How to calculate x * 60% = (x + y) 48%

How to calculate x * 60% = (x + y) 48%

That is, 0.6x = 0.48x + 0.48y. Finally, 12x = 48y. Y = 1 / 4x

60x + 50x = 60 (x + 15) + 40 (x + 15)

60x+50x=60(x+15)+40(x+15)
110x=60x+900+40x+600
110x=100x+1500
110x-100x=1500
10x=1500
x=150

1000 / (40-x) + 60x = 1000, what is the solution of X

1000/(40-x)+60x=1000
That is 1000 + 60x (40-x) = 40000-1000x (x is not equal to 40)
It is reduced to - 60x @ + 3400x-39000 = 0
Namely 3x@-170x+1950=0
It's OK to solve this equation, but the result has a root sign. I don't know if I can solve it correctly. I'm purely calculating by mouth. Excuse me

As shown in the figure, in △ ABC, AC = 6. Point D is on edge BC, and ab = ad, M is the midpoint of BD, and N is the midpoint of edge AC. (1) find the length of Mn; (2) connect DN. If ∠ adn = ∠ C, find the length of AD

(1) Connect am ⊥ AB = ad, M is the middle point of BD, ≁ am ⊥ BD, ∵ n is the middle point of side AC. ≁ Mn = 12ac (the middle line of the hypotenuse of the right triangle is equal to half of the hypotenuse), ∫ Mn = 3; (2) ∫ adn = ∫ C, ∧ Dan = ∧ Dan, ∧ adn ∧ ACD, ∧ ADAC = anad, ∧ ad2 = 6 × 3, ∧ ad = 32

The plural of stomach Mary fox China
Urgent ～～～～～～～～～

five sets of document
stomachs
foxes
Mary is a person's name, usually not in the plural
Chinese plural is also Chinese

In △ ABC, if Sina = 2cosbcosc, then tanb + Tanc=______ ．

Tanb + Tanc = sinbcosb + sinccosc = sinbcosc + cosbsinccosc = sin (B + C) cosbcosc = sin (π − a) cosbcosc = sinacos bcosc = 2, so the answer is: 2

i'd like some rice and

I'd like some rice and some soup

As shown in the figure, the side of the first square is the hypotenuse of the first isosceles right triangle, and the right side of the first isosceles right triangle is the side of the second square,
The side of the second square is the hypotenuse of the second isosceles right triangle. Connect them in turn. Let the side length of the first square be 2
(1) The second square has side length A2 and area S2;
(2) The area of the third and fourth square S3, S4;
(3) Through observation and research, write the area of the 2011 SQUARE s2011

1. According to the meaning of (A2) & 35\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\s6 = 1 / 8 so s

English antonym query
Exterior--
inlet--
The opposite of these two words

interior
outlet

Ask a question about sine cosine theorem of senior two
In the triangle ABC, a = 1, B = 45 degrees, s = 2, then the circumscribed circle diameter of the triangle is?
Please tell me the way of thinking... I don't need a definite result... Just tell me how to think

C is obtained from S = 0.5ac * SINB
B is obtained from B ^ 2 = a ^ 2 + C ^ 2-2ac * CoSb
R is obtained from a / Sina = B / SINB = C / sinc = 2R