Answer:
Step-by-step explanation:idk
The first circle has circumference 10π and area 25π² and the second circle has circumference 12π and area 36π².
Use the formulas area = πr² and circumference = 2πr
The algebraic expression for: the sum of a number and 5 decreased by twice the number is (n + 5) - 2n
<h3>Algebra</h3>
let
sum of a number and 5
= n + 5
decreased by twice the number
= -2(n)
= - 2n
sum of a number and 5 decreased by twice the number
= (n + 5) - 2n
= n + 5 - 2n
= 5 - n
Therefore, the algebraic expression which can be used to represent; the sum of a number and 5 decreased by twice the number is (n + 5) - 2n
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Answer: No. When 1 is substituted for the variable, the result is a false statement
Step-by-step explanation:
3x - 6(5x + 5) = 9x + 6
3x - 30x - 30 = 9x + 6
-27x -30 = 9x +6
-27x - 9x = 30 +6
-36x = 36
x = -1.
Substitute with x = -1 :
-3 - 6(-5 + 5) = -9 +6
-3 -30 + 30 = -3
-3 = -3
Therefore, the correct option is:
No. When 1 is substituted for the variable, the result is a false statement
Answer:
A negative integer
Step-by-step explanation:
Given the expression;
-15/3
= (-5 * 3)/3
= -5 * 3/3\
= -5 * 1
= -5
Hence the resulting number is a negative integer
