All categories

3 years ago

TRICKY TRICKAY TRITIR

Mathematics

2 answers:

irina1246 [14]3 years ago

6 0

Answer:

ur rate will be 2%

Step-by-step explanation:

on applying the formula u get 2% as ur rate

Darina [25.2K]3 years ago

4 0

Answer:

Step-by-step explanation:

I= PRT

300 = (3000)(0.5)R

300 = 1,500R

0.2 = R

0.2*10

2% = the rate

You might be interested in

Need help with this question.

Iteru [2.4K]

Take 3÷2.6=1.153846repeating. So around $1.15. To check you can take the decimal point times by 2.6 and it will give you three.

7 0

3 years ago

Can you please help me

kirill [66]

Answer:

Step-by-step explanation:

3 0

3 years ago

A right circular cylinder is inscribed in a sphere with diameter 4cm as shown. If the cylinder is open at both ends, find the la

SOVA2 [1]

Answer:

$8\pi\text{ square cm}$

Step-by-step explanation:

Since, we know that,

The surface area of a cylinder having both ends in both sides,

$S=2\pi rh$

Where,

r = radius,

h = height,

Given,

Diameter of the sphere = 4 cm,

So, by using Pythagoras theorem,

$4^2 = (2r)^2 + h^2$ ( see in the below diagram ),

$16 = 4r^2 + h^2$

$16 - 4r^2 = h^2$

$\implies h=\sqrt{16-4r^2}$

Thus, the surface area of the cylinder,

$S=2\pi r(\sqrt{16-4r^2})$

Differentiating with respect to r,

$\frac{dS}{dr}=2\pi(r\times \frac{1}{2\sqrt{16-4r^2}}\times -8r + \sqrt{16-4r^2})$

$=2\pi(\frac{-4r^2+16-4r^2}{\sqrt{16-4r^2}})$

$=2\pi(\frac{-8r^2+16}{\sqrt{16-4r^2}})$

Again differentiating with respect to r,

$\frac{d^2S}{dt^2}=2\pi(\frac{\sqrt{16-4r^2}\times -16r + (-8r^2+16)\times \frac{1}{2\sqrt{16-4r^2}}\times -8r}{16-4r^2})$

For maximum or minimum,

$\frac{dS}{dt}=0$

$2\pi(\frac{-8r^2+16}{\sqrt{16-4r^2}})=0$

$-8r^2 + 16 = 0$

$8r^2 = 16$

$r^2 = 2$

$\implies r = \sqrt{2}$

Since, for r = √2,

$\frac{d^2S}{dt^2}=negative$

Hence, the surface area is maximum if r = √2,

And, maximum surface area,

$S = 2\pi (\sqrt{2})(\sqrt{16-8})$

$=2\pi (\sqrt{2})(\sqrt{8})$

$=2\pi \sqrt{16}$

$=8\pi\text{ square cm}$

4 0

3 years ago

You believe in the power of compounding and decide to save $1 per day by avoiding the purchase of a soda. You deposit the $1 at

Fiesta28 [93]

Answer:

option (c) $18,032

Step-by-step explanation:

Data provided in the question;

Amount deposited at the end of each day = $1

Interest paid = 8% compounded daily = 0.08

Daily interest rate = $\frac{\textup{0.08}}{\textup{365}}$ = 0.000219

Duration = 20 years = 20 × 365 days = 7300 days

Now,

the Future value is given as:

Future value = Part payment × $\frac{(1+r)^n-1}{r}$

here, r is the interest rate

n is the duration

thus,

Future value = $1 × $\frac{(1+0.0002192)^{7300}-1}{0.0002192}$

Future value = $18033.56 ≈ $18,032

Hence, the correct answer is option (c) $18,032

7 0

3 years ago

A voter polling research group determined that between 40% and 46% of the voting population would vote for the republican candid

erastova [34]

Answer:

the answer to his one is B

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers