What is the circumference and diameter of the bowl?

What is the circumference and diameter of the bowl?

2 えr

It's five centimeters in circumference. What's its diameter?

It has a circumference of five centimeters and a diameter of five centimeters
5 △ 3.14 = 1.59cm

It's four in circumference. What's the diameter?

4/3.14
Remember to adopt it

Simple calculation of 1.8 * 7 / 9 * 7 / 9 * 1.8
1.8×7/9×7/9×1.8

1.8×7/9×7/9×1.8=（0.2x7)^2=1.4^2=1.96

Simple calculation (must be simplified)

16.8÷(0.5+3.7)×0.04
=16.8÷4.2×0.04
=4×0.04
=0.16

If the distance between the intersection a of the straight line y = KX + B and the X axis and the origin o is 7, then the solution of the equation KX + B = 0 is -?

X = 7 or - 7 KX + B = 0, that is, y = 0 and a is on the X axis and the distance to the origin is 7, so x = 7 or - 7

If the line y = KX + B passes through the first, second and third quadrants and the distance from the intersection point of X axis to the origin is 2, then the solution of equation KX + B = 0 is____________

Go through the first, second and third quadrants
So the point of intersection with the x-axis is to the left of the origin
That is, when y = 0, X

Given that the solution set of the inequality kx-2 > 0 (k is not equal to 0) about X is x > - 3, then the intersection of the line y = - KX + 2 and the X axis is?
I think KX > 2, because x > - 3, so k = - 2 / 3
But if both sides of the inequality multiply or divide by a negative number (k), shouldn't the direction of inequality be changed?
Then it will not be established if you go in//
How to do this question
(if the answer is good, I will add 100 points, hope to give the process and answer my above questions)

1. Let K be less than 0,
KX > 2, so x is less than 2 / K
Then we can never guarantee that x is absolutely greater than - 3
2. Let K be greater than 0
KX > 2, so x is greater than 2 / K
2 / K is always positive and X is always greater than - 3
K is positive
Generally speaking, K belongs to (0, positive infinity)
There should be no exact value for K
It should be X

Given that the solution set of the inequality kx-2 ＞ 0 (K ≠ 0) about X is x ＞ - 3, then what is the intersection of the line y = - KX + 2 and the X axis? Why?

Solve the inequality kx-2 ＞ 0 about X,
KX > 2,
The solution set of inequality kx-2 ＞ 0 (K ≠ 0) is: X ＜ - 3,
The solution of 2 / k = - 3 is k = - 2 / 3
The analytic expression of the straight line y = - KX + 2 is y = 2 / 3x + 2,
In this formula, let y = 0, and the solution is: x = - 3,
So the intersection of the line y = - KX + 2 and the X axis is (- 3,0)
So the answer to this question is: (- 3,0)

On the inequality of X - kx-2 is greater than 0 (k is not equal to 0), the solution set is x is less than 3, the intersection coordinates of the line y = - K-2 and X axis

Suppose k > 0, the inequality can be reduced to X