Some people took part in a game. The frequency shows information about their scores.
Score:Frequency
1-7:19
8-10:14
11-15:15
16-20:20
21-35:10
36-50:13
Estimate the mean.
Give your answer rounded to 2 decimal places.
Answer:
The mean = 17.54
Step-by-step explanation:
Form a table as below;
Interval Frequency{f} Midpoint of frequency{x} fx
1-7 19 4 76
8-10 14 9 126
11-15 15 13 195
16-20 20 18 360
21-35 10 28 280
36-50 13 43 559
Sum 91 1596
The mean of grouped data = Sum of { Interval Midpoint * Frequency } /Sum of frequency
The mean= 1596 / 91
The mean = 17.54
Is Point M the midpoint of AB? Select Yes or No for each statement.
Answer:
A). Yes
B). Yes
C). No
D). Yes
Step-by-step explanation:
Coordinates of the midpoint of a segment joining two points [tex](x_1, y_1)[/tex] and [tex](x_2,y_2)[/tex] are given by [tex](\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex].
A). If the points are A(1, 2) and B(3, 4)
Coordinates of the midpoint M → [tex](\frac{1+3}{2},\frac{2+4}{2})[/tex]
M → (2, 3)
Yes.
B). Extreme points of segment AB are A(0, 8) and B(10, -1)
Coordinates of the midpoint will be,
M → [tex](\frac{0+10}{2}, \frac{8-1}{2})[/tex]
M → (5, 3.5)
Yes
C). Extreme points of segment AB are A(-7, -5) and B(6, 4)
Coordinates of the midpoint will be,
M → [tex](\frac{-7+6}{2}, \frac{-5+4}{2})[/tex]
M → (-0.5, -0.5)
NO
D). Extreme points of segment AB are A(4, -2) and B(6, -8)
Coordinates of the midpoint will be,
M → [tex](\frac{4+6}{2}, \frac{-2-8}{2})[/tex]
M → (5, -5)
Yes
find the measure of the angle(s).
Answer:
x=10
Step-by-step explanation:
Mrs. K has 23 students in her class. Mr. Curran has 19 in his class.
How many more students does Mrs. K have than Mr. Curran?
Answer:
4 more students
Step-by-step explanation:
To find how many more students Mrs. K has, subtract 19 from 23:
23 - 19
= 4
So, Mrs. K has 4 more students than Mr. Curran
Show work please!!!!!!
Help me plz!!!! And I’ll give brainliest! Which sequence of transformations do not result in congruent figures?
Rotation about the origins, translation up 2
Reflection over the y-axis, translation down 7
Rotation about the origin, reflection over the x-axis
Reflection over the X-axis, dilation with a factor of 2
Answer:
Reflection over the X-axis, dilation with a factor of 2
Step-by-step explanation:
Dilation changes the size of the figure, therefore making it not congruent with the original figure.
3. A uniform border on a framed photograph has the same area as the photograph. What are the outside dimensions of the border if the dimensions of the photograph are 25 cm by 30 cm? You must use partial factoring to solve this question.
PLEASE SHOW WORK
Answer:
hd
Step-by-step explanation:
NO WORK
The vertices of ABC are A (-5, 5), B (-2,5), C(-2,3).
1. Graph the figure ABC.
2, Translate each vertex 3 units down and 4 units to left.
3. Draw and label the vertices A'B'C.
Answer:
It will be in the attachment below.
Step-by-step explanation:
Translating a vertex 3 units down and 4 units to the left means that the x coordinate is 4 less than before and the y is 3 less. So, subtract 4 from -5 to get -9; from -2 (twice) to get -6 (twice), and subtract 3 from 5 (twice) to get 2 (twice); from 3 to get 0. So, the new coordinates are (-9, 2), (-6, 2), and (-6, 0). The original shape is in red, and the translated shape is blue.
Helppppp pweaseeeee im confused :(
. Which inequality is shown in the graph below? O 1 ys-X+ 1 2 ys-x+1 8 O 1 y-X+1 2 yz x+1 4 2 -8-6420 -2 2 4 6 8 1 y> X+1 2 o *****1 -6 -8 O 1 y =X+ 1 2 y
Answer:
the answer is the last one 1 -6 -8 O 1 y =X 1 2 y
Step-by-step explanation:
The feasible region of the result is defined by the system of inequalities.
