducted by a certain organization, it was found that

Talja [164]

I'm going to reword your question so it's easier to answer. I'm also going to pretend no one has 3 or more accounts because it's irrelevant.

22% have no accounts (220/1000)

What is the probability that 4 or more of the 10 participants has no account?

(220/1000)*(219/999)*(218/998)*(217/997)*(10 choose 4)

6 0

4 years ago

a middle school has 520 students, 75% of the students ride the bus to school. How many students do not ride the bus to school?

Nata [24]

Answer:

130 students do not ride the bus to school.

Step-by-step explanation:

520 * .75 = 390

390 students ride the bus to school.

520-390=130

130 students do NOT ride the bus to school.

Hope this helps! :)

6 0

3 years ago

A cylindrical pain can has a diameter of 12 centimeters and height of centimetrs which is closest to the volume of the paint can

Karolina [17]

The volume of the cylinder having diameter 12 cm and height of 4 cm is 452 $cm^{3}$ .

Given diameter of cylinder be 12 cm and height of cylinder be 4cm.

We are required to find the volume of cylinder.

Volume is the quantity of substance a container can hold in its capacity.

Diameter=12 cm

Radius=6 cm (Radius is always equal to half of diameter)

Volume of cylinder=π $r^{2} h$

We have to just put the values of r, h and π in the formula to get the volume of the cylinder.

Volume=π $(6)^{2} 4$

=3.14*4*36

=452.57 $cm^{3}$

After rounding off we will get 452 $cm^{3}$ .

Hence the volume of cylinder is 452 $cm^{3}$ .

Learn more about volume at brainly.com/question/463363

#SPJ4

Question is incomplete as it should include height of cylinder be 4cm.

4 0

2 years ago