Answer:
the rational numbers are _ A, F, D,and B
Answer:
19/9
Step-by-step explanation:
We are given repeating decimal number 2.1¯.
We know 2.1¯ = 2.1111..... repeating 1's.
Let us assume x is a fraction equals given repating decimal number.
And set it as a first eqaution.
x = 2.1111..... ------------- (equation 1).
Multiplying equation both side by 10 ( because only one digit is repeating after decimal, we multiply by 10).
On multiplying by 10 we get
10*x = 10*2.1111.....
10x = 21.1111...... ----------------- (equation 2)
Subtracting equation 1 from equation 2, we get
10x = 21.1111......
-x = -2.1111.....
_____________
9x = 19.
Now, dividing both sides by 9. we get
The total surface area is 171.5 square centimeters. Lateral surface area is 150 cm^2.
Answer: constant of variation k = 36 the variation equation, y = 36xz^3
Step-by-step explanation:
y varies jointly as x and the cube of z. This means that y varies directly as x and directly as z^3
In order to remove the "variation" symbol and replace it with "equal to" symbol, we will introduce a constant of variation, k
y = kxz^3
y=432 when x= 4 and z=3
We will substitute these values of x, y and z into the equation to determine the value of k
432 = k × 4 × 3
432 = 12k
k = 432/12 = 36
We will substitute the value of k into the equation. Substituting k = 36 into equation y = kxz^3
The equation becomes
y = 36xz^3
Answer:
is a mathematics problem and is so easy and square and triangle and rectangle and circle formulas
