All categories

4 years ago

$1500.00 in a simple interest savings account. Two years later, the total account balance is $1665.00.

Mathematics

1 answer:

antoniya [11.8K]4 years ago

6 0

Answer:

interest rate=45.04

I after 8 years=5994

step on step explainaton:

I=PRT

1500=1665×r/100×2

r=45.04

I after 8 years= I=PRT

=1665×45/100×8=5994

You might be interested in

A ski slope drops 30 feet for every horizontal 70 feet

ASHA 777 [7]

The angle of depression is

tan^-1 3/7 = 23.2 deg

8 0

4 years ago

A cylindrical can, open at the top, is to hold 840 cm3 of liquid. Find the height and radius that minimize the amount of materia

ycow [4]

Answer:

the radius of the base is equal to $x=2\sqrt[3]{\frac{105}{\pi } }$

And the height is equal to:

$y=\frac{840}{\pi(2\sqrt[3]{\frac{105}{\pi}})^{2} }$

Step-by-step explanation:

We write the volume function

$f(x,y)=840=\pi x^{2} y$ where x is the radius of the base and y is the height of the cylinder

$y=\frac{840}{\pi x^{2} }$

The surface of a cylinder is given by

$S(x)=\pi x^{2} +2\pi xy=\pi x^{2} +\frac{1680}{x}$ on the interval from 0 to infinity

We now determine the critical values by differentiating and making the equation equal to 0

$f'(x)=2\pi*x- \frac{1680}{x^{2}} =\frac{2\pi x^{3}-1680}{x^{2} } =0$

This equation have 2 complex solutions and one real solution

$x=2\sqrt[3]{\frac{105}{\pi } }$

For x=0 and infinity the equation goes to infinity also so the radius of the base is equal to $x=2\sqrt[3]{\frac{105}{\pi } }$

And the height is equal to:

$y=\frac{840}{\pi (2\sqrt[3]{\frac{105}{\pi } })^{2} }$

$y=\frac{840}{\pi(2\sqrt[3]{\frac{105}{\pi}})^{2} }$

7 0

3 years ago

26 divided by 5 1/2 I dont know!!

zavuch27 [327]

Answer:

4.727

Step-by-step explanation:

An easy way to think of something being divided by a fraction is by turning the fraction into a decimal. In this case, it's 5 1/2, which is the same as 5.5. So, you can just calculate 26 / 5.5, by hand, or on a calculator, and the answer is 4.727.

<em>Hope this helps!</em>

5 0

4 years ago

Read 2 more answers

to approach the runway, a pilot of a small plane must begin a 10 degree descent from a height of 1790 feet above the ground. To

vodomira [7]

2.0 miles is the answer

3 0

4 years ago

Read 2 more answers

Question one

Stolb23 [73]