All categories

4 years ago

If An=An−1 + 4 and A5 = 12, what is A7?

Mathematics

1 answer:

dangina [55]4 years ago

3 0

Answer:

The frequency of A7, which is two octaves above A5, is 3520 (880 x 2 x 2) Hz. The octave term is used in the musical composition to relate the same notes in the higher or lower scale of notes. The note in the one octave higher scale have a doubled frequency than in the neutral scale and The note in the one octave lower scale have a half frequency than in the neutral scale.

Step-by-step explanation:

MARK BRAINLIEST PLEASE!!!!!!!

You might be interested in

What is the 4th term in the sequence? C(1)=56 C(n)= c(n-1)•1/2

Anton [14]

Answer:

The 4th term is 7

Step-by-step explanation:

we have

$C(n)=C(n-1)\frac{1}{2}$

$C(1)=56$

step 1

Find C(2)

For n=2

$C(2)=C(1)\frac{1}{2}$

$C(2)=(56)\frac{1}{2}=28$

step 2

Find C(3)

For n=3

$C(3)=C(2)\frac{1}{2}$

$C(3)=(28)\frac{1}{2}=14$

step 3

Find C(4)

For n=4

$C(4)=C(3)\frac{1}{2}$

$C(4)=(14)\frac{1}{2}=7$

therefore

The 4th term is 7

3 0

4 years ago

A square has an area of 40 units^2. Write an expression for the perimeter of the square.

marta [7]

Answer:

$\sqrt{40}$ =s

Step-by-step explanation:

The area of a square can be found by multiplying two of the sides of the square. So P=s*s, of "Perimeter equals side length time side length". We also know that all the sides of a square are the same side, so the perimeter of the sqaure can be found using the square by doing p= $s^{2}$ .

6 0

3 years ago

a company has $6582 to give out in bonuses, An amount is to be given out equally to each of the 32 employees. how much will each

dybincka [34]

6582 dollars, divided equally amoung 32 employees.

Let's use multiplication to guess and get a close answer, it's a little easier than division:

32 x 100 = 3200 (but we need about twice this amount)

32 x 200 = 6400 (we still have 182 more dollars left over)

So now we know that each employee gets about 200 dollars, but let's get more specific.

Let's try 32 x 5, which equals 160. We can't "fit" any more in, because all that's left is 22 dollars.

We have 32 x 200 and 32 x 5, which together is 32 x 205 (= 6560) and the closest we can get to $6582 if we're splitting all of the money evenly.

Each employee should recieve $205.

6 0

3 years ago

How do I solve this problem? You drive your car on a cold day (20^oF Outside) the engine overheats to about (220^oF). When you p

GaryK [48]

$ln(T- \frac{20}{200})=-0.11t \\ e^{ln(T- \frac{20}{200})}=e^{-0.11t} \\ T- \frac{20}{200} =e^{-0.11t} \\ T-0.1=e^{-0.11t} \\ T=e^{-0.11t}+0.1$
Then, now that we have solved for T, we can evaluate and solve for t=20 minutes.
$T=e^{-0.11t}+0.1 \\ T=e^{-0.11*20}+0.1 \\ T=e^{-2.2}+0.1 \\ T=0.11+0.1 \\ T=0.21$

7 0

3 years ago

Claire traveled 701 miles. She drove 80 miles every day. On the last day of her trip she only drove 61 miles. Write and solve an

mina [271]

Answer:

Claire traveled for 9 days.

Step-by-step explanation:

Given:

Total Distance traveled = 701 miles

Distance traveled each day = 80 miles

Distance traveled on last day = 61 miles

We need to find the number of days Claire traveled.

Solution:

Let the number of days Claire traveled be denoted by 'd'.

Now we can say that;

Total Distance traveled is equal to sum of Distance traveled each day multiplied by number of days and Distance traveled on last day.

framing in equation form we get;

$80d+61=701$

Now Subtracting both side by 61 using Subtraction Property of Equality we get;

$80d+61-61=701-61\\\\80d = 640$

Now Dividing both side by 80 we get;

$\frac{80d}{80}=\frac{640}{80}\\\\d=8$

Hence Claire traveled 80 miles in 8 days and 61 miles on last day making of total 9 days of travel.

7 0

4 years ago