2 years ago

Brainliest for correct answer

Mathematics

1 answer:

Finger [1]2 years ago

3 0

D hope this helps xx

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Factor the expression completely:<br> x⁴ + 27x

il63 [147K]

I dont know if this is right but here u goo

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Which statement can be inferred from the following lines? A study revealed that most autistic children have under-developed moto

drek231 [11]

It can be inferred that the siblings of the autistic children in the study do not have autism.

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9x^2 - 4y - a <br> evaluate the expression given<br> x = -2, y = 3, a = -4

Tema [17]

Answer:

-44

Step-by-step explanation:

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2 years ago

Confidence Interval Application Many people feel that the drying of pavement marking paint is much too slow. You spend several d

djyliett [7]

Answer:

The sample size is $n =33$

Step-by-step explanation:

From the question we are told that

The margin of error is E = 1.5 seconds

The standard deviation is s = 4 seconds

Given that the confidence level is 97% then the level of significance is mathematically represented as

$\alpha =( 100 -97)\%$

=> $\alpha = 0.03$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 2.17$

Generally the sample size is mathematically represented as

$n =[ \frac{Z_{\frac{\sigma }{2 } } * \sigma }{E} ]^2$

=> $n =[ \frac{2.17 * 4 }{1.5} ]^2$

=> $n =33$

7 0

2 years ago

PLEASE HELP ASAAPPP PLEASEE

saw5 [17]

Answer:

m∠1 = 81

m∠2 = 99

Step-by-step explanation:

The angles are supplemaentary and therefor sum to 180

3x + (x + 72) = 180

4x + 72 = 180

4x = 108

x = 27

m∠1 = 3x

m∠1 = 27(3)

m∠1 = 81

m∠2 = x + 72

m∠2 = 27 + 72

m∠2 = 99

5 0

2 years ago