Answer:
11.31
Step-by-step explanation:
<h3>given:</h3>
The diameter of the circle is 3.6 units.
<h3>to find:</h3>
Value of "a"
<h3>steps</h3>
Circumference of a circle in terms of radius:
Circumference = 2 · π · r = 2 · 3.14 · 1.8 = 11.31 (*)
In terms of diameter:
Circumference = π · d = 3.14 · 3.6 = 11.3 (*)
In terms of area:
Circumference C = √4·π·A = √4·π·10.18 = 11.31 (*)
Answer: 28 and 18
Step-by-step explanation:
I used the guess and test strategy to find that:
28 - 10 = 18
28 + 18 = 46
For this case we must raise an inequality.
We have "d" dollars initially and they are spent 12. Then:

At least 51 dollars remain, then, the sign of inequality is greater or equal in favor of the expression
, that is:

Resolving:

There are at least 63 dollars left in the account.
Answer:

The answer for this question should be the last pair which is 6, -6
The Four basic Mathematical Operations are:
•Addition
•Subtraction
•Multiplication
•Division