3 times 1.8 + 3x = 6 to solve the equation

3 times 1.8 + 3x = 6 to solve the equation

3×1.8+3x=6
5.4+3x=6
3x=6-5.4
x=0.2

Solving equation a (2x + 1) = 3x + 7

a(2x+1)=3x+7
2ax+a=3x+7
（2a-3)x=7-a
① When a = 3 / 2, the equation has no solution
② When 2a-3 ≠ 0
x=7-a/2a-3
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(x-1/2)(2x+1)(2x^2+1/2)(4x^4+1/4)(16x^8+1/16)/(256x^16+1/256)=?3Q

（X-1/2)(2X+1)(2X^2+1/2)(4X^4+1/4)(16X^8+1/16)÷（256X^16-1/256) ＝{[(2X-1)(2X+1)]/2}(2X^2+1/2)(4X^4+1/4)(16X^8+1/16)÷（256X^16-1/256) =(4X^2-1)(2X^2+1/2)(4X^4+1/4)(16X^8+1/16)÷（256X^16-1/256) =...

Let's look at the following expressions: X, - 2x ^ 2,4x ^ 3,16x ^ 5
(1) What do you find by calculating the quotient of any one of these monomials divided by the one before it
(2) What is the nth monomial and verify the result of (1)

The original problem is: X, - 2x ^ 2,4x ^ 3, - 8x ^ 4,16x ^ 5,
(1) All businesses are the same, it's - 2x,
(2) The nth monomial is - 1 / 2 (- 2x) ^ n
Please try the verification process yourself

The sum of two circles equals the sum of three triangles, the sum of four circles equals the sum of three squares, the sum of one triangle plus one square plus two circles equals 180
How many are the angles, squares and circles,

The circle is 45
The triangle is 30
The square is 60

If the values of X and Y in the solution of the system 4x + 3Y = 14kx + (K − 1) y = 6 are equal, then K is ()
A. 4B. 3C. 2D. 1

From the meaning of the question, we can get: x = y, ∧ 4x + 3x = 14, ∧ x = 2, y = 2, and substitute it into the equation KX + (k-1) y = 6 to get 2K + 2 (k-1) = 6, and the solution k = 2

(5 / 8 + 1 / 25) multiply by 8 + 17 / 25

(5 / 8 + 1 / 25) multiply by 8 + 17 / 25
=（5/8）×8+(1/25)×8+17/25
=5+(8/25+17/25)
=5+1
=6;
If you don't understand this question, you can ask,

If 3 * 3-1 * 1 = 8 * 1,5 * 5-3 * 3 = 8 * 2,7 * 7-5 * 5 = 8 * 3,9 * 9-7 * 7 = 8 * 4, the discovered rule is expressed by an algebraic formula with n

The square difference of any two consecutive odd numbers is a multiple of 8
﹙2n＋1﹚²－﹙2n－1﹚²＝8n

3 / 2 minus 5 / 5 plus 7 / 12 minus 9 / 20 plus 11 / 30 minus 143 / 13 plus 15 / 56

545 out of 560

A triangular vegetable plot is drawn on the paper at the scale of 1:400. The bottom length is 10 cm and the height is 8 cm. What is the actual area? Use the proportion to solve

Let the actual length of the base be a centimeter and the actual height be B centimeter
10:a=1:400
A = 4000 cm = 40 m
8:b=1:400
B = 3200 cm = 3.2 m
40x3.2 △ 2 = 64 square meters