So, Barry bought 4 packs of snowflakes and each pack contains 20 stickers. Therefore, we do 4 x 20, which is 80, so he has 80 snowflake stickers. Then, he also bought 2 packs of dinosaurs, and each pack of dinosaur stickers has 17 stickers. So, we need to do 2 x 17 which is 34, so he has 34 dinosaurs stickers. In total, Barry has 114 stickers, now we need to remember how many stickers in total he has for later. Let's move on to Amy. Amy bought 3 packs of snowflakes, and because each pack contains 20 stickers, we do 3 x 20 which equals 60. Therefore, Amy has 60 snowflake stickers. Then, Amy bought 3 packs of rose stickers, so because each pack of rose stickers has 25 stickers, we do 3 x 25 which is 75. So, Amy has 135 stickers in total. Now let's add up both of their totals to see if we have 300 stickers. So, if we add 135 and 114 we get 249, we do not have enough stickers. Let's find out how many stickers they still need to buy. Now, we do 300 (Because 300 is the amount we need to have) minus 249 (Because that is the amount we have) which equals 51. So, they need to buy 51 more stickers because that is what they are missing from the total they need. Therefore, the answer is A. 51.
Answer:
Angles in a triangles add up to 180°
Respectively 1 : 2 : 3 is going to be 1 x , 2 x and 3 x so,
1 x + 2 x + 3 x = 180°
⇒ Simplify
6 x = 180°
⇒ Divide by 6 on both sides to isolate x
x = 30°
Since the ratio was 1 x : 2 x : 3 x and x is 30°,
30 : 60 : 90
And since there is a 90° angle, it is a right - angled triangle
Answer:
90
Step-by-step explanation:
If you add all those together than you get 89.6 which equals to 90 if estimating. no need for an explanation
Only add those numbers up and round
Answer:
12
Step-by-step explanation:
1 * 12 = 12
3 * 12 = 36
5 * 12 = 60
10 * 12 = 120
Answer:
2110 cm³
Step-by-step explanation:
Volume = V1 + V2,
Where V1 is the volume of the pyramid, and V2 is the volume of half cylinder
V1 = ⅓×(Base area)×height
V1 = ⅓×(12.6×21.5)×8.5 = 767.55
V2 = ½×(pi×r²×h)
r = 12.6÷2 = 6.3
V2 = ½×(pi×6.3²×21.5) = 1340.415
Volume = V1 + V2
= 767.55 + 1340.415
= 2107.965
= 2110 cm³ (3 sf)
