1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kitty [74]
2 years ago
6

Lana is the oldest of four sisters. Her youngest sister is half her age. The other two sisters are twins $2$ years younger than

Lana. When the four sisters' ages are added together, the result is $45$. If the youngest sister is $n$ years old, what is $n$?
Mathematics
1 answer:
ivanzaharov [21]2 years ago
6 0
N= 7
2n+n+2n-2+2n-2=45
7n-4=45
7n=49
n=7
You might be interested in
Multiple choice geometry helPppp
allsm [11]

Answer: D

Step-by-step explanation:

Use SOHCAHTOA

We are given the opposite of the angle and the hypotenuse. We can use the sine function to acquire the value of x°.

sin(x) = 7/13

Take the inverse sine on both sides by using a calculator to get:

x = 32.58°

5 0
2 years ago
Read 2 more answers
You decide to put $5,000 in a savings account to save for a $6,000 downpayment on a new car. If the account has an interest rate
Nuetrik [128]

Answer:

Approx 2.61 years.

Step-by-step explanation:

Given that you decide to put $5,000 in a savings account to save for a $6,000 down payment on a new car.

That means A=6000 and P=5000

If the account has an interest rate of 7% per year and is compounded monthly,

Then r=7%= 0.07 and n=12 (monthly)

Now we need to find about how long does it take until you have $6,000 without depositing any additional funds.

So let's plug these values into compound interest formula and fine time t

A=P\left(1+\frac{r}{n}\right)^{\left(nt\right)}

6000=5000\left(1+\frac{0.07}{12}\right)^{\left(12t\right)}

\frac{6000}{5000}=\left(1+0.00583333333333\right)^{\left(12t\right)}

1.2=\left(1.00583333333333\right)^{\left(12t\right)}

\ln\left(1.2\right)=12t\ ln[tex]\frac{\ln\left(1.2\right)}{12\ln\left(1.00583333333333\right)}=t

\left(1.00583333333333\right)[/tex]

2.61218303577=t

Hence answer is approx 2.61 years.

5 0
3 years ago
Read 2 more answers
If 2000 dollars is invested in a bank account at an interest rate of 4 per cent per year, then what is the amount in the bank af
frozen [14]

Answer:

A = $ 2,541.48

A = P + I where

P (principal) = $ 2,000.00

I (interest) = $ 541.48

Step-by-step explanation:

4 0
2 years ago
Write down three fractions with different denominators that add up to make
mihalych1998 [28]
To make what if u tell me then I can help u
7 0
3 years ago
Charlie has five times as many stamps is Ryan. They have 1608 stamps in all how many more stamps of Charlie have than Ryan
Rufina [12.5K]
Charlie has 964 more stamps than Ryan. Ryan has 322 stamps and Charlie has 1,286
6 0
3 years ago
Other questions:
  • The number of guests per month at a large resort is given in the table below, where f(x) is the number of guests, in hundreds, x
    5·2 answers
  • Simplify this equation ASAP please
    11·1 answer
  • Help!!!!!!!!!!!!!!!!!
    8·1 answer
  • Let ​ f(x)=x2+6x−16 ​. Enter the x-intercepts of the quadratic function in the boxes. and
    15·1 answer
  • What is the Unit rate of 12 dogs cost $300?
    6·2 answers
  • Two quantities,
    14·2 answers
  • 1. Ali's health club membership costs $19.95 per
    15·1 answer
  • you are considering changing insurance companies. your current company charges you $1,500 per year for homeowners insurance plus
    14·1 answer
  • B) Solve<br> (i)<br> 9x = 36
    5·2 answers
  • Consider the graph of f(x)=13x−2. How do the graphs of 2f(x), f(x+2), and f(x)+2 compare to the graph of f(x)? Drag tiles to the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!