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melomori [17]
3 years ago
13

NEED ANSWER ASAP PLS WILL MARK BRAINLIEST

Mathematics
2 answers:
stepan [7]3 years ago
8 0

Answer:

x + 5/ x - 3

Step-by-step explanation:

expand 4x²+16 to get:

4x(x+4)

then multiply by the reciprocal to cancel the 4x(x+4) leaving you with x + 5/ x - 3

FromTheMoon [43]3 years ago
6 0

Answer:

the answer for this is option C 4x/x+5

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Vedmedyk [2.9K]

Answer:

Null Hypothesis, H_0 : \mu = 11.80

Alternate Hypothesis, H_A : \mu > 11.80

Step-by-step explanation:

We are given that you have a sample of 40 14-year-old children with antisocial tendencies and you are particularly interested in the emotion of surprise. The average 14-year-old has a score on the emotion recognition scale of 11.80.

Assume that scores on the emotion recognition scale are normally distributed.

Let \mu = <u><em>true average score on the emotion recognition scale</em></u>

So, Null Hypothesis, H_0 : \mu = 11.80

Alternate Hypothesis, H_A : \mu > 11.80

<u>This a right-tailed test</u> because the higher the score on this scale, the more strongly an emotion has to be displayed to be correctly identified. Therefore, higher scores indicate greater difficulty recognizing the emotion.

We can evaluate this hypothesis using One-sample t-test statistics or One-sample z-test statistics depends on the information given in the question.

If the z-test statistic is used, then the critical region at 0.05 level of significance will be an area more than the critical value of 1.645.

And if the t-test statistic is used, then the critical region at 0.05 level of significance with 39 degrees of freedom will be an area more than the critical value of 1.685.

4 0
3 years ago
Which equation could be used to find the measure of one acute angle in the right triangle shown below?
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Step-by-step explanation:

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3 years ago
Zack wants to make a profit of more than $300 for painting 4 identical rooms. The profit he makes is equal to the amount he is p
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Answer:

n-4(32.5) > 300;n > 430

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Simplify: 300 = 4n - 130

Add 130 to each side. 430 = 4n

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This tells us he must be paid $107.50 to make $300 exactly. Anything larger than $107.51 and up will make more than $300.

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Initial velocity of the plane is Vo = 0.
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S = Vo t + 0.5 a t^2
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t^2 = 3846.15
t = 62 s

the maximum velocity plan can reach within 62 s is Vt
Vt = Vo + a t
Vt = 0 + (1.3*62)
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Since 80.6 m/s is greater than 75 m/s, plane can use this runway to takeoff with required speed.
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Answer:

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