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
natita [175]
3 years ago
7

The test scores of 15 students are listed below. find the lower quartile (q1). 42 45 50 57 60 63 66 70 73 78 85 87 90 94 95

Mathematics
1 answer:
miskamm [114]3 years ago
3 0
From the test scores given:
<span> 42 45 50 57 60 63 66 70 73 78 85 87 90 94 95
splitting the values into 3 sets:
</span><span> (42 45 50 57 60 )(63 66 70 73 78)( 85 87 90 94 95)
from the first set we select the median:
</span>42 45 50 57 60
the median is 50
thus the first quartile will be 50

You might be interested in
To determine the number of trout in a lake, a conservationist catches 132 trout, tags them and throws them back
andrey2020 [161]

Answer:

boo

Step-by-step explanation:

6 0
2 years ago
To obtain an average (arithmetic mean) of exactly 2/3, what fraction must be added to 1/6, 1/2, and 1/3?
ollegr [7]

Answer:

D. 5/3

Step-by-step explanation:

\frac{1/6+1/2+1/3+x}{4} =2/3

1/6+1/2+1/3+x=8/3

x=8/3-1/6-1/2-1/3

x=8/3-1/6-3/6-2/6

x=8/3-6/6

x=16/6-6/6=10/6

simplified

x=5/3

Hope this helps

3 0
1 year ago
What is the solution of this equation -6+5x=6x-7
fomenos

Answer:

x = 1

Step-by-step explanation:

Our goal is to isolate x on one side. So:

-6 +5x = 6x - 7

-6 = x - 7

1 = x

Hope that helped!

5 0
3 years ago
14.
Readme [11.4K]

The domain is t=0 to t=3.2  and range is y = 0 to 57.125 feet.

<u>What are Domain and range of a Function?</u>

  • The range of values that we are permitted to enter into our function is known as the domain of a function.
  • The x values for a function like f make up this set (x). A function's range is the collection of values it can take as input.
  • After we enter an x value, the function outputs this sequence of values. The y values are those.
  • A function can be compared to a piece of equipment on an assembly line.
  • A few screws and nuts are located on one end of the assembly line, while a car is located on the other. The function is the device in the center. The domain is the screws and bolts that we insert into the machine. The car at the other can be thought of as the range.

Given function is : y = -16t^2 + 50t + 4

It hits the ground when y=0

0 = -16t^2 + 50t + 4

8t^2 -25t -2 = 0

t = 25/16 + (1/16)sqrt(625+64) = (25+26.25)/16 = 51.25/16 = 3.2 seconds

domain is t=0 to t=3.2  [3.2]

take the derivative and set it equal to zero to find maximum height

-32t +50 = 0

t = 50/32 = 25/16 = 1.5625 seconds

-16(25/16) + 50(25/16) + 4 = 34(25/16) + 64/16 = (17(25)+32)/8 = 57.125 = maximum height

range is y = 0 to 57.125 feet.   the discus goes from 4 feet to 57 1/8 feet and back down to 0 feet.

Know more about Domain and Range with the help of the given link:

brainly.com/question/20349151

#SPJ4

8 0
2 years ago
Solve 3x − x + 2 = 12.<br><br> −5<br> 4<br> 7<br> 5
Papessa [141]
Judging by the question I noticed that I can simplify the equation 3x-x+2=12 by one step.
The outcome of simplification should be 2x+2=12.

Next you must subtract 2 from both sides to isolate the x. The new equation should be 2x = 10.

Lastly you must divide both sides by 2, the answer you should get is x=5, D.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Help with 1-5
    13·1 answer
  • Jamal wants to know how much he will be required to put down on a house that will cost $150,000 if the lender requires a 15 perc
    7·1 answer
  • Please answer this correctly
    7·2 answers
  • 3x + 13 = 3(x + 6) + 1
    5·1 answer
  • - write 30% as a rate per 100.
    13·1 answer
  • What is the period, in seconds, of the simple harmonic motion described by the equation x = 3sin(4πt)?
    6·2 answers
  • The temperature in Frederick decreased 8
    7·1 answer
  • 5/9 + 5 4/9 lowest terms
    9·2 answers
  • Find the area of the figure
    7·1 answer
  • Find a function whose graph is a parabola with vertex (4,-5) and that passes through the point (2, 3).
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!