Answer:
38.81cm³
Step-by-step explanation:
Volume of a sphere = 4/3πr³
Diameter is 4.2
radius= 4.2/2 = 2.1 or 21/10
4/3 × 22/7 × 21/10 × 21/10 × 21/10
= 4851/125
= 38.808
≈38.81cm³
The answer is : AB, CA, BC.
20 gallons
5 times 4 is 20
Hope this helps and have a great day!
Answer:
The consecutive integers are:
18, 19, 20
Step-by-step explanation:
Let the three consecutive integers be:
x
x+ 1
x+2
Now according to given conditions:
x + x+1 +x + 2 = 21 + 2x
Adding like terms:
3x + 3 = 21 + 2x
Taking terms with x on left side and constants on right side
3x - 2x = 21 - 3 (Sign of transferred terms will be changed)
x = 18
So the consecutive terms become:
x = 18
x + 1 = 19
x + 2= 20
I hope it will help you!
Answer:
2/3
Step-by-step explanation:
Since you need to find the mising number, I will give it the variable (v)
So the equation is now:
1½v is the same as 1½ x v
3½ + (1½v) = 4½
I need to undo addition so I subtract. To undo you need to look at the sign at the front of the number, since there was no negative sign I can infer that 3½ is positive. I need 3½ to cancel out and become 0, so I subtracted 3½ with 3½. What you do to one side of the equal sign, do to the other. 4½ subtract 3½ is 1.
The equation is now:
1½v = 1
I need to undo multiplication, so I divide 1½ by 1½. It cancels out, and I what you do to one side of the equal sign, you do to the other. 1 divides by 1½ is 2/3. (I used a calculator for this part)