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vagabundo [1.1K]
3 years ago
6

Angles y and z are formed by two intersecting lines. The measure of z is 146°. What is measure of y?

Mathematics
1 answer:
AlladinOne [14]3 years ago
3 0

Answer: 34

Step-by-step explanation: A line is 180 degrees, so just subract the value that you already have from 180 and you'll have your answer.

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Hellen is using 3.508 grams of copper for her science experiment. How many kilograms of copper did Hellen use for her science ex
mash [69]

Answer:

.003508 kg of copper

Step-by-step explanation:

1000 grams = 1 kg

3.508 g/1000 g = .003508 kg

7 0
2 years ago
Suppose that at a state college, a random sample of 41 students is drawn, and each of the 41 students in the sample is asked to
ra1l [238]

Answer:

The  confidence interval for 90% confidence would be narrower than the 95% confidence

Step-by-step explanation:

From the question we are told that

  The  sample size is n = 41

   

For a 95% confidence the level of significance is  \alpha  = [100 - 95]\% =  0.05 and

the critical value  of  \frac{\alpha }{2}  is   Z_{\frac{\alpha }{2} } =Z_{\frac{0.05 }{2} }=  1.96

For a 90% confidence the level of significance is  \alpha  = [100 - 90]\% =  0.10 and

the critical value  of  \frac{\alpha }{2}  is   Z_{\frac{\alpha }{2} } =Z_{\frac{0.10 }{2} }=  1.645

So we see with decreasing confidence level the critical value  decrease

Now the margin of error is mathematically represented as

         E =  Z_{\frac{\alpha }{2} } *  \frac{s}{\sqrt{n} }

given that other values are constant and only Z_{\frac{\alpha }{2} } is varying we have that

         E\ \  \alpha \ \   Z_{\frac{\alpha }{2} }

Hence for  reducing confidence level the margin of error will be reducing

  The  confidence interval is mathematically represented as

        \= x  - E  <  \mu <  \= x  + E

Now looking at the above formula and information that we have deduced so far we can infer that as the confidence level reduces , the critical value  reduces, the margin of error  reduces and the confidence interval becomes narrower

3 0
3 years ago
The price of a pair of shoes is $45.90. The sales tax rate is 5%. How much sales tax do you need to pay?
Ne4ueva [31]
Multiply the price by the 5% by turning the percent into a decimal.
5% = 0.05
45.90 x 0.05 = $2.295
Which can be rounded to 2.30 if needed.
5 0
3 years ago
Read 2 more answers
5a-7=2a can someone also explain
Alona [7]
A = 7/3
quadratic formula
don’t know if that’s the method ur teacher wanted u to answer
8 0
3 years ago
Read 2 more answers
A dress which costs $180 is being sold at a discount of 10%. The amount of the discount is
ehidna [41]

Answer:

The discount is $18

Step-by-step explanation:

6 0
3 years ago
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