18 out of 7 times 8 plus 18x out of 7 equals 36

18 out of 7 times 8 plus 18x out of 7 equals 36

8*18/7+x*18/7=36
8/7+x/7=2
8+x=14
x=6

How to solve the equation in two different ways?

Method 1
18*8+18X=315
18*(8+X)=315
8+X=315/18
X=315/18-8
Method 2
18*8+18X=315
18X=315-18*8
X=(315-18*8)/18

On the second day of the fraction and inequality of mathematical problems, there are wood!
1. Of the following judgments, the correct one is
A. When B = 0, the fraction A / B is meaningless
C. When a = 0, the value of fraction A / B is 0 (a, B are integers) d
2. Given that the lengths of two sides of a triangle are a and B respectively, and a > b, then the value range of the circumference C of the triangle is
A.3b＜C＜3a B.2a＜C＜ 2（a+b） C.2b+a＜C＜2a+b D.2b+a＜C＜3a-b

1. Choose B, the fraction in a must have letters on the denominator, but not 3 / X above the denominator. The condition that the value of fraction in C is 0 is that the numerator is zero and the denominator is not zero, while C does not say that B is not zero. D is obviously wrong. The denominator of fraction must have letters but not fractions. 2. Choose B and set the third side as C, then A-B < C < A + B, and C = a + B + C, in A-B < C < a

In the quadrilateral ABCD, angle a plus angle B equals 210 degrees, and angle c equals 4 angles D. find the degree of angle c and angle D?

210 + 4 angle D + angle d = 360
Angle d = 30 degrees
Angle c = 4, angle d = 150 degrees

When x = (), the values of algebraic formula 2 (3x-1) and 3 (2-5-3x) are opposite to each other?

2(3x-1)=-3(2-5/3x)
6x-2=-6+5x
x=-4

Given that the square of the parabola y is equal to the distance between a point on 4x and the focus is 5, then the coordinate of the point is?

It's just the method
The distance from the point on the parabola to the focus is equal to the distance from the collimator
You know the line. It's in this textbook
Then you can get the abscissa of the point
Then the coordinates of the point will have

1. If n + 1 power + (m-2) y = 4 of X is a binary one equation about X, y, then M=____ .n=_____ 2. In equation 5x + y = 18, the solutions of nonnegative integers are___
3. The positive integer solution of equation 2x + 3Y = 14 has____
4. The equation x + 3Y = - 10 has negative integer solutions_____
The absolute value of 5.2x + Y-2 + (y + 4) to the power of 2 = 0, find the value of (x + y) to the power of 2009

M is not equal to 2, n = 0
2.（1,13:）；（2,8）；（3,3.）
3.（1,4）,（4,2）
4.（-1,-3）,(-4,-2),(-7,-1)
5,.-1

8. The diagram on the right is the experimental circuit diagram of measuring the resistance of small bulb by voltammetry\
(1) fill in the symbols of ammeter and voltmeter correctly in the right figure. (2) when connecting the circuit, the switch should be closed or disconnected. (3) before closing the switch, the slide of the sliding rheostat should be adjusted to the position of point (a or b). The main function of the sliding rheostat in the circuit is. 4) when the small light bulb lights up, The indication of voltmeter and ammeter is as shown in the figure, then the voltage at both ends of the small bulb is, 5) if the voltage at both ends of the bulb is equal to the rated voltage of the bulb at the first measurement, and then it decreases gradually several times, what can you find by comparing several resistance values obtained in this way? Try to explain

Boss, you don't even have a picture. What can you do? Space imagination?
I can only tell you by force
1. The voltmeter is connected in parallel, and the current is connected in series
2. Disconnect
3. Maximum resistance! Current limiting resistance. Please look at the specific circuit yourself
4. Can't give answer! No picture!
5. The higher the temperature is, the greater the resistance value is! If the power is not the rated power, the resistance value is different!
Remember to give the picture next time

Factorization solves the quintic power-1 of X by substitution method

=(x-1)(x^4+x^3+x^2+x+1)

How many days, hours and seconds have passed since 8:23 on June 7, 2012 to 20:30 on October 26, 2012,

24 days from June 7 to June 30
31 July
31 August
30 days in September
October 26 20:30 25 + 20:30
Total use = 24 + 31 * 2 + 30 + 26 = 142 days
Hours = 141 * 24 + 20.5 = 3404.5 hours
Seconds = 3405.5 * 3600 = 12256200 seconds