All categories

2 years ago

Elena has $80 in a savings account. The interest rate is 5% per year and 1 point

Mathematics

1 answer:

Trava [24]2 years ago

6 0

Don’t know just need points

You might be interested in

In how many year the interest will became equal to the principal is rs.1200 is deposited at the rate of 25% in a bank

mrs_skeptik [129]

Given:

Principal = Rs. 1200

Rate of interest = 25%

To find:

The time in which the interest will became equal to the principal.

Solution:

We have,

$P=1200$

$r=\dfrac{25}{100}$

$r=0.25$

If interest is equal to the principal, then

$Amount=Principal+Interest$

$Amount=1200+1200$

$Amount=2400$

The formula for amount is:

$A=P\left(1+r)^n$

Substituting $A=2400, P=1200, r=0.25$ in the above formula, we get

$2400=1200(1+0.25)^n$

$\dfrac{2400}{1200}=(1.25)^n$

$2=(1.25)^n$

Taking log on both sides, we get

$\log2=\log(1.25)^n$

$\log2=n\log(1.25)$ $[\because \log a^b=b\log a]$

$\dfrac{\log2}{\log(1.25)}=n$

$n\approx 3.11$

Therefore, the interest will became equal to the principal in about 3.11 years.

4 0

2 years ago

What is the end behavior of the function <img src="https://tex.z-dn.net/?f=f%28x%29%3D-%5Cfrac%7B1%7D%7B4%7D%20x%5E2" id="TexFor

Anarel [89]

Answer:

Option A will be your answer

Step-by-step explanation:

hope it helps ..

have a great day!!

5 0

2 years ago

Y=-2 <img src="https://tex.z-dn.net/?f=y%20%3D%20%20-%202%20%5C%5C%204x%20-%203y%20%3D%2018" id="TexFormula1" title="y = - 2

Morgarella [4.7K]

I think is
4x - 3 (-2) = 18
4x + 6 = 18
4x = 12
x = 3

5 0

3 years ago

Which number produces a rational number when added to 1/2

JulijaS [17]

Answer:

C. 0.314.

Step-by-step explanation:

1/2 is rational. The answer is another rational number.

The only rational number in the list is 0.314.

3 0

2 years ago

Read 2 more answers

What‘s 1+1? ;);) have a good day :)

galben [10]

Answer: 2 :))

Step-by-step explanation: hope you also have a good day!!

4 0

3 years ago

Read 2 more answers