You can remove the first plus sign to give:
-1.3 -4.9 [ because + x - = - ]
and by the same rule you can remove the the second plus sign to give
-1.3 -4.9 - 2.6
That means option b is out because it is positive.
straight away we can see that option D. equals the result, so it is in the running, so now can we eliminate c and a?
we can eliminate a because the minus ign outside the bracket multiplied by -4.9 inside the bracket produces + 4.9, which is not the answer, so that only leaves c.
once again, a plus sign outside the bracket does not produce -4.9 when muliplied by 4.9 inside the bracket inside option c, so we can eliminate option c.

~
Answer (D)

6 0

3 years ago

Josh practice gymnastics each day after school the data shows the lengths of time josh practiced gymnastics for two weeks

stepladder [879]

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer

Make a tally table and line plot to show the data.

Time (in hours) Tally Total

$\frac{1}{4}$ // 2

$\frac{1}{2}$ / 1

$\frac{3}{4}$ /// 3

1 //// 4

Hope it will find you well.

5 0

3 years ago

Students at an agricultural station conducted a study to compare geneticallymodified (GM) corn with regular corn. Each of 33 plo

OlgaM077 [116]

Answer:

Step-by-step explanation:

The given data is represented in the attachment.

a) Explain why yields from one type of corn are not independent of the yields from the other type of corn.

Yields from one type of corn are not independent of the yields from the other type of corn because, as the corns are planted in two similar plots, they could compete during watering process, even the amount of nutrients shared and the type of air. This means one corn may get more nutrients than the other. Therefore, they are not independent (they are dependent).

b) Based on the summary statistics, GM is expected to more likely obtain yield greater than 123, because 123 is greater than mean for regular corn but less than mean for GM corn.

Thus,

P(yield>123|GM)>0.5; and P(yield>123|Regular)<0.5

6 0

4 years ago