High school solution to quadratic inequality with one variable - x2 + x > 3x + 1 -X2 + X is greater than or equal to 3x + 1 8x+16>-x2 X2 + 2x + 5 less than or equal to 0 -x+8x-3>0 x2-cx+c

High school solution to quadratic inequality with one variable - x2 + x > 3x + 1 -X2 + X is greater than or equal to 3x + 1 8x+16>-x2 X2 + 2x + 5 less than or equal to 0 -x+8x-3>0 x2-cx+c

-x^2+x>3x+1
x^2+2x+1

The side length of a square is equal to the radius of a circle. It is known that the area of a square is A2 square centimeter. What is the area of a circle
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Pai A2

If a multiplied by two-thirds = B divided by five sixths = C divided by four fifths = D multiplied by three fourths, and ABCD is greater than 1, the number of abcd4 is reduced to a large row

2/3a=6/5b=5/4c=3/4d
5 / 4 > 6 / 5 > 3 / 4 > 2 / 3 C

What is coefficient, degree, degree of polynomial, coefficient

The number in front of the letter is the coefficient, the number in the upper right corner of the letter is the degree, and the sum of the degrees of all letters in the polynomial is the degree of the polynomial

Know that the chord length is 20 meters, the distance between the arc and the chord is 7 meters, and calculate the radius of the circle

Using Pythagorean theorem, take half of chord length, let radius be r, then 100 + (R-7) * (R-7) = R * r

Sum 1 / 2 + 1 / 2 ^ 2 + 1 / 2 ^ 3 + by dislocation subtraction method +1/2^2000

Let s = 1 / 2 + 1 / 2 ^ 2 + 1 / 2 ^ 3 + +1 / 2 ^ 2000 has 1 / 2S = 1 / 2 ^ 2 + 1 / 22 ^ 3 + +1 / 2S = 1 / 2 + 1 / 2 ^ 2 + 1 / 2 ^ 3 + +1/2^2000-1/2^2-1/22^3-…… -1 / 2 ^ 2000-1 / 2 ^ 2001 = 1 / 2-1 / 2 ^ 2001, so s = 1-1 / 2 ^ 2000

Solution of equation 32-3x = 34

-3x=34-32
-3x=2
x=-2/3

Junior English 30 word essay with translation!

My winter holidays is very dull.I stay at home for most of time.Sometimes I visit my friends and play basketball with them.Sometimes I go shopping.So I feel very unhappy

What is the ratio of 1.6 to 8 / 9?

1.6 △ 8 / 9 = 8 / 5 × 9 / 8 = 9 / 5
Therefore, the simplest integer ratio is [9:5]
The ratio is [9 / 5]

X (- 1 / 10x + 11) = 280, solve the equation, there are chasing points

x(-1/10x+11)=280
-1/10x²+11x-280=0
x²-110x+2800=0
(x-40)(x-70)=0
x1=40 x2=70