Four rectangles, each 100 cm long and 20 cm wide, are arranged around a square without overlapping, as shown.How long is each side of the middle square?

 

Li has some small tiles, each 3 cm by 2 cm, which he puts together without overlapping to make a filled-in square. What is the smallest number of these tiles for which this can be done?

A party game played with a six-sided dice is fair if the chance ofwinning is equal to the chance of losing each time the dice is rolled.Which one of these games is fair?

(A) You win if you roll a 6.

(B) You win if you roll a 2 or a 5.

(C) You win if you roll a number greater than 4.

(D) You win if you roll a number less than 3.

(E) You win if you roll an odd number.

 

miranda ties two ribbons in her hair each day before school.she can choose from her school's colours of red,blue and white.she has a bag of school ribbons with at least four of each colour in it.without looking , she pulls out some ribbons.how many must she pull out to be sure of a pair of the same colour?

miranda ties two ribbons in her hair each day before school.she can choose from her school's colours of red,blue and white.she has a bag of school ribbons with at least four of each colour in it.without looking , she pulls out some ribbons.how many must she pull out to be sure of a pair of the same colour?

dịch hộ luôn nhé,hứa tick,mik dang cần gấp

MNPQ is a square that is made up  of two identical rectangles and two squares of area 9cm² and 16cm².The area of the square MNPQ is ...... cm²

dịch đề tiếng việt,giải tiếng anh

For S = 1 + 4 + 7 + 10 + 13 + ... + 97 + 100

a)How many sums above?

b)Find the 50th number?

c)Find sum S?

100 + 100 + 200 + 300 + 500 +1000 =??

tick tui,tui tick lại

50 + 50 = ?

ai tick ,tick lại

which of the following values can replace the box so that

0.1 x 0.2 x 03 x 0.4 x ? = 0.12

which of the following values can replace the box so that

In a school of 1000 student,570 are gird .one-quarter of the students travel to school by bus and 313 boys do not go by bus.how many girds travel to school bus