4.2 is positive. The opposite of a positive number is negative. Therefore, the opposite of 4.2 is -4.2
Answer:
x=4
Step-by-step explanation:
2(3x+1)=4x+5(x-2)
distribute 2 through the parentheses:
6x+2=4x+5(x-2)
distribute the 5 through the parentheses:
6x+2=4x+5x-10
Collect like terms:
6x+2=9x-10
Move the variable to the left-hand side and change its sign:
6x-9x=2=-10
Move the constant to the right-hand side and change its sign:
6x-9x=-10-2
Collect like terms:
-3x=-10-2
-3x=-12
Divide -3 on both sides to get x alone:
x=4
Hope this helped!! :)
Using the volume of a sphere, the total volume of air inside six of Jake's basketballs is of 2140.8 cubic inches.
<h3>What is the volume of a sphere?</h3>
The volume of a sphere of radius r is given as follows:
From the problem, since the properly inflated basketball measures 8.8 inches across, the diameter is of 8.8 inches, hence the radius is:
r = 8.8/2 = 4.4 inches.
Then the volume in cubic inches of a single ball is:
V = 4 x pi x (4.4)³/3 = 2140.8 cubic inches.
For the six balls:
6 x 356.8 = 2140.8 cubic inches.
More can be learned about the volume of a sphere at brainly.com/question/25608353
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I didnt have room for 7 so ill just write it here
20O-12x<60
-12x<-140
X>11.6666..or 11 2/3