Complete question :
Michael took 12 tests in his math class. his lowest score was 78. his highest score was 98. on the 13th test, he earned a 64. put a check in the correct box to indicate whether the value of each statistic below for his test scores increased, decreased, or cannot be determined when the last score was added.
1. Standard deviation 11) Median 111) Mean
Answer:
Standard deviation - increased
Median - cannot be determined
Mean - decrease
Step-by-step explanation:
The standard deviation will increase because the new (13th) test score does not fall within the range (lowest and highest) of the 12 previous test scores and will hence further increase the variability of the s ires measured
The Median cannot be determined as we need the data for the scores in other to determine the middle value of the test scores.
The mean value will decrease further because, when a score (64) lower that the previously recorded least score (78) is recorded and then the sum is recalculated and average taken. This low new score will cause the new to decrease further than previously recorded.
The value of the mean decreases, the median cannot be predicted, and the value of the standard deviation increases.
What are statistics?Statistics is the study of collection, analysis, interpretation, and presentation of data or to discipline to collect, and summarise the data.
Michael to 12 tests in his math class.
His lowest test score was 78.
His highest test score was 98.
On the 13th Test, he earns a 64.
Then the mean will decrease because he earns a 64 on the 13th test. That is lower than his lowest score.
The standard deviation will increase because the gap between the mean and 64 will increase.
The Median cannot be determined as we need the data for the scores in other to determine the middle value of the test scores.
More about the statistics link is given below.
https://brainly.com/question/10951564
somone plzzzz help ASAPPPPP,BOTH OF THEM!!!!!!!!!!!1
5. Suppose a bunny's second hop is 8% higher than her first hop. Is the
statement below true or false? If the statement is false, correct it.
"The bunny's second hop is 108% of her first hop."
How are the slope formula and finding slope using "rise over run" related?
Answer:
they are the same thing
Step-by-step explanation:
Answer:
They are practically the same thing but if you want to get technical then they are related because A slope a measure of steepness. A line with a large slope, such as 25, is very steep. A line with a small slope, such as 1 /10 is very flat. So this means it will rise over run if that makes sense.
Hope this helps!
At a little-known vacation spot, taxi fares are a bargain. A -mile taxi ride takes minutes and costs $. You want to find the cost of a - taxi ride. What unit price do you need?
Answer:
The answer is 14
Step-by-step explanation:
Mike owes his friend $4. Each day, Mike earns $2.
(a) Write an equation that describes the situation in slope-intercept form and explain what the x- and yvalues represent.
(b) Graph the situation on a coordinate plane assuming the domain is all real numbers.
(c) What does the x-intercept mean? What does the y-intercept mean?
(d) Does the situation involve direct variation or not? If it does, justify your answer. If it does not, describe
how the situation would need to change in order for y to directly vary with x. Then, write a direct
variation equation based upon the changed situation.
please help!!! :(
Answer:
C
Step-by-step explanation:
A 1288.1 kg car is traveling at 24.1 m/s when the driver takes his foot off the gas pedal. It takes 4.4 s for the car to slow down to 20 m/s. How large is the net force slowing the car? Answer in units of N.
whats the answer to number 4?
please and thank you
Answer:
90+55+x
145+x=180*
=35
Which rule was used to translate the image?
Answer:
C
Step-by-step explanation:
I took the test
Approximately how many pounds of sand will it take to fill the sandbox. (URGENT)
Answer:
E
Step-by-step explanation:
becuase 16 divided by 0.5 is 32 then 32x42=1344
Sorry if im late or got it wrong :)
Answer:
B
Step-by-step explanation:
I check my answer many times
Complete the steps to derive the cofunction identity.
Answer:
See below
Step-by-step explanation:
In order to derivate the cofunction identity, we will use the difference identity for sine.
