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Paraphin [41]
3 years ago
11

I need help tryna understand how to do this

Mathematics
1 answer:
Vadim26 [7]3 years ago
8 0

Answer:

Use the formula (b/2)^2

in order to create a new term. Solve for

x

by using this term to complete the square.

x = 3± 4i

Step-by-step explanation:

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A random sample of 38 wheel chair users were asked whether they preferred cushion type A or B, and 28 of them preferred type A w
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Answer:

The statement that cushion A is twice as popular as cushion B cannot be verified

Step-by-step explanation:

From the question we are told that:

Sample size n=38

Type a size A X_a=28

Type a size B X_b=10  

Generally the probability of choosing cushion A P(a) is mathematically given by

P(a)=\frac{28}{38}

P(a)=0.73

Generally the equation for A to be twice as popular as B is mathematically given by

P(b)+2P(b)=3P

Therefore Hypothesis

Null H_0: p \leq \frac{2P}{3P} \\Altenative H_A:p>\frac{2P}{3P}

Generally the equation normal approx of p value is mathematically given by

z=\frac{x-np_0-0.5}{\sqrt{np_0(1-p_0)} }

z=\frac{28-(38*2/3)_0-0.5}{\sqrt{38*2/3*1/3} }

z=0.75

Therefore from distribution table

Pvalue=1-\theta (0.75)

Pvalue=0.227

Therefore there is no sufficient evidence to disagree with  the Null hypothesis H_0

Therefore the statement that cushion A is twice as popular as cushion B cannot be verified

7 0
3 years ago
Determine whether the data described below are qualitative or quantitative and explain why.
ddd [48]
The correct answer is choice A. Qualitative data is data that is collected based on a quality or a characteristic. These type of data will not involve numbers or measurements, but descriptive words.
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3 years ago
Given ABC is similar to DEF and BC = 8, what is the value of EF?
lbvjy [14]

In similar triangles ratios of corresponding sides are constant, so

|AB|/|DE| = |BC|/|EF|

5/10 = 8/|EF|

|EF| = (8*10)/5 = 16

|EF| = 16

6 0
3 years ago
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Answer:

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Step-by-step explanation:

As per the statement:

There are 486 hamsters at a private showing of a new documentary about humans.

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It is also given that there are 12 seats in each row.

then;

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Therefore, the best estimate the rows will hamsters fill is 40 rows.

7 0
3 years ago
Which expression is equivalent to 8-(-8)
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What are the answer choices
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4 years ago
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