Answer:
-18
Step-by-step explanation:
-4 + 2 * -7 = -18
-18 is the answer
Group like terms first
3a-6a+2ab-ab+2b
add
-3a+ab+2b
that is simplified
Answer:
5x+4
Step-by-step explanation:
4x+3x+4-2x
Combine like terms
4x+3x-2x +4
5x +4
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
X-0.075x=7400
Solve for x
0.925x=7400
x=7,400÷0.925
X=8,000
