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2 years ago

What's 1 and 2/3 times 1 and 1/3?

Mathematics

2 answers:

UNO [17]2 years ago

7 0

Answer:

2 2/9

Step-by-step explanation:

kari74 [83]2 years ago

6 0

<span>1 and 2/3 time 1 and 1/3 is 2.22222222222 which rounds to 2.</span>

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If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date

slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ is the two-tailed z-value for significance level of $(\alpha)$

p = prior estimation of the proportion

E = Margin of error.

If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2$

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Margin of error : E= 0.05

Confidence level = 90%

Significance level $\alpha=1-0.90=0.10$

Using z-value table , Two-tailed z-value for significance level of $0.10$

$z_{\alpha/2}=1.645$

Then, the required sample size would be :

$n=0.25(\dfrac{1.645}{0.05})^2$

Simplify,

$n=270.6025\approx271$

Hence, the required minimum sample size =271

3 0

3 years ago

Value of x? Help lol

sashaice [31]

Answer:

128

Step-by-step explanation:

well x be 128 cause their vertical angles

4 0

3 years ago

Read 2 more answers

On her way home, Carrie must drive up a hill that has an incline of . If CarrieÍs vehicle stops at an elevation 0.25 miles highe

anzhelika [568]

She would drive up the hill C.2.87.The ovesiouse answer would have been c because if you do the math then it would give you 2.87.

8 0

3 years ago

Read 2 more answers

Multiple choice please answer please

tankabanditka [31]

Answer:

B. $cos^{-1} \bigg(\frac{4}{5}\bigg)$

Step-by-step explanation:

$\because \cos \angle B = \bigg(\frac{4}{5}\bigg)\\\\\therefore \angle B =cos^{-1} \bigg(\frac{4}{5}\bigg)\\$

3 0

3 years ago

Can u explain me this question pls

IgorC [24]

Sorry I forgot about that

6 0

3 years ago