A 15 foot ladder is placed against a wall.Suppose the bottom of the ladder slides away from the wall at a constant rate of 3 ft.How fast is the top of the ladder sliding down the wall when the bottom is 9 feet from the wall?Answera.- 9/4 ft b.9/4 ft c.-4/9 ft d.None ...
A ladder is leaning against a wall. The angle between the ladder and the ground is 60 degrees. If the length of the ladder is 6 meters, how far is the bottom of the ladder from the wall? A. 3 meters B. 3√3 meters C. 6 meters D. 6√3 meters 相关知识点: 试题来源: 解析...
9. A ladder is propped against a wall so that the angle the ladder makes with the wall is 45°. If the base of the ladder is 6 ft. from the base of the wall, how long is the ladder? Draw and label a picture as part of your ans...
from the wall. How many meters up the wall does the ladder reach ?( ). A. 24B. 26C. 28D. 30相关知识点: 试题来源: 解析 D Use the Pythagorean Theorem: 342−162=1156−256=900; the ladder reaches√900m=30m up the wall. 一架34 米的梯子靠在墙上.它的底座离墙 16 米.梯子爬...
A ladder 25 feet long is leaning against a wall that is perpendicular to level ground. The bottom of the ladder is 7 feet from the base of the wall. If the top of the ladder slips down 4 feet, how many feet will the bottom of the ladder slip ?() A. 4 B. 5 C. 8 D. 9 E...
百度试题 结果1 题目【题目】A 34m ladder is leaning against a wall . Its base is16m from the wall. How many meters up the walldoes the ladder reach ?().A.24B.26C.28D.30 相关知识点: 试题来源: 解析 【解析】D 反馈 收藏
against紧靠;倚;,根据句意,故填against 。【小题2】句意:Sheila生完孩子后继续工作。continue to do sth.表示继续去做某事;这里是一般过去时态,动词用过去式。根据句意,故填continued 。【小题3】句意:一个购物中心正在湖边的土地上建造。land的意思是“陆地,大地”,根据句意,故填land。【小题4】句意:...
百度试题 结果1 题目The ladder is leaned ___ the wall. A. against B. on C. in D. at 相关知识点: 试题来源: 解析 A。“lean against”表示“靠在……上”。反馈 收藏
结果1 题目 A 4 m ladder leans against a wall. The foot of the ladder makes an angle of 63° with the ground. How far up the wall does the ladder reach?() A.1.8 m B. 3.6 m C.4.5 m D. 7.9 m 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
opposite在……对面;on在上面;against靠着;above在上方;pick up捡起;make up编造;put up张贴;open up开放。根据“put a ladder...the wall”可知是把梯子靠在墙上,第一个空用against;根据“some beautiful pictures on the wall.”可知是在墙上挂一些画,第二个空用put up。故选C。