There are no lengths to which an addict will not go to obtai

If a right triangle has edge lengths a-b ,and a+b (a and b are both positive integers)
,then the perimeter of the triangle might be?

2道英语题（加分）
1.The three sides of a triangle are of lengths 1,m,and n,respectively.The numbers 1,m,and n are positive integers,1≤m≤n.Take n=9 and find the number of different triangles of the described kind.
2.To number the pages of a bulky volume the printer used 1890 digits.How many pages has the volume?
请翻译,能解答更好!谢谢!

请教一个英语单复数问题
The length of the rods.（具有相同的长度）
The lengths of the rods.（长短各不相同）
是这样用的吗?

英语翻译
The legs of right triangle ABC have lengths 3 and 4.What is the perimeter of a right triangle with each side twice the length of its corresponding side in triangle ABC?

The lengths of two rivers are in the raito 12:7.The lenght of the longer one is 42km.Find the length of the shorter one.

The man went to great lengths to prove that the diamonds were real.
是什么从句 to great lengths 是定吗
to prove 是状吗

And if that happens,it's amazing the lengths we'll go to,to get them back.go 后面的to

在书上看到这样一句话：
to such+名词 结构位于句首时用倒装
To such lengths did her story go that every child began to feel sleepy.
意思我理解,但是to 会不会是书上有误?是too such吗?

two sides of a triangle have lengths 28.2cm and 18.8cm,the angle between them is 41.5,find the len
two sides of a triangle have lengths 28.2cm and 18.8cm,the angle between them is 41.5,find the lengths of the sides of an isosceles triangle with the same area,

英语翻译
Describe how to measure a variety of lengths with appropriate accuracy by means of tapes ,rules micrometers and calipers,using a vernier as necessary.

4.A botanist is studying the petal lengths,measured in millimeters,of two species of lilies.The boxplots above illustrate the distribution of petal lengths from two samples of equal size,one from species A and the other from species B.Based on the boxplots,which of the following is a correct conclusion about the data collected in this study?
(A) The inter-quartile ranges are the same for both samples.
(B) The range for species B is greater than the range for species A.
(C) There are more petal lengths that are greater than 70mm for species A than there are for species B.
(D) There are more petal lengths that are greater than 40mm for species B than there are for species A.
(E) There are more petal lengths that are less than 30mm for species B than there are for species A.
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5.A delivery service places packages into large containers before flying them across the country.These filled containers vary greatly in their weight.Suppose the delivery service’s airplanes always transport two such containers on each flight.The two containers are chosen so their combined weight is close to,but does not exceed,a specified weight limit.A random sample of flights with these containers is taken,and the weight of each of the two containers on each selected flight is recorded.The weights of the two containers on the same flight
(A) will have a correlation of 0
(B) will have a negative correlation
(C) will have a positive correlation that is less than 1
(D) will have a correlation of 1
(E) cannot be determined from the information given
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6.A wildlife biologist is interested in the relationship between the number of chirps per minute for crickets (y) and temperature.Based on the collected data,the least squares regression line is ,where x is the number of degrees Fahrenheit by which the temperature exceeds 50 degrees.Which of the following best describes the meaning of the slope of the least squares regression line?
(A) For each increase in temperature of 1 degree Fahrenheit,the estimated number of chirps per minute increases by 10.53.
(B) For each increase in temperature of 1 degree Fahrenheit,the estimated number of chirps per minute increases by 3.41.
(C) For each increase of one chirp per minute,there is an estimated increase in temperature of 10.53 degrees Fahrenheit.
(D) for each increase of one chirp per minute,there is an estimated increase in temperature of 3.41 degrees Fahrenheit.
(E) The slope has no meaning because the units of measure for x and y are not the same.
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只需答出每题考查的知识点和正确选项

length,lengths,long的区别
区别,用法.

看懂英语的来
The lengths of the diagonals of a rhombus are 2 in.and 5 in.Find the measures of the angles of the rhombus to the nearest degree.题目要求的是什么?菱形的四条边既然都是相等的,那么diagonals不也应该是相等的吗?为什么题目给的长却不一致,一个2in一个5in?