All categories

3 years ago

SA = πrs + π r^2 Can someone help me with this problem

Mathematics

2 answers:

ollegr [7]3 years ago

7 0

SA = pirs + pir^2
SA - $\pi$ r^2 = $\pi$ rs

Leya [2.2K]3 years ago

4 0

SA = pi (rs + r^2)
SA/pi = rs + r^2
(SA/pi) - r^2 = rs
[(SA/pi) - r^2]/r = s

SA/(pi*r) - r = s

You might be interested in

Don't espam plezz (个_个)

faltersainse [42]

Answer:

what do you get when you mix a dog and a fish

Step-by-step explanation:

a dogified fish

4 0

3 years ago

Simplify 64^-1/3 A. -4 B. -1/4 C. 1/4 D. 4

shepuryov [24]

Remember, the numerator of an exponenent represents the root. As well, a negative exponent means to take the reciprocal of the positive exponent ( $a^{-b} = \frac{1}{a^{b}}$ .

So, $64^{-1/3}$ is equal to $\sqrt[3]{64^{-1}}$ which is 1/4, because 1/4*1/4*1/4 is 1/64 (1/64 cubed root is 1/4).

For example, $a^{b/c} = \sqrt[c]{b^{b}}$

The answer is c.

5 0

3 years ago

Read 2 more answers

Traveling with the wind, Jerry takes 10 minutes to bicycle to a local library 2.5 km away. Coming back against the wind, it take

olganol [36]

7.5 km/h

Step-by-step explanation:

Let's assign the speed of Jerry in still air as x (in km/h)

Let's assign the speed of the wind as y (in km/h)

With the wind as Jerry’s back, he takes 10 minutes to get to the library. We can create the following equation. (we are converting the minutes to hours by dividing by 60);

2.5 / (x + y) = 10/60

10x + 10y = 150

x + y = 15

With the wind against Jerry, he takes 15 minutes from the library. We can create the following equation;

2.5 / (x-y) = 15/60

15x – 15y = 150

x – y = 10

We can now solve the simultaneous equation by subtraction;

x + y = 15

x – y = 10

2y = 5

y = 5/2 = 2.5

y = 2.5 km/h

x = 7.5 km/h

Learn More:

brainly.com/question/8046928

#LearnWithBrainly

7 0

4 years ago

The ratio of John's money to Jimmy's money is 5:8. Jimmy spent 1/4

erma4kov [3.2K]

Answer:

a. $3600

b. 6:5

Step-by-step explanation:

Put the question into an equation:

8x - 1/4 x 8x = 5x + 450

(simplify before solving) 6x = 5x + 450

(solve) 6x-5x = 450

x = 450

This means that Jimmy had 8 x 450 $ to start with = 3600

you can check this by subtracting a quarter of 3600 from 3600 and also multiplying 450 by 5 and then obtaining their difference. You get 450!

Now ratio of new amounts:

Jimmy now has: $2700

John still has: $2250

so ratio is 2700:2250

simplify to 6:5

Hope this helps

Please mark brainiest

3 0

4 years ago

For #12 and #13, make a function table of values for each function with the given input values.

g100num [7]

#12. When x = 4, y = 5(4) - 1 = 20 - 1 = 19
       when x = 12, y = 5(12) - 1 = 60 - 1 = 59
   when x = 0, y = 5(0) - 1 = 0 - 1 = -1
   when x = 0.5, y = 5(0.5) - 1 = 2.5 - 1 = 1.5

8 0

3 years ago