[tex]\boxed{\sin(\alpha-\beta ) =\sin(\alpha )\cos(\beta ) - \cos(\alpha )\sin(\beta ) }[/tex]
[tex]\sin \left(\dfrac{\pi}{2} - x\right) =\sin \left(\dfrac{\pi}{2}\right)\cos(x) -\cos\left(\dfrac{\pi}{2}\right) \sin(x)[/tex]
Once
[tex]\sin \left(\dfrac{\pi}{2}\right) = 1[/tex]
[tex]\cos\left(\dfrac{\pi}{2}\right) = 0[/tex]
[tex]\sin \left(\dfrac{\pi}{2} - x\right) =1 \cdot \cos(x) -0\cdot \sin(x)[/tex]
[tex]\sin \left(\dfrac{\pi}{2} - x\right) = \cos(x)[/tex]
Answer:
sin, cos, 1, 0, cos
Step-by-step explanation:
answer on edge
If f(x) = 3x + 2, then find the value of x such that f(x) = -4.
Answer:
See Below
Step-by-step explanation:
Solve by substituting
-4 = 3x + 2
-2 -2
-6 = 3x
3x/3 = -6/3
x = -2
Answer:
x = -2
Step-by-step explanation:
So we are given the function f(x) = 3x + 2 and we are asked to find the value of x that makes f(x) = -4. To do this, we can replace f(x) with -4 in the given function and solve for x.
-4 = 3x + 2
Swap sides.
3x + 2 = -4
Subtract 2 from both sides.
3x = -6
Divide both sides by 3.
x = -2
So we have found that x = -2 when f(x) = -4. This means that when x = -2, f(x) = -4.
I hope you find my answer and explanation to be helpful. Happy studying.
I will give brainliest to whoever can help!
Answer:
1)open 2)false 3)5
Step-by-step explanation:
Answer:
False
Open
5
Am I right??!
Solve each of these equations.
3y-4=6-2y
Answer:
y = 2
Step-by-step explanation:
3y + 2y = 5y
6 + 4 = 10
5y = 10
10/5 = 2
Suppose that 24 inches of wire costs 96 cents.
At the same rate, how much (in cents) will 47 inches of wire cost?
Answer:
Step-by-step explanation:
24inches = 96 cents
To find the cost of 1 inch, divide 96 cents by 24.
1 inch = 96/24 = 4 cents
Then to find the cost of 47 inches, multiply by 4.
47 inches = 47 x 4 = 188 cents.
20 comics for $5.00 seth buys 30 for $7.50 what is the sale price per comic
Given parameters:
20 comics costs $5
30 comics costs $7.50
Unknown:
Sale price per comic = ?
Solution
The sale price per comic is ;
= [tex]\frac{cost}{number of comics }[/tex]
= [tex]\frac{5}{20}[/tex]
= $0.25 per comic
The cost per comic is $0.25 per comic
Answer:
0.25
Step-by-step explanation:
Tap A fills 10/11 of a bottle in a minute. Tap B fills 3 4/5 times as many bottles as Tap A in a minute. Find the number of bottles Tap B fills in a minute.
Answer:
3 5/11
Step-by-step explanation:
Tap A's rate is (10/11) bottle/min.
Tap B's rate is 3 4/5 = 19/5 times that of tap A. Then tap B's rate is ...
(19/5)(10/11) bottles/min = 38/11 bottles/minute
Tap B fills 3 5/11 bottles in a minute.
