In the unequal quadrilateral ABCD, how to make the area of triangle Dec equal to the area of quadrilateral ABCD and e point on BC

Sabcd = sabed + SDEC > SDEC
Unless Abe three points coincide, but not quadrilateral

180 yuan for 2 tea plates and 5 tea cups. If the unit price of the tea cup is 6 yuan less than that of the tea plate, the unit prices of the tea cup and the tea plate are

There are two ways
1: Suppose all tea cups. 2x6 = 12 (yuan) 180-12 = 168 (yuan) tea cup: 168 divided by (2 + 5) = 24 (yuan) tea tray 24 + 6 = 30 (yuan)
2: Suppose it's all tea plates. 5x6 = 30 yuan 180 + 30 = 210 yuan 210 / (2 + 5) = 30 yuan 30-6 = 24 yuan

Is the number in the triangle at the bottom of the plastic cup 5 or 7?

"No.5" PP: used in microwave oven heating lunch box, etc
When putting into the microwave oven, the cover should be removed for use: the only plastic box that can be put into the microwave oven can be reused after careful cleaning. It should be noted that some microwave oven lunch boxes are indeed made of No. 5 PP, but the cover is made of No. 1 PE. Because PE can't withstand high temperature, it can't be put into the microwave oven together with the box, Take off the cover first
Other types of "No.7" PC: used in water bottle, water cup, milk bottle, etc
PC glue releases bisphenol a when heated: it is a widely used material, especially in milk bottles, but it is controversial because it contains bisphenol A, If a small amount of BPA is not converted into the plastic structure of PC, it may be released into food or drink. Therefore, care should be taken when using this plastic container
Cleaning measures against bisphenol A
The higher the temperature is, the more BPA will be released and the faster the release rate will be. Therefore, it is not advisable to use a PC water bottle to hold hot water so as not to increase the release rate and concentration of BPA (if any)
Don't heat the kettle when using it. Don't use dishwasher or dryer to clean the kettle. Don't let the kettle be directly exposed to the sun. Before the first use, clean it with baking soda powder and warm water, and dry it naturally at room temperature. Because bisphenol A will release a lot during the first use and long-term use. If the container is injured or damaged, it is recommended to stop using it, Because if there are tiny pits on the surface of plastic products, it is easy to hide bacteria
Health tips
If you are still worried about the harm of plastic products to human body under high temperature, it is suggested that you should not use it to hold high temperature liquid, but use containers made of purple sand cup, bone china cup, stainless steel cup, glass cup, paper container and other materials, which can not only reduce the harm to human body, but also reduce the use of petrochemical products and make our environment more beautiful
Let's create a beautiful environment for low carbon life and work together!

In a subtraction formula, the sum of the subtracted, the subtracted and the difference is 168, the ratio of the subtracted and the difference is 3:4, and the subtraction is ()

Let the subtraction be 3x, the difference be 4x, and the subtracted be y
y-3X=4x
y+3X+4X=168
The solution is x = 12
3X=36

In a subtraction formula, the sum of the subtracted and the difference is 168, the subtraction is 3 / 4 of the difference, and the difference is? To be calculated

Let the subtraction be 3x, the difference be 4x, and the subtracted be y
y-3X=4x
y+3X+4X=168
The solution is x = 12
4X=48
So the difference is 48

In a subtraction formula, the sum of the subtracted, the subtracted, and the difference is 120. The difference is three times that of the subtracted. What is the difference?

Subtracted = subtracted + difference = 120 / 2 = 60
Because the difference is three times the subtraction
So the difference is: 60 / (3 + 1) * 3 = 45

What number times 0.4% = 1479.69 '

Rational number 5: - 203 + 21 + 322 = 0 66 + 21-503 = 0 6 + (- 2) = 20 + (- 5) = 0 8 + (- 0) = 2 (- 7) + (- 2) = - 3 wow, your o requirement is too n difficult D, I have a lot of questions, but it's very difficult to fight. If I can't get up to e, I can't answer 8 for you
Y = {KQ} y = {SZB}

How much is 73 degrees centigrade? Find the formula

Fahrenheit = 9 / 5 ° C + 32
C = 5 / 9 (f-32)
So (73-32) * 5 / 9 = 22.7

Is the earthwork calculation formula length by width equal to area by height?

When the earthwork is piled into a cube, it can be calculated in this way. When the earthwork is piled into a cone with a certain slope, the formula of (upper bottom area + lower bottom area) / 2 × height should be used to calculate the earthwork

71 + 73 + 69 + 74 + 68 + 70 + 69 = how to simplify this formula

71+73+69+74+68+70+69
=70×7+(1+3-1+4-2-1)
=490+4
=494

In the unequal quadrilateral ABCD, how to make the area of triangle Dec equal to the area of quadrilateral ABCD and e point on BC