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Sergeeva-Olga [200]
3 years ago
7

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 - \pir^2 = \pirs

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
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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<br> A. -4<br> B. -1/4<br> C. 1/4<br> 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 <em>x </em> (in km/h)

Let's assign the speed of the wind as <em>y </em>(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. (<em>we are converting the minutes to hours by dividing by 60</em>);

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
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