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RideAnS [48]
3 years ago
14

Ggggggggggggggg ggggggzggggggggggggggggggg

Mathematics
1 answer:
guapka [62]3 years ago
3 0

Answer:

TNX for da points

Step-by-step explanation:

ahhhhhhhhhhhhhhhhhh

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A quadrilateral has three angles measuring 60 º , 45 º, and 100 º . What is the measure of the fourth angle?
morpeh [17]

Answer:

155°

Step-by-step explanation:

The sum four angles is 360° so:

60°+45°+100°+x=360°

x = 360°-100°-45°-60°=155°

3 0
3 years ago
Answer Now!! Which expression can be used to find the area, in square cm, of this parallelogram?
Phoenix [80]
A, because parallelogram is the same as a rectangle, just tilted a bit. therefore the method is just base X height.
5 0
3 years ago
In a clinical trial of 268 subjects treated with a​ drug, 11​% of the subjects reported dizziness. The margin of error is plus o
Mariulka [41]

Answer:

\hat p =0.11 represent the proportion estimated of subjects reported with dizziness

n = 268 represent the random sample selected

\hat q = 1-\hat p = 1-0.11= 0.89 represent the proportion of subjects No reported with dizziness

E= 0.04 = 4% represent the margin of error for the confidence interval

\alpha= 1-0.90 =0.1 and this value represent the significance level of the test or the probability of error type I

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

The margin of error is given by:

ME= z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

Lower= 0.11-0.04 = 0.07

Upper= 0.11+0.04 = 0.15

And for this case we have the following info:

\hat p =0.11 represent the proportion estimated of subjects reported with dizziness

n = 268 represent the random sample selected

\hat q = 1-\hat p = 1-0.11= 0.89 represent the proportion of subjects No reported with dizziness

E= 0.04 = 4% represent the margin of error for the confidence interval

\alpha= 1-0.90 =0.1 and this value represent the significance level of the test or the probability of error type I

4 0
3 years ago
Please hurry i need this done now 15 points and brainliest
RideAnS [48]
The only solution is (-3/2, 4)
read my attachment

6 0
3 years ago
Read 2 more answers
Given the polynomial 6x3 + 4x2 − 6x − 4, what is the value of the constant 'k' in the factored form?
fomenos
1, when you factor you get 6x(x^2-1)+4(x^2-1)=(6x+4)(x-1)(x+1)
7 0
3 years ago
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