4(x - 9) plz answer quickly

Mathematics

1 answer:

otez555 [7]3 years ago

5 0

Answer:

4x - 36

Step-by-step explanation:

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An agricultural scientist wanted to compare the effect of a new fertilizer to that of three older fertilizers—X, Y, and Z—on the

12345 [234]

Answer:

The scientist’s conclusion is not appropriate because it is based on a subjective appreciation (“significantly greater than”).

<em>How “greater” is “significantly greater”? </em>

A more objective and technical approach would be fixing a level of significance, let's say 0.05 or 0.01 for example, measuring the samples means and standard deviations and then proceeding with an appropriate hypothesis testing in order to see if the differences in means are really significant.

Step-by-step explanation:

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3 years ago

Read 2 more answers

Sin97°cos43°+cos97°sin43°

kirza4 [7]

I added a screenshot with the head of the question

Answer:
sin (140°)

Explanation:
Angle addition formulas are used to express the trigonometric function in terms of the sum/difference between two angles α and β
These rules are shown in the attached image.

Now, the given expression is::
sin97°cos43°+cos97°sin43°We have:
α = 97°
β = 43°

Comparing the given formula with the general formulas in the image, we would find that the given formula represents the sum of the sin of two angles.

Therefore:
sin97°cos43°+cos97°sin43°
= sin (97°+43°)
= sin (140°)

Hope this helps :)