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Reil [10]
2 years ago
10

X²=9 determine if x belongs to Q or belongs to Q dash​

Mathematics
1 answer:
Elis [28]2 years ago
4 0

x = 3 is the answer can you pls add me brainliest answer

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A garment dealer buys for Rs.10,000 and spend Rs.800 on freight. He seeks the entire stock for Rs.12,960. Find his loss/profit p
jeyben [28]

Answer:

Profit percentage=20\%.

Step-by-step explanation:

Given: A garment dealer buys goods for  \text{Rs.}\:10,000 and spend \text{Rs.}\:800 on freight. He seeks the entire stock for \text{Rs.}\:12,960.

To find:  His loss/profit percentage.

Solution:

We have,

Cost price of goods =\text{Rs.}\:10,000

Spent on freight =\text{Rs.}\:800

So, total cost of goods=\text{Rs.}\:10000+\text{Rs.}\:800=\text{Rs.}\:10,800

Selling price of entire stock =\text{Rs.}\: 12,960.

Now, Profit =\text{Selling price}-\text{Cost price}

So, Profit =\text{Rs.}\:12, 960-\text{Rs.}\:10,800=\text{Rs.}\:2160

Now,

\text{Profit\:\%}= \frac{\text{Profit}}{\text{Cost price}} \times 100\%

\implies\text{Profit\:\%}= \frac{2160}{\text{10,800}} \times 100\%

\implies\text{Profit\:\%}= \frac{2160}{108}\%

\implies\text{Profit\:\%}= 20\%

Hence, profit percentage =20\%.

8 0
3 years ago
What two formulas are necessary to find the area of a segment of a circle? i will name brainliest!!!!!!!
NeTakaya
The necessary formulas to get the area of a circle’s segment are the area of the circle’s sector and the triangle it is bounded by. 

Hence the formula for the segment’s area is:Area of Segment = Area of sector – area of the triangle.

The formula of the area of a circle’s sector is:Area of Sector = \frac{central-angle}{2} x (radius of circle)²

While the formula for the area of a triangle is:Area of Triangle = \frac{1}{2} x base of triangle x height of triangle
5 0
3 years ago
Read 2 more answers
In a study of cell phone usage and brain hemispheric​ dominance, an Internet survey was​ e-mailed to 6965 subjects randomly sele
vladimir1956 [14]

The hypothesis test shows that we reject the null hypothesis and there is sufficient evidence to support the claim that the return rate is less than 20%

<h3>What is the claim that the return rate is less than 20% by using a statistical hypothesis method?</h3>

The claim that the return rate is less than 20% is p < 0.2. From the given information, we can compute our null hypothesis and alternative hypothesis as:

\mathbf{H_o :p =0.2}

\mathbf{H_i:p < 0.2}

Given that:
Sample size (n) = 6965

Sample proportion \mathbf{\hat p = \dfrac{x}{n} = \dfrac{1302}{6965} \sim0.1869}

The test statistics for this data can be computed as:

\mathbf{z = \dfrac{\hat p - p}{\sqrt{\dfrac{p(1-p)}{n}}}}

\mathbf{z = \dfrac{0.1869 -0.2}{\sqrt{\dfrac{0.2(1-0.2)}{6965}}}}

\mathbf{z = \dfrac{-0.0131}{0.0047929}}

z = -2.73

From the hypothesis testing, since the p < alternative hypothesis, then our test is a left-tailed test(one-tailed.

Hence, the p-value for the test statistics can be computed as:

P-value = P(Z ≤ z)

P-value = P(Z ≤ - 2.73)

By using the Excel function =NORMDIST (-2.73)

P-value = 0.00317

P-value ≅ 0.003

Therefore, we can conclude that since P-value is less than the significance level at ∝ = 0.01, we reject the null hypothesis and there is sufficient evidence to support the claim that the return rate is less than 20%

Learn more about hypothesis testing here:

brainly.com/question/15980493

#SPJ1

3 0
1 year ago
Given that the function g is defined by the rule g(x)=3-2x,determine the following
Illusion [34]

Answer:

The value of g(a) is:

  • g(a) = 3 - 2a

Step-by-step explanation:

Given

As the function g(x) is given by

g(x)=3-2x

To determine

g(a) = ?

In order to determine g(a),

substitute x = a in the function g(x) = 3 - 2x

g(x) = 3 - 2x

g(a) = 3 - 2(a)

g(a) = 3 - 2a

Therefore, the value of g(a) is:

  • g(a) = 3 - 2a
6 0
2 years ago
HELP!!!!!!!!!!! !!!!!!!!!!
Sonja [21]

Answer:

second one is 3, the last one is 4560

Step-by-step explanation:

5 0
2 years ago
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