Use formula method to solve the following equation: 0.3x ^ 2 + x = 0.8 x ^ 2 + 3 = 2 √ 3x 0.3x^2+x=0.8 x^2+3=2√3x

Use formula method to solve the following equation: 0.3x ^ 2 + x = 0.8 x ^ 2 + 3 = 2 √ 3x 0.3x^2+x=0.8 x^2+3=2√3x

one
∵△=b^2-4ac=1-4*0.3*(-0.8)=1.96>0
∴x1=(-b+√△)/(2*a)=(-1+1.4)/0.6=2/3
x2=(-b-√△)/(2*a)=(-1-1.4)/0.6=-4
two
∵△=b^2-4ac=(-2√3)^2-4*1*3=0
∴x1=x2=(-b)/(2*a)=√3

Solving the equation 3x-8 = x

When 3 < m < 8, the solution of the equation 3x-8 = m (x-1) is ()
A. No solution B. positive number C. zero D. negative number

From the equation 3x-8 = m (x-1), we can get: x = m − 8m − 3, ∵ 3 < m < 8, ∵ M-3 > 0, M-8 < 0, ∵ m − 8m − 3 < 0, ∵ x < 0

4 / 9 of 36 is (); 2 / 3 of () is equal to 8 / 15 of 60. The total edge length of a cuboid is 96 cm, its length is 10 cm and its width is 8 cm
The height is () cm

16 48 6

Find the rule 0,2,3,3,6,4,9,5 () ()

Odd bits are 0, 3, 6 and 9
Even digits are 2, 3, 4 and 5
So 0,2,3,3,6,4,9,5 (12) (6) (15)

Mathematical problem (to calculate formula) (to be very simple)
45 by 76 + 38 by 76-76 by 45 + 76 by 2

45 by 76 + 38 by 76-76 by 45 + 76 by 2
=76x(45+38-45+2)
=76x40
=3040

What is the content of Article 38 of the road traffic safety law of the people's Republic of China

Article 38 vehicles and pedestrians shall pass in accordance with traffic signals; in case of on-site command by traffic police, they shall pass in accordance with the command of traffic police; on roads without traffic signals, they shall pass under the principle of ensuring safety and smoothness

Which of the numbers 36, 27, 11, 0, 45, 39, 2, 91, 83, 9, 32, 74 are even, prime, odd, combined?
List them

Even 36,0,2,32,74
Prime numbers 11, 91, 83,
Odd 27,11,45,39,91,83,9
Total 36.27.45.39.9.32.74

The rivers in China, known as the rivers on the ground, are as follows:

The Yellow River

New goal grade 7 Volume 2 English book P11 3A

New goal grade 7 Volume 2 English book P11 3A
Translation:
Welcome to garden district
Turn left on first avenue to enjoy the quiet streets and small parks of the city. Walk through the park on Central Avenue. Opposite the park is an old-fashioned hotel. Next to the hotel is a small house with an interesting garden. This is the beginning of your garden trip
Original text:
Welcome to the Garden District
Turn left on First Avenue and engoy the city's quiet streets and small parks.Take a walk through the park on Center Avenue.Across from the park is an old hotel.Next to the hotel is a small house with an interesting garden.This is the beginning of the garden tour.