New observation on mathematics in the second volume of the eighth grade 4 1 to 42 14. The store delivers 9/ 10 tons of sugar, sells this batch of sugar 1/3 tons, and sells sugar 1/3 tons. * * How many tons of sugar did you sell?
9/10 * (1-1/3)-1/3 = 4/15 (ton)
15, when beautifying the sixth grade of the campus, 120 potted flowers were placed in front of the campus. In the fifth grade, the potted flowers placed in front of the building were one sixth less than those in the sixth grade. How many potted flowers were put in two grades?
120 * (1-1/6+1) = 220 (river basin)
16, 200 fry per square meter, how many can be stocked? Upper bottom: 30m, lower bottom: 80m, and height: 90m.
(30+80)*90/2*200=990000
The answer to the question P3, 14 in the second volume of the new observation of mathematics in the eighth grade suggests that the questions should be posted one by one in the future, otherwise it is impossible to get the answer as you ask now.
Who has1(1) OE = ofae+AF = 3 \ 2ab?
(2) Take the midpoint m of AD and connect it with OM.
∵ diamond ABCD inner angle = 60.
∴ equilateral triangle ABD≌ equilateral triangle BCD
And o, m is the midpoint between BD and AD.
∴om= 1\ab=ob om∨ab，
Triangle ODm is an equilateral triangle.
So △OMF≌OBE ASA
so much/many
20 1 1 new observation on the first volume of eighth grade mathematics. All the answers on page 34 are only 20 points. I have a new observation, but you are all on the 34th side! People asked me 1 questions and gave me 100!
The new observation of mathematics in the first volume of the eighth grade is 75 to 80 pages, and the answer is urgent .75.76. 1.C 2。 C 3。 A 4。 C
Two. DADDCB
Two. Determine the function image according to the actual problem
That's all DDCA knows. 15. 16 I don't know,
77.78 face 1 to 6 BCCBBB
7.k > negative half value
8.m=-2。 decrease
9.-3
10.( 1)K is not equal to 3.
(2)K>-3
(3)Kb>c
16.2
17.3
18 lazy typing,
79.80 noodles
1 to 6 BADDBA
7.y=x-20 x≥20
8.-2
9.6
10.( 1)m≠ 3/5
(2)m=- 1
1 1.B 12。 C
13 ... four
14. 16
15.25
16. 17 Do it yourself.
Thank you for your adoption. 200% correct rate. Our teacher has changed.
Typing is difficult.
New observation of mathematics 2065438+answers to the first volume of Grade 8 in 2002, P 1 10.0.0.
Where is the Xinhua Bookstore where I bought the new observation of mathematics in the second volume of the eighth grade?
I'm sorry I can't find what you want online. I suggest you buy one without spending money in 20 yuan, which is very convenient in all bookstores. This is really hard to do online, so I can only help you here. Sorry again.