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
katovenus [111]
3 years ago
14

Plz help on homework

Mathematics
1 answer:
8_murik_8 [283]3 years ago
4 0

Answer:

see attached

Step-by-step explanation:

As you know, dividing by a fraction is the same as multiplying by that fraction's inverse (or reciprocal). Any whole number is equivalent to the fraction that is that whole number divided by 1. (For example, 4 = 4/1.)

You might be interested in
. Sara teaches aerobics classes as a part-time job. The amount of money she earned is shown in the table below. Based on the inf
nikitadnepr [17]

Answer:

She should earn 225 dollars.

Step-by-step explanation:

I know this because 50 ÷ 4 = 12.5 and 12.5 × 18 = 225.

3 0
2 years ago
Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. Whe
podryga [215]

Answer:

The value  is  n = 384

The correct option is a

Step-by-step explanation:

From the question we are told that

   The margin of error is  E =  0.05

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of   is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally since the sample proportion is not given we will assume it to be

      \^ p = 0.5

Generally the sample size is mathematically represented as  

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

=>   n = [\frac{ 1.96 }{0.05} ]^2 *0.5 (1 - 0.5)

=>   n = 384

Generally the margin of error is mathematically represented as  

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

Generally if the level of confidence increases,  the critical value of  \frac{\alpha }{2}  increase and from the equation for margin of error we see the the critical  value varies directly with the margin of error , hence the margin of error  will increase also  

So  If the confidence level is increased, then the sample size would need to increase because a higher level of confidence increases the margin of error.

8 0
3 years ago
In the xy-plane, the point (4,4) lies on the graph of the function f(x)-2x2-bx + 12. What is the value of b?
nikdorinn [45]
Simply substitute the point into the given equation; as there is one variable, you only need one point and so one is given. When done so, you shall get b=4

5 0
3 years ago
What is the bisector of RS
Inessa05 [86]

Step-by-step explanation: A line, ray, or line segment (referred to as segment) that is perpendicular to a given segment at its midpoint is called a perpendicular bisector. ... In the diagram above, RS is the perpendicular bisector of PQ, since RS is perpendicular to PQ and PS≅QS. Additionally, since PS≅QS, point S is the midpoint of PQ.

8 0
2 years ago
CAN SOMEONE HELP ME PLEASE ASAP!
mariarad [96]

Answer:

880 feet per hour.

Step-by-step explanation:

26 inches to foot = 2.2

9 seconds to hour =  0.0025

2.2/0.0025 = 880 feet per hour.

If you need any more help please let me know and i will make a video for you.

4 0
3 years ago
Other questions:
  • Henry is an agent for movie stars. He earns 10% of his clients' salaries. If he made $72,000 last year, how much did his clients
    6·2 answers
  • Which of the following functions has the steepest slope?
    12·2 answers
  • The median number of points scored by 9 players in a basketball game is 12. The range of the numbers of points scored by the sam
    6·1 answer
  • Determine whether or not f is a conservative vector field. if it is, find a function f such that f = ∇f. if it is not, enter non
    7·1 answer
  • Write as a decimal. Be sure to put the zero before the decimal point. 17.9%
    9·1 answer
  • Which description describes this equation?<br> 7x-2=33
    5·1 answer
  • What is the surface area?<br><br> 7 ft<br> 7 ft<br> 1 ft<br><br> square feet
    9·2 answers
  • -24&lt;41<br>Adevarat sau fals?​
    11·2 answers
  • Lana bought a sports car for $75,700. If the value of her car decreases 4.3% annually.
    12·1 answer
  • Make a proportion by pairing the ratios in the table below<br>​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!