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DanielleElmas [232]
1 year ago
12

selim is ordering concrete spheres to place as barriers in the city park. the spheres cost $2 per square foot, and selim can spe

nd $20 per sphere. what is the maximum diameter of the spheres he can purchase? a. 0.89 ft b. 3.56 ft c. 1.78 ft d. 1.59 ft
Mathematics
1 answer:
hoa [83]1 year ago
8 0

The maximum diameter of the spheres he can purchase is  1. 78 ft. Option C

<h3>How to determine the diameter</h3>

The formula for area of a sphere is expressed as;

Area = 4 πr²

If Selim paid $2 per square foot and have a maximum of $20 per square

The area he can purchase is;

= $20/$2

= 10$

Substitute the value into the formula

10 = 4πr²

10 = 4 × 3. 142 ×  r²

10 = 12. 568r²

Make 'r²' the subject

r² = 10/ 12. 568

r² = 0. 79

Find the square root of both sides

r = √0. 79

r = 0. 89

But diameter = 2(radius)

Diameter = 2 × 0. 89 = 1. 78 ft

Thus, the maximum diameter of the spheres he can purchase is  1. 78 ft. Option C

Learn more about spheres here:

brainly.com/question/10171109

#SPJ1

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Schach [20]

(f+g)(x) = 8x+2

(f-g)(x) = 4x-6

Step-by-step explanation:

Given

f(x) =6x-2\\g(x)=2x+4

we have to find

<u>a. (f+g)(x)</u>

(f+g)(x)=f(x)+g(x)\\=(6x-2)+(2x+4)\\=6x-2+2x+4\\=6x+2x-2+4\\=8x+2

<u>b. (f-g)(x)</u>

(f-g)(x)=f(x)-g(x)\\=(6x-2)-(2x+4)\\=6x-2-2x-4\\=6x-2x-2-4\\=4x-6

Hence,

(f+g)(x) = 8x+2

(f-g)(x) = 4x-6

Keywords: Functions, Operations on Functions

Learn more about functions at:

  • brainly.com/question/4021035
  • brainly.com/question/4034547

#LearnwithBrainly

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3 years ago
K &amp; P Toy Store is having a storewide sale. Remote control cars are on sale for 70% of their regular price, and sports equip
lord [1]

Answer:

Answer and steps in picture.

5 0
3 years ago
Light bulbs cost £2.90 each.
s344n2d4d5 [400]

Answer:

$2.60

Step-by-step explanation:

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Hope this helps

7 0
3 years ago
Read 2 more answers
A=c+(-10) Solve for c in terms of other variables.
True [87]
To do this we need to move 10 to other side.  To accomplish this you just need to add 10 to both side since (-10) 

so 
A+ 10 = c -10 + 10 
we get
A+ 10 = c

lets say it wasn't -10 but positive 10. 

A = c + 10  then we would subtract 10 from both sides

A -10 = c + 10 - 10 
we get 
A  - 10 = C 
5 0
3 years ago
There is a line that travels through the points (-3,5) and (2,1). What is the slope?
timama [110]

Answer:

slope = \frac{y2-y1}{x2-x1}

\frac{1-5}{2 - -3} = \frac{-4}{5} =-0.8

Step-by-step explanation:

3 0
2 years ago
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