Mathematics, English, Urgent, Thank you, English Mathematics Problem Solving Urgent

Pastry shop A sells cakes with a 20% discount, and shop B buys three and gets one free. If the original price of the cake is the same in both stores, which store is cheaper to buy a dozen cakes? and explain the answer.

a: 12*(

b: 12/(3+1)=3

therefore, bakeryb offers a larger discount for buying a dozen of cakes

So, it's cheaper to buy a dozen in store B.

A bakery sells cakes at a 20% discount. B Bakery offers a ** "Buy 3 Get 1 Free". If every cake had the same price at the bakery, if you bought a dozen cakes (12 pieces), which store would be cheaper? Please explain why.

The bakery has a 20% discount when selling cakes. Bakery B offers a promoted "Buy 3 Get 1 Free" for free. If each cake is the same for bread and pastry, which one can offer a bigger discount and buy a cake? Explain your answer.

A has to pay 12 * 80% = cake money, B only needs to pay 9 (get 3 free), B is more cost-effective.

Summary. If you haven't typed out the question, it is recommended to use translation software to translate the words you don't know, and then understand and solve the problem. Hope you can, thanks.

English math problem solving urgent.

If you haven't typed out the question, it is recommended to use translation software to translate the words you don't know, and then understand and solve the problem. Hope you can, thanks.

You can send me the question now.

You can write down the process, thank you, you can finish it before 12 o'clock.

You can see if you understand anything in this process, you can ask me.

The definition of a parabola is utilized.

The trajectory of a point in the plane at the same distance from a fixed point f and a fixed line l (f l) is called the parabola, the fixed point f is called the focus of the parabola, and the fixed line l is called the alignment of the parabola.

So: it's taking advantage ofThe property that the distance from the point to the focal point is equal to the alignment

The definition of a parabola, the distance to the fixed point (focal point) is equal to the distance to the fixed line.

This is also based on the two-point distance formula, af = (x0 1 4) + y0 0).

Since y = x, y0 = x0, so the right side of the equal sign is =x0 x0 2+(1 4) +x0=x0 +x0 2+(1 4)x0 +x0 2+(1 4) =x0+1 4).

Both sides are squared, so there is 5x0 4=x0+1 4, x0=1

As can be seen from the smile in the picture, the side length of the large square = the width of the rectangle + the long draft of the rectangle.

The side length of the small square = the length of the rectangle - the width of the rectangle.

The large square has an area of 49

So the side length is 7

The area of the small square is 4

So the side length is 2

Length + Width = 7 Length - Width = 2

So length = width =

The rough translation of the first question is as follows: shop A has 156 kilograms of rice and shop B has 72 kilograms of rice, and when the two stores sell the same amount of rice, shop A has four times as much rice left as shop B. Ask how much rice was sold.

You can set the remaining rice in shop B as x and the rice sold in each store as y. Then the remaining rice in shop A is 4x.

So the rice in store A can be expressed in this way, and the rice in store 4x+y=156b can be expressed as, x+y=72

The system of simultaneous equations is solved, x=28 y=44

So 44 kilograms of rice were sold in each store.

Well, since the question you are asking is somewhat challenging... I'll just have one question.

There are 156 kilograms of rice in shop B and 72 kg in shop B, and after each store sells the same amount of rice, shop A has four times as much rice as shop B. How much rice does shop A sell?

x kg of rice was buried, 156-x = 4 (72-x) 156-x = 288-4x

3x=132

x = 44a shop bought 44 kg of rice.

2.Machine A prints 12 more pages per minute than machine B, machine A and machine B type together in three minutes, 528 pages, at this speed, how many pages does machine B type in one minute?

Set the B machine to type x pages in one minute.

3x+3(12+x)=528

3x+36+3x=528

6x=492

x=82

Is the terrm in question 1 term?

a+b)^n=c(n,0)a^n+c(n,1)a^(n-1)*b+c(n,2)a^(n-2)*b^2+..c(n,n)b^n

The first problem asks us to find the first four terms, ranked by the power of x from low to high, and the second problem is that the coefficient of x is 1001, and we find the value of a.

1.The first four items should be 1+7*1*4x+21*1*(4x) +35*1*(4x) =1+28x+336x +2240x

2.There are two possibilities for generating x: 28x*ax+336x*3=(28a+1008)x

28a+1008=1001

a= -1/4

Prime Factors means to decompose prime factors, so: there is a prime factor of 30

The prime factor of 24 has

The greatest common prime factor is 3

5.(i)

Let x = cos, then -2sin +3cos = -2(1-cos) 3cos = 2cos 3cos -2 = 2x +3x-2 = 0

5.(ii)

According to the previous question, solving the equation gives x = -2 or x = 1 2.

Since x = cos, x = -2 is out of range, so x = 1 2 is in the range of 0 360°, = 60° or 300°