Without changing the value of the fraction, the coefficients of the numerator and denominator of the following formulae are changed into integers (1) 1.03x + 0.02y/3.2x-0.5y (2) 3x of 4-2y of 3 / 1X of 3 + 5Y of 2

Without changing the value of the fraction, the coefficients of the numerator and denominator of the following formulae are changed into integers (1) 1.03x + 0.02y/3.2x-0.5y (2) 3x of 4-2y of 3 / 1X of 3 + 5Y of 2

(1.03x + 0.02y) / (3.2x-0.5y) numerator and denominator multiply by 100 at the same time
=(103x+2y)/(320x-50y)
(1 / 3x + 5 / 2Y) / (3 / 4x-2 / 3Y) numerator and denominator multiply by 12 at the same time
=(4x+30y)/(9x-8y)

Do not change the value of the fraction - 3x + 5Y / - 2x-y, so that the first coefficient of the numerator and denominator is a positive sign
Do not change the value of the fraction - 3x + 5Y divided by - 2x-y, so that the first coefficient of the numerator and denominator is a positive sign

-3x + 5Y divided by - 2x-y
=-（3x-5y)/[-(2x+y)]
=（3x-5y)/(2x+y)

What is the 360 quotient of the product of multiplying 12 by the difference between 34 and 19?

360÷ [（34-19）×12 ]
=360÷ [15×12]
=360÷180
=2

Is there any technique for converting a determinant into an upper or lower trigonometric determinant?
I just learned, I feel I can't do it

To calculate the determinant with the property trigonometry, we usually deal with it from left to right column by column. First, we exchange a relatively simple (or small) non-zero number to the upper left corner (in fact, it is also changed to the last row), and use this number to eliminate the rest of the number in the first column to zero

The dry bulb temperature is 23 ℃ and the wet bulb temperature is 17.5 ℃

Found online & nbsp; for reference only

One plus the square of x times the indefinite integral of SiNx plus one

Split x ^ 2 of (x + 1) ^ 2 into 1-2 / (x + 1) + 1 / (x + 1) ^ 2, split the integral addition and subtraction method (SiNx + 1), and finally use the partial integration method (move one of X + 1 after D)

(8 + 0.8) × 1.25

8x1.25+0.8x1.25=10+1=11

Equations: x-3y = 16 ① 3y-5x = 28 ②

x-3y=16① 3y-5x=28②
① + 2, get: - 4x = 44, x = - 11
Substituting ①, we get: - 11-3y = 16, 3Y = - 27, y = - 9
So x = - 11, y = - 9

20 of () = 85 divided by () = 0.85 = () divided by () = ()%

20 (17) = 85 divided by (100) = 0.85 = (17) divided by (20) = (85)%

Given that circle C is symmetric about y axis, passes through point (1,0), is divided into two segments by line y = x, and the ratio of arc length is 1:2, then the equation of circle C is?
Urgent!

For Y-axis symmetry, it can be set as X & # 178; + (y-b) &# 178; = C & # 178; through point (1,0) into 1 + B & # 178; = C & # 178; the arc length ratio of two arcs divided by y = x is 1:2, so the angle between the intersection of y = x and circle is 120, so the chord center distance is: the distance between the center of circle and y = x = 1 / 2 of radius | 0-B | / root sign 2 = C / 2