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3 years ago

What is the product? (-2x-9y^2) (-4x-3) URGENT

Mathematics

1 answer:

Murljashka [212]3 years ago

4 0

Answer:

8x^2 + 6x + 36xy^2 + 24y^2

Step-by-step explanation:

First, multiply the two terms inside the second set of parentheses by-2x; we get 8x^2 + 6x.

Next, multiply the same two terms by -9y^2; we get 36xy^2 + 24y^2.

Now add these products together:

8x^2 + 6x + 36xy^2 + 24y^2 This is the desired product.

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Since it is observed that I z I = 3.464 > 1.96 it is concluded that the null hypothesis is rejected.

Therefore we reject John's claim.

Here:

we can use 1 sample proportion test to check the claim of John

H₀ : p₀ = 0.4

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Test statistic is

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2 years ago

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nordsb [41]

Step-by-step explanation:

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