英语数学题初中

1. Two numbers differ by 57. Their sum is 185. Find the numbers. Choices for the smaller number:54 64 74. 2.A bus went 318 km farther than a car. The car went one third as far as the bus. How far did each vehicle travel? Choices for the smaller number: 147 151 159 3.one number is four times another number. The larger number is also 87 more than the smaller number. Find the numbers. Choices for the smaller number: 29 30 33 4.A clown weights 60 lb more than a trapeze artist. The trapeze artist weighs two thids as much as the clown. How much does each weigh? choices for the weight of the trapeze artist : 110 120 125 5. The U.S. Senate has 100 memebers, all Democrats or Republicans. Recently there were 12 more Democrats than Republicans. How many Senators from each political party were there at that time? Choices for the number of Republicans: 38 42 44 6.The ninth grade class has 17 more girls than boys. there are 431 students in all. how many boys are there? how many girls are there? Choices for the number of boys: 191 202 207 7. Elena has one and a half times as much money as Ramon.Together they have 225. how much money does each have? Choices for Ramom's amount;80 90 95 8. Western state college is 18 years older than southern state. western is also 2 and the half times as old as southern. how old is each? Choice for southern state's age:12 14 18

我英语很好 但数学这方面...

得好长时间做啊

If you dream of becoming a spaceman after you grow up , get started now ! A spaceman needs a strong body and mind. See here what Shenzhou Ⅵ spacemen are able to do . Don’t you have a long way to go? Shenzhou Ⅵ spacemen are able to live upside down(头朝下). They said this not just during sleep, but also when eating and going to the toilet. Before they flew into space, they had had lots of practice. Each upside- down training time lasted for 20 days. In Shenzhou Ⅵ,Chinese spacemen aren’t just spaceship drivers but also machine repairers and scientists.They have to know every part of the spaceship and how it works. If something goes wrong, they must know how to repair it. Also they do scientific experiments in space. Shenzhou VI spacemen know how to live in the wild. they took a knife, a gun （枪）and some dye（ 染料） with them into space. If they land in a forest, the knife and gun can protect them from wild animals. If they fall into the sea, the dye can color the water around them yellow. This can help people find them easily on the sea. Shenzhou VI spacemen can’t get dizzy(眩晕的) A spaceship is not a plane. When it goes up, the extra gravity force（重力）can break people’s bones. Spacemen must have strong bodies for this. hey can’t get a headache or be sick. With many things to tale care of, they’ve got no time for sickness

-5/2(a-3)除以16/a-3+(a+3) a-5/2(a-3)除以16/a-3+（a+3)(a-3)/(a-3) a-5/2(a-3)除以(16+a^2-9)/(a-3) a-5/2(a-3)除以(7+a^2)/(a-3) a-5/2(a-3))乘以(a-3)/(7+a^2) (a-5)/ 2(7+a^2)