9.3x 10^7 in standard notation
Answer: 93,000,000
Plz mark brainliest:)
Find the slope of the line passes through (1,4) and (9,1)
Answer:
-0.375
Step-by-step explanation:
Way one(the harder one):
Let the line which passes through (1,4) and (9,1) be f(x)=kx+b
Sub (1,4) and (9,1) in and we get [tex]\left \{ {{4=1k+b} \atop {1=9k+b}} \right.[/tex]
=> (9k+b)-(k+b)=1-4
8k=-3
k=-3/8 or -0.375
Therefore the slope of the line is -3/8 or -0.375
Way two(the easier one):
k= [tex]\frac{change in y}{change in x}[/tex] = [tex]\frac{1-4}{9-1}[/tex] = -[tex]\frac{3}{8}[/tex]
x/25 > 5
Answer must be simplified
Answer:
x > 125
Step-by-step explanation:
Step 1:
x ÷ 25 > 5 Equation
Step 2:
x > 5 × 25 Multiply 25 on both sides
Answer:
x > 125
Hope This Helps :)
A movie theater charges $6 admission and $2 per box of popcom. Write a variable
expression for the cost of you watching a movie and eating b boxes of popcorn
Answer:
Step-by-step explanation:
C = 2b + 6
can anyone help me with this question?
9514 1404 393
Answer:
E. 37
Step-by-step explanation:
Adjacent angles of a parallelogram are supplementary:
(4x -2)° +34° = 180°
4x = 148 . . . . . . . . . . . divide by °, subtract 32
x = 37 . . . . . . . . . . . . . divide by 4
i need help.pleaaseeeeeeeeeeIM BEGGING
Explain why the equation 6x+3=6x−5 has no solutions.
Answer:
Because 6X will cancel out, leaving you with no x. And 3 does not equal -5.
Step-by-step explanation:
6X + 3 = 6X -5
-6X -6X
3= -5 (not true)
Which of the capital letters G, I, J, L, or Q has at least one line of symmetry?
Letters that have lines of symmetry is : I
What is reflectional symmetry?Consider a plane. Let a design or shape on that plane. Now consider an axis. If we think of that axis as a mirror, and on the opposite side of that axis create the image of the shape, then if the shape's image looks exactly as the shape itself, then that shape is called to have a reflectional symmetry.
The lines of symmetry can be found as vertical or horizontal. Letters O, H, I. X have 2 lines of symmetry and other have 1.
At least one line of symmetry have letters:
A, B, C, D, E, H, I, M, O, T, U, V, W, X, Y ( you can choose one ).
The letter G has a no axis of symmetry and letter L has a horizontal axis of symmetry.
The letter I is the right one because it is a half and both look the same.
Learn more about symmetry here:
https://brainly.com/question/7783612
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Which of the following is a solution of the equation -5x + 2 = -13: answers: x=-9, x=75 x=3 x=-3
Answer:
x= 3
Step-by-step explanation:
1. -5(3) + 2 = -13
2. -15 + 2 = -13 A positive times a negative will always equal a negative
3. -13 = -13 Whenever you add anything to a negative number, the
number becomes smaller
Ex: -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, ...........
Although the number itself becomes smaller, its value
becomes bigger
Hope this helps.
Answer:
x= 3
Step-by-step explanation:
What is the minimum angle of rotation (in degrees) that will carry the six-sided star onto itself?
Answer:
The angle of rotation pf a six sided star, that will carry the six sided star onto itself is 60°
Step-by-step explanation:
The angle of rotation that will carry a six sided star onto itself is the angle between two adjacent lines of symmetry of the six sided star
Given that there are three lines of symmetry of the six sided star, and each line intersect with the next line at the center of the figure, the angle between two adjacent lines of symmetry = 360°/(2 × 3) = 60°
Therefore, the angle of rotation pf a six sided star, that will carry the six sided star onto itself = 60°.
The mode of the following data is 5 ?
0, 2, 2, 5, 2, 5, 0
Answer:
The answer is 2.
Step-by-step explanation:
2 appears three times while the others appear only twice
Plsase help me with this question
Which point represents the x-intercept of this exponential function?
Answer:
3
Step-by-step explanation:
because that is where the line (or curve) cuts the x axis
Answer:
Point (3, 0)
Identify a pair of alternate exterior angles.
a. 6 and 8
b. 2 and 7
c. 3 and 6
d. 3 and 2
Which number is both a perfect square and
perfect cube?
A) 9
B) 256
C) 64
D)512