1488-672=816. Doris Bought 3x more skirt than dresses, 816-8=808, 808/4=202, 202+8=210

Ans is $68

Than idk

tks

Ohhh ic!! Thanks!

Observation that the numbers in the pattern increases by an increasing rate for each term tells us that multiplication is involved rather than addition. We can start by asking what type of multiplication gives us those numbers in the pattern.

A = 9 and B = 36

Another way - gaps are +odd numbers starting w 3.

9 & 36

Each number is its own square that is 2×2 =4,3×3=9,4×4=16,5×5=25 and 6×6=36 and goes and so on...

Square of numbers from 1 to 6 so A is 3 x 3 and B 6 x6.

9 n 36, square of 3 and 6.

9 and 36

copy that!

The concept to apply here is that the sum of the exterior angles of a polygon is 360 deg. Using this knowledge, both parts of the question can be solved. Would you be able to carry on? 😊

Is this primary or sec 1?

This question primary 5 so..so difficult.

Ha. Not difficult lah Use sum of EXT angles = 360

Anupama Sabherwal Dhir, Sum of interior angles of triangles = 180 Sum of quadrilateral = 360 Sum of pentagon = 540 Draw your own conclusion

Melissa Battiato this answer for b (iii) thanks

The rest can do?

Oh sorry again Melissa Battiato this answer for A. Correct. Thanks

For 18(a), what you'll also need to know is (1) if an exterior angle is 120 deg, it's corresponding interior angle will be 60 deg (their sum is 180 deg) and (2) a heptagon has 7 sides.

For this question is answer correct. Thanks

Thanks for everyone help me solve this question.

Hmm... (a) is correct but (b)(ii) isn't correct because it is not a regular pentagon (pentagon with all sides equal) therefore the angles are not equal, which also means we can't take 360 to divide by 5 at the start.

Thanks Vei Li Soo:)

For (b)(ii): 90 + 2x + x + 60 + 3x + x = 360; 7x + 150 = 360; 7x = 210; x = 30.

Is this for Pri school?

Yes Lee Xun Yi

So hard

Thanks Xavier Sng.

You are most welcome. Regards

3/20 + 1.56 + 2.8 = 15/100 + 4.36 = 0.15 + 4.36 = 4.51 = 5 liters (round off)

Thk q