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Sav [38]
2 years ago
15

Find (h . g) (x) h (x) = 3x - 3 and g (x) = x2 + 3 A. 3x3 - 9 B. 3x3 - 3x2 + 9x C. 3x3 - 3x2 + 9x - 9 D. 3x3 + 3x2 + 9x - 9​

Mathematics
1 answer:
svp [43]2 years ago
8 0

Answer:

Step-by-step explanation:

(3x - 3)(x^2 + 3) = 3x^3 + 9x - 3x^2 - 9

3x^3 = 3x^2 + 9x - 9

answer is C

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What is the mode for the data set 67,73,78,71,80,74,79,76,75,70,72,​
dusya [7]

Answer:

There is no mode.

Step-by-step explanation:

Mode is a number that appears in a data set multiple times and their are no two numbers here.

3 0
3 years ago
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A company claims that 5% of its products will be defective. A simple random sample of 300 products contain 10 defective products
Radda [10]

Answer:

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Step-by-step explanation:

wateva u want it too be good luck

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3 years ago
A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 419 gram setting. It is
Dahasolnce [82]

Answer:

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given the mean of the Population(μ)  = 419 grams

The sample size 'n' =19

Given mean of the sample x⁻ = 412

Given variance of the sample S² = 784

                                                 S = √784 = 28

<u><em>Step(ii)</em></u>:-

<u><em>Null hypothesis: H₀</em></u>: There is no sufficient evidence to support the claim that the bags are underfilled.

<u><em>Alternative hypothesis: H₁:</em></u>

There is sufficient evidence to support the claim that the bags are underfilled.

Test statistic

                     t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }

                    t = \frac{412 -419}{\frac{28}{\sqrt{19} } }

                   t = -1.09

                 |t| = |-1.09|

<em>Degrees of freedom   ν = n-1 = 19-1 =18</em>

<em>t₀.₀₂₅ =  3.19</em>

<u><em>Final answer:</em></u><em>-</em>

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

                   

8 0
3 years ago
What is the surface area of the cylinder
Hitman42 [59]

Answer:

In terms of pi: 164.5pi cm squared

Substituting pi for 3.14: 516.53 cm squared

Step-by-step explanation:

3.5^2 = 12.25pi

12.25*2 = 24.5pi

7pi*20 = 140pi

140 + 24.5 = 164.5pi

164.5*3.14 = 516.53

5 0
2 years ago
What value of c makes the polynomial below a perfect square? 4x2 + 12x + c?
Tema [17]
This is what we know:4x^2 + 12x + c = (2x + k)^2
<span> 4x^2 + 12x + c = 4x^2 + 2kx + 2kx + k^2 
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