33 ° and 25 ° 25 ′ 12 ″

33 ° and 25 ° 25 ′ 12 ″

33°19′8〃
25.419°

78 ° 25 ′ 12 ″

78°25′12″=78.42°

The intercept of the line 2x-3y-1 = 0 on the Y axis is__

The intercept of the line 2x-3y-1 = 0 on the Y axis is - 1 / 3
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12+56+1112+1920+2930+… +97019702+98999900．

12+56+1112+1920+2930+… +97019702+98999900=（1-12）+（1-16）+（1-112）+… +（1-19900）=1×99-（12+16+112+… +19900），=99-（11×2+12×3+13×4… +199×100），=99-（1-12+12-13+13−14+… +199-1100），=99-（1-1100），=99-99100，=981100．

Wang can, a fruit farmer in Baiyu village of Jiangyou, a "national civilized village" in Mianyang City, harvested 20 tons of loquats and 12 tons of peaches. Now he plans to rent 8 trucks of a and B to transport all the fruits to other places for sale. It is known that one truck of a can hold 4 tons of loquats and 1 ton of peaches, and one truck of B can hold 2 tons of loquats and peaches respectively. (1) how does Wang can arrange that the trucks of a and B can be transported to other places at one time How many plans are there in the place of sale? (2) If there is 300 yuan for each truck of type A and 240 yuan for each truck of type B, which scheme should Guonong Wang can choose to minimize the transportation cost? What is the minimum freight?

(1) Let x freight cars of type a be arranged, then (8-x) freight cars of type B be arranged. According to the meaning of the question, we get 4x + 2 (8 − x) ≥ 20x + 2 & nbsp; (8 − x) ≥ 12. Solving this inequality, we get 2 ≤ x ≤ 4. ∵ x is a positive integer. The values of X are 2, 3, 4

If the area of the triangle formed by the line y = 2x + B and the two coordinate axes is 9, then B =

Y = 2x + B and intercept (- B / 2,0) (0, b)
So s = 1 / 2 * | B / 2 * B | = B ^ 2 / 4 = 9
b=+/-6

It is known that the image of quadratic function passes through (3,0) (2, - 3), and the axis of symmetry is a straight line x = 1
Yes, please answer,

The symmetry axis is a straight line x = 1. Let the function expression be y = a (x-1) ^ 2 + B. after the image passes (3,0) (2, - 3), we can get: 0 = a (3-1) ^ 2 + B ` ` 1-3 = a (2-1) ^ 2 + B ` ` 2. The solution of 1 and 2 is a = - 3 / 2, B = 6. Then we can get the expression of a function image as y = - 3 / 2 (x-1) ^ 2 + 6

Idioms that begin with animals!
Success comes at once
Snake, rat,

The horse is the head, the horse is the deer, the horse is the tail, the horse is the tail, the horse is the tail, the horse is the tail, the horse is the tail, the horse is the tail, the horse is the tail, the bird is the bow, the bird is the face, the bird is the swan, the bird is the gun, the bird is the poor, the bird pecks the rabbit, the oatmeal, the rabbit is the dead, the dog cooks, the rabbit is the pitiful, the rabbit is flying, the collusion, the running, the greedy, the greedy, the greedy, the greedy, the greedy, the greedy

Construction workers use 2 parts of cement, 3 parts of sand and 5 parts of stone to prepare a kind of concrete. To prepare 6000 kg of this kind of concrete, they need more cement, sand and stone
Kilogram less?

Need cement 6000 ÷ (2 + 3 + 5) x2 = 1200 kg
Need sand 6000 ÷ (2 + 3 + 5) X3 = 1800 kg
Need stone 6000 ÷ (2 + 3 + 5) X5 = 3000 kg

Let u = R, a = {x | x ^ 2 + ax-12 = 0}, B = {x | x2 + BX + b2-28 = 0},
If a ∩ cub = {2}, find the value of real numbers a and B
All you have to do is find out B, even a, which is 4,

A∩CUB={2},
A gets 2, X in B doesn't get 2,
A x=2,4+2a-12=0,a=4,
A is x ^ 2 + 4x-12 = 0, x = 2, x = - 6,
X = - 6, B,
Bring into bx2 + BX + b2-28 = 0
36+6x+b^2-28=0,->b^2+6x+8=0,b=-2,-4
When B = - 2, x = 4, x = - 6,
When B = - 4, x = 2, x = - 6
a=4,b=-2