1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Shalnov [3]
3 years ago
5

Get 20 points, Plz help me with this question, and give the right answer cause it's important

Mathematics
1 answer:
Aliun [14]3 years ago
5 0

Answer:

B, C, and D

Step-by-step explanation:

Just some simple maths, look at it like railroad tracks and act it out as such, with lines a and b being parallel. Angle 6 is 75, Angle 1 is 105

You might be interested in
In which way is a debit cat similar yo a check
katrin [286]
A debit card is similar to a check because they are both taking money out of a bank account under your name.
3 0
3 years ago
Read 2 more answers
A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than ex
Olenka [21]

Answer:

a

 The  90% confidence interval that  estimate the true proportion of students who receive financial aid is

     0.533  <  p <  0.64

b

   n = 1789

Step-by-step explanation:

Considering question a

From the question we are told that

      The sample size is  n = 200

      The number of student that receives financial aid is k = 118

Generally the sample proportion is  

      \^ p = \frac{k}{n}

=>   \^ p = \frac{118}{200}

=>   \^ p = 0.59

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.10

Generally from the normal distribution table the critical value  of \frac{\alpha }{2}  is  

   Z_{\frac{\alpha }{2} } =  1.645

Generally the margin of error is mathematically represented as  

     E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} }

 =>E =  1.645 * \sqrt{\frac{0.59 (1- 0.59)}{200} }

=>  E = 0.057

Generally 90% confidence interval is mathematically represented as  

      \^ p -E <  p <  \^ p +E

  =>  0.533  <  p <  0.64  

Considering question b

From the question we are told that

    The margin of error  is  E = 0.03

From the question we are told the confidence level is  99% , hence the level of significance is    

      \alpha = (100 - 99 ) \%

=>   \alpha = 0.01

Generally from the normal distribution table the critical value  of   is  

   Z_{\frac{\alpha }{2} } = 2.58

Generally the sample size is mathematically represented as      

        [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )

=>      n = [\frac{2.58}{0.03} ]^2 * 0.59 (1 - 0.59 )

=>      n = 1789

8 0
3 years ago
Slope 2 passing through 10,8
nlexa [21]
Use y=Mx+b    with x=10 and y=8
4 0
3 years ago
How can (25√)^2 be rewritten?
Nesterboy [21]

Answer:

25

Step-by-step explanation:

Sqrt 25 = 5

5^2 = 25

6 0
3 years ago
Read 2 more answers
Please help me with this geometry question <br><br> image attached
vodomira [7]

15/17. The value (ratio) of cos A is 15/17.

The trigonometric ratios of an acute angle are, basically, the sine, the cosine and the tangent. They are defined from an acute angle, α, of a right triangle, whose elements are the hypotenuse, the leg contiguous to the angle,  and the leg opposite the angle.

-The sine of the angle is the opposite leg divided by the hypotenuse.

-The cosine of the angle is the adjacent leg divided by the hypotenuse.

-The tangent of the angle is the opposite leg divided by the adjacent leg or, which is the same, the sine of the angle divided by the cosine of the angle.

cos A = adjacent leg/hypothenuse = BC/AC = 15/17

4 0
3 years ago
Other questions:
  • Morton and Lyndal invested together in a new venture. Lyndal invested $500 more than Morton. If they invested $5000 together, ho
    15·1 answer
  • Use numerals instead of words. If necessary, use decimals instead of fractions.Harry is making gift bags for a holiday party usi
    6·1 answer
  • Solve this system by elimination 12x-8y=20. -4x+3y=1
    7·1 answer
  • Which one please? Thanks for your help.
    15·1 answer
  • Can someone help me?
    13·1 answer
  • The following table shows the estimated populations and annual growth rates for four countries in the year 2000. Find the expect
    11·1 answer
  • PLS HELP ME !
    8·1 answer
  • What is the distance between (2, 5) and (2, -7)?
    15·1 answer
  • A house was sold for $64,900. If the selling price represents a 25% profit over the purchase price, how many dollars were in the
    12·1 answer
  • What expressions is equivalent to -19.2 - (-3.8)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!