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Mathematics

2 answers:

Zepler [3.9K]3 years ago

8 0

yellow would be B

orange would be D

I hope this helps!!!!

Finger [1]3 years ago

3 0

Answer:

a) point B

b) point D

Step-by-step explanation:

a) since there are 3 yellow sweets out of a total of ten, the probability of choosing a yellow sweet is 3/10 = 0.3 Therefore point B shows that number on the probability scale.

b) Since there are no orange sweets in the bag, the chances of a selecting sweet not being orange is ten out of ten (10/10 = 1 (for sure the sweet will not be orange). Therefore, point D shows such probability.

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inn [45]

I really hoped that helped you and i hope you have a good day. bye

6 0

3 years ago

5. Each year a tree farm grows 40 more trees than the number of trees grown the previous year. The farm sells all of their trees

Veronika [31]

Answer:

1710 trees up to 2016 (not including 2016)

2100 trees up to 2016 (including 2016)

Step-by-step explanation:

Given that

Farm started with 30 trees in 2007.

Every year 40 more trees than the previous year.

It is actually an Arithmetic Progression (AP) with

First term, a = 30 and

Common Difference, d = 40

The AP will look like:

30, 70, 110, 150, ....

We have to find the sum of this AP upto 9 terms and 10 terms:

9 terms sum will give us the total number of trees up to 2016 (not including 2016).

10 terms sum will give us the total number of trees up to 2016 (including 2016).

Formula for sum of 'n' terms of an AP:

$S_n=\dfrac{n}{2}(2a+(n-1)d)\\\Rightarrow S_9=\dfrac{9}{2}(2\times 30+(9-1)40)\\\Rightarrow S_9=\dfrac{9}{2}(60+320)\\\Rightarrow S_9=\dfrac{9}{2}(380)\\\Rightarrow S_9=9 \times 180 = 1710$