网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
If one pair of opposite sides of a square are increased in length by 20% and the other pair of sides are increased in length by 50%, by what percent is the area of the rectangle that results greater than the area of the original square?
A
10%
B
50%
C
70%
D
75%
E
80%
参考答案
参考解析
解析：
Suppose the length of a side of the original square is 10; then the area of that square is 10×10 or 100. Since one pair of opposite sides of the square are increased in length by 20%, and 20% of 10 is 2, the length of that pair of opposite sides of the new rectangle is 10+2 or 12. Since the other pair of sides are increased in length by 50%, and 50% of 10 is 5, the length of the other pair of opposite sides of the new rectangle is 10+5 or 15. The area of the new rectangle formed is 12×15 or 180, which is 80% greater than 100, the area of the original square.
Suppose the length of a side of the original square is 10; then the area of that square is 10×10 or 100. Since one pair of opposite sides of the square are increased in length by 20%, and 20% of 10 is 2, the length of that pair of opposite sides of the new rectangle is 10+2 or 12. Since the other pair of sides are increased in length by 50%, and 50% of 10 is 5, the length of the other pair of opposite sides of the new rectangle is 10+5 or 15. The area of the new rectangle formed is 12×15 or 180, which is 80% greater than 100, the area of the original square.
更多 “单选题If one pair of opposite sides of a square are increased in length by 20% and the other pair of sides are increased in length by 50%, by what percent is the area of the rectangle that results greater than the area of the original square?A 10%B 50%C 70%D 75%E 80%” 相关考题
考题
--- The shoes don’t fit me. Would you please show me _________?---- Sure. Here you are.A. the other one B. the others C. another pair D. another one
考题
In most WANs, the network contains numerous cables or telephone lines, each one connecting a pair ofA．hostsB．routersC．serversD．networks
考题
Which of the following LAN technologies is considered fast Ethernet and uses two pairs of cabling,one pair for sending and the other pair for receiving?()
A.100Base-T4B.100Base-TXC.100Base-XD.100Base-FX
考题
1OOBASE-TX makes use of two pairs of twisted pair cable，one pair used for(73) and the other for reception．A．detectionB．transmissionC．relationD．Connection
考题
It is not possible to determine whether both continents are moving in opposite directions or whether one continent is stationary and the other is drifting away from it.
考题
The best grouping of teaching when the students are given the task to work out answers to a reading comprehension is__________．A.one-to-one
B.groupwork
C.pair-work
D.solowork
考题
The TCP protocolis a （71） layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides ofthe globe.A.physical
B.network
C.transport
D.application
考题
One of the best ways for people to keep fit is to__________healthy eating habits.A.grow
B.develop
C.increase
D.raise
考题
单选题If A (-1, 1) and B (3, -1) are the endpoints of one side of square ABCD, what is the area of the square?A
12B
16C
20D
25E
36
考题
问答题A rectangle is equal in area to a square with sides of length 12. Is the diagonal of the rectangle greater in length than 20? (1) The rectangle has a length of 16. (2) The rectangle has a width of 9.
考题
单选题In the event of damage to the DEEP WATER SHIP which results in flooding to one of the lower-hull tanks，pump from（）.A
nearby damaged tanksB
nearby undamaged tanks containing ballastC
tanks on the opposite cornerD
the opposite trim tank
考题
单选题When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.A
use the magnets one at a time，putting one in one side and then one on the opposite side，one step higherB
use the magnets in pairs，starting at the top，with trays at the highest point of travelC
use the magnets in pairs，from the bottom up，with the trays at the lowest point of travelD
fill all the trays with magnets，then remove them one-by-one until the deviation is removed
考题
单选题In Saussure’s view, a sign is just like a coin. It has two sides. One is the signifier, the other is called the _____.A
significantB
signifiedC
signD
index
考题
单选题Neap tides occur when the（）.A
Moon is in its first quarter and third quarter phasesB
Sun and Moon are on opposite sides of the EarthC
Moon's declination is maximum and opposite to that of the SunD
Sun and Moon are in conjunction
考题
单选题Which of the following LAN technologies is considered fast Ethernet and uses two pairs of cabling,one pair for sending and the other pair for receiving?（）A
100Base-T4B
100Base-TXC
100Base-XD
100Base-FX
考题
单选题A traffic separation zone is that part of a traffic separation scheme which（）.A
is between the scheme and the nearest landB
contains all the traffic moving in one directionC
is designated as an anchorage areaD
separates traffic proceeding in one direction from traffic proceeding in the opposite direction
考题
单选题When the voltage remains constant and the resistance is increased in a series circuit, the flow of current （）A
increases by the square of the original valueB
increasesC
remains the sameD
decreases
考题
单选题Porsena’s was ______.A
one of the biggest tombs of the lot.B
a big tomb consisting of ten pyramids.C
a monument with a square base whose sides were 19 metres long and 15 metres high.D
a monument of rectangular masonry.
考题
单选题The oil is drawn from a drain tank through （）, one of a pair of pumps, into one of fine filters.A
a strain tankB
a head tankC
a service tankD
a strainer
考题
单选题When the current in a power transmission line is increased, the power loss （）A
increases as the square of the currentB
decreases as the square root of the currentC
remains the same, as it is independent of current flowD
increases in direct proportion as the current
考题
填空题One side of square A is 1/2 the length of the diagonal of square B. If the area of square A is 16, what is the area of square B?a + b- 4z = 500a +b + 6z= 1200____
考题
单选题A shoe store charges $39 for a pair of a certain type of sneaker. This price is 30% more than the amount it costs the shoe store to buy one pair of these sneakers. A sales associate can purchase a pair of these sneakers at 20% off the store’s cost. How much would an associate pay for a pair of these sneakers (excluding sales tax)?A
$31.20B
$25.00C
$24.00D
$21.84E
$19.50
考题
单选题Which of the pair can be distinguished by only one feature?A
/s,/z/B
/p/,/d/C
/g/,/h/D
/ l/,j/
考题
单选题According to the experiment, the towels with the “Fair and Square” label_____.A
sold better at a higher priceB
became more popular at a lower priceC
were more competitive even with an increased priceD
were thought to be of higher quality even with a lower price
热门标签
最新试卷
