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3 years ago

14

Rani rai sold two typewriters at Rs 1980 each . if the gained 10% in one and lost 10% in other ' find the gain or loss percentag

e she made.

1 answer:

PilotLPTM [1.2K]3 years ago

8 0

Answer:

sorry to hear about this friends and respective people and teachers who are in a position

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An Article a Florida newspaper reported on the topics that teenagers most want to discuss with their parents. The findings, the

Sergio039 [100]

Answer:

The estimate is $P__{hat}} \pm E = 0.37 \pm 0.0348$

Step-by-step explanation:

From the question we are told that

The sample size is n = 522

The sample proportion of students would like to talk about school is $\r p__{hat}} = 0.37$

Given that the confidence level is 90 % then the level of significance can be mathematically evaluated as

$\alpha = 100 - 90$

$\alpha = 10\%$

$\alpha = 0.10$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table, the value is

$Z_{\frac{\alpha }{2} } =Z_{\frac{0.10}{2} } = 1.645$

Generally the margin of error can be mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \sqrt{\frac{\r P_{hat}(1- \r P_{hat} )}{n } }$

=> $E = 1.645 * \sqrt{\frac{0.37 (1- 0.37 )}{522 } }$

=> $E = 0.0348$

Generally the estimate the proportion of all teenagers who want more family discussions about school at 90% confidence level is

$P__{hat}} \pm E$

substituting values

$0.37 \pm 0.0348$

5 0

3 years ago

1. What is the next term of the arithmetic sequence 6, 10, 14, 18

givi [52]

It’s 22 (add 6 after every term)

8 0

3 years ago

Read 2 more answers

I need help please .

Simora [160]

Answer:

the answer is 1 because kyut ko hahaha

8 0

3 years ago

What's 4+ -1 1/3 as a fraction in simplest form

Ivenika [448]

4 + -1 1/3

Turn 4 into an improper fraction.

4/4 is equal to 12/3. We want both 4 and 1 1/3 to have the same denominator so that they could be subtracted from each other.

New question :

12/3 + - 1 1/3

Turn {-1 1/3} into an improper fraction.

(3 × 1) + 1 = 4/3

So, -1 1/3 = -4/3

Our new question :

12/3 + - 4/3

Simplify.

12/3 - 4/3 = 8/3

Turn into a mixed number.

2 2/3

~Hope I helped!~

7 0

3 years ago

How do i solve 8y - 3 = 6y + 17

MArishka [77]

8y-3=6y+17
2y=20
y=10
The answer for y is 10.

5 0

3 years ago