All categories

3 years ago

What is the frequency of the function y = -5cos6x? a. -5/6 b. 1/6 c. 5 d. 6

Mathematics

1 answer:

olasank [31]3 years ago

4 0

The answer to your question is b

You might be interested in

15 pizzas are cut into 1/8 slices. How many slices of pizza are there?

postnew [5]

Answer: 120

Step-by-step explanation:

15x8=120

5 0

3 years ago

Read 2 more answers

Kristen invests $5,745 in a bank. The bank pays 6.5% interest compounded monthly. How long must she leave the money in the bank

s344n2d4d5 [400]

formula is $A=P(1-\frac{r}{n})^{nt}$

where A=final amount

P=principal

r=interest rate in decimal

n=number of times per year it is compounded

t=time in years

we want to find where

A=2P

and P=5745

and r=6.5%=0.065

n=monthly=12

remember that $ln(x^a)=a(ln(x))$

also that $(a^b)^c=a^{bc}$

$2(5745)=5745(1+\frac{0.065}{12})^{12t}$ , solving for t

divide both sides by 5745 to simplify things a bit

$2=(1+\frac{0.065}{12})^{12t}$ I'd rather not simplify this because it give us a decimals and those aren't exact, if we combine, we get 12.065/12 for inside parenthases

$2=(\frac{12.065}{12})^{12t}$

take ln of both sides

$ln(2)=ln((\frac{12.065}{12})^{12t})$

$ln(2)=(12t)ln(\frac{12.065}{12})$

divide both sides by $12ln(\frac{12.065}{12})$

$\frac{ln(2)}{12ln(\frac{12.065}{12})}=t$

using our calculator, t≈10.6927

so rounded, we get 10.7 years

3 0

3 years ago

For a set of five whole numbers, the mean is 4, the mode is 1, and the median is 5. What are the five numbers? Plz help me plz I

Zanzabum

Well if you just add the numbers u will get 5 6 7 8 9

5 0

3 years ago

Read 2 more answers

What percent of 2000 is 160?<br> Show work

ArbitrLikvidat [17]

Hello from MrBillDoesMath!

Answer:

.08%

Discussion:

Let the percent be denoted "p". Then

2000 * p% = 160 => ( as p% = p/100)

2000* p/100 = 160 =>

20p = 160 =>

p = 8 or .08%

Regards,

MrB

5 0

3 years ago

Read 2 more answers

Hannah earns $48 in 4 hours at this rate how many dollars will she earn in 20 hours?

baherus [9]

Hannah will earn $240 in 20 hours

Explanation: Since it tells you she earns $48 in 4 hours, you have to find how much she earns in 1 hour. So you do 48 divided by 4 (12) and that is how much she earns in 1 hour. Since the question is, how much does she earn in 20 hours, you multiply 12 x 20 and that equals 240 which means she earns $240 in 20 hours

8 0

3 years ago