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3 years ago

7

Will mark correct answer brainly.

1 answer:

Furkat [3]3 years ago

4 0

Answer:

Step-by-step explanation:

Volume of Cone =1 \div 3 \times \pi \times r { \times h}^{2}1÷3×π×r×h

2

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When money is spent on goods and services, those who receive the money also spend some of it. The people receiving some of the t

Bad White [126]

Solution :

If $S_n$ is the total spending generated after n transactions, then $a_n$ is the spending generated during the n-th transaction. Since the government spends D dollars, then $a_1$ = D.

Then the second person will receive D dollars and spend $D_c$ dollars. Therefore, $a_2=D_c$ . The next person will receive $D_c$ dollars, which means they are spending $a_3 = (D_c)c = Dc^2$ dollars. Therefore,

$a_1 = D$

$a_2=D_c$

$a_3 = Dc^2$

$a_4 = (Dc^2)c= Dc^3$

....

$a_n=Dc^{n-1}$

∴ $S_n=a_1+a_2+a_3+....+a_n$

$S_n = D+Dc+Dc^2+Dc^3+...+Dc^{n-1}$

$S_n= D(1+c+c^2+...+c^{n-1})$

$S-n=D . \frac{1-c^n}{1-c}$

5 0

3 years ago

Megan and her little sister, Nora, counted their Halloween ca 20 out of the 50 candy pieces were taffy. In Nora's bag, 11 out of

juin [17]

Answer:

i think megan

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A new car valued at $16,500 depreciates at a steady rate of 12% per year. What is the value of the car in 10 years?

olga55 [171]

Answer:

$4595.27

Step-by-step explanation:

f(x)=c*a^x

c = $16,500

a = 1 - 0.12 = 0.88

x = 10

16,500*0.88^10 = $4595.27

7 0

4 years ago

Read 2 more answers

−8 (1 + x) + 7x PLEASE HELP

Tanya [424]

Answer:

-8-x or -x-8 or x=-8

Step-by-step explanation:

Distribute the -8 to the (1+x)

-8-8x+7x

then add the -8x+7x

-8-x or -x-8

and if you want to solve for x

x=-8

7 0

3 years ago

Find tanθ if sinθ=−25√5 is in the third quadrant.

irinina [24]

Using a trigonometric identity, it is found that the tangent of the angle is of:

$\tan{\theta} = \frac{2}{11}$

<h3>How to find the sine of an angle given the cosine, or vice versa?</h3>

The sine and the cosine of the angle are related according to the following identity:

$\sin^2{\theta} + \cos^2{\theta} = 1$

For this problem, the sine is given by:

$\sin{\theta} = -\frac{2}{5\sqrt{5}}$

Hence the cosine is found as follows:

$\left(-\frac{2}{5\sqrt{5}}\right)^2 + \cos^2{\theta} = 1$

$\frac{4}{125} + \cos^2{\theta} = 1$

$\cos^2{\theta} = \frac{121}{125}$

$\cos{\theta} = \pm \sqrt{\frac{121}{125}}$

On the third quadrant the cosine is negative, hence:

$\cos{\theta} = -\frac{11}{5\sqrt{5}}$

<h3>What is the tangent of an angle?</h3>

The tangent of an angle is given by the sine divided by the cosine, hence:

$\tan{\theta} = \frac{-\frac{2}{5\sqrt{5}}}{-\frac{11}{5\sqrt{5}}} = \frac{2}{11}$

More can be learned about trigonometric identities at brainly.com/question/26676095

#SPJ1

4 0

2 years ago