Correct response:
The system of inequalities shown in the graph is given by the option B.
B. y ≤ x + 1
y ≤ x² - 3·x
What is inequality?An inequality is a relation which makes a non-equal comparison between two numbers or mathematical expressions.
here, we have,
Methods used to find the system of inequalities
Please find attached the possible graph of the inequality
The possible graph obtained from a similar question has a straight line portion and a quadratic portion.
Points on the straight line are; (0, 1), (3, 4), and (5, 6)
Therefore;
Equation of the line is; y - 1 = 1 × x
Therefore;
y = x + 1
The shaded region is below the line which gives;
y ≤ x + 1
Points on the quadratic graph are; (0, 0), (4, 4), and (2, -2).
The general form of a quadratic equation is; y = a·x² + b·x + c
Therefore, we have;
0 = a × 0 + b × 0 + c
Which gives;
c = 0
4 = a × 4² + b × 4 = 16·a + 4·b
-2 = a × 2² + b × 2 = 4·a + 2·b
4 = 16·a + 4·b...(1)
-2 = 4·a + 2·b...(2)
Multiplying equation (2) by 2 and subtracting from equation (1) gives;
2 × -2 = 2 × (4·a + 2·b) = 8·a + 4·b
-4 = 8·a + 4·b
4 - (-4) = 16·a + 4·b - (8·a + 4·b) = 8·a
8 = 8·a
a = 1
-2 = 4 × 1 + 2·b
2·b = -2 - 4 = -6
Which gives;
y = 1·x² - 3·x = x² - 3·x
The line is a solid line and shaded region is the region under the graph which gives;
y ≤ x² - 3·x
Therefore;
The inequalities in the graph are given by option B.
B. y ≤ x + 1
y ≤ x² - 3·x
Learn more about graph of inequalities here:
brainly.com/question/6749279
#SPJ7
What is the nth term rule of the linear sequence below?
7, 9, 11, 13, 15, ...
Tn = 0
Answer:
the best number is 17 cuz the sequence is to add 2 sooo it's 17 then 19
Answer:
2n+5
Step-by-step explanation:
Sequence = 7,9,11,13,15 ....
tn = a + (n-1)d where a is first number, and d is common difference
tn = 7 + (n-1)2
= 7 + 2n - 2
= 2n+5
therefore tn (or nth term rule) = 2n+5
Clara lends half her collection of formal attires to her sister, Susan. Clara then buys four more attires now, how many attires did Clara had initially.
Answer:
let the numbet of formal attires with Clara be X
Clara lended susan 1/2 = X/2
Clara buys 4 = X/2 +4
Answer = X/2 + 4
( as the number of formal attires originakly with Clara is not specified)
Write the slope-intercept form of an equation of the line that passes through the point (5, -5) and is parallel to the graph of the equation 3x + y = -2.
Answer:
[tex]y=-3x+10[/tex]
Step-by-step explanation:
Parallel equations have same slope
Therefore slope of 3x + y = -2 is same as slope of other equation.
Slope of 3x + y = -2 is
m=-3
Now we have write equation having slope -3 and passing through point (5, -5)
[tex](y+5)=-3(x-5)[/tex]
[tex]y=-3x+10[/tex]
Milo has 2 hours of free time. He spends 2/4 of an hour with his dog he spends 3/4 of an drawing. What fraction of an hour dose he has left
Answer:
3/4 time left
Step-by-step explanation:
A scientist changes the temperature of a solution at a rate of
-8°C per minute. How many minutes will it take for the
solution's temperature to change from 0°C to -88°C?
hurry up
Answer:
11 minutes
Step-by-step explanation:
I may be missing something. This is too simple.
88 degree change at 8 degrees per minute = 11 minutes.
Yes its a function
No it’s not a function
Which one is correct no guesses
Answer:
Yes
Step-by-step explanation:
Each input has one output and no input has the same output
Figure ABCD is a rhombus.What is the value of x? 13 14 26 28
Answer:
The answer is 13
Step-by-step explanation:
Took the test on Edge
Answer:
x=13 :)
I took the quiz
write an equation in slope- intercept form (y=mx+b) slope:0 y-intercept: 9
0.98 -1.9h
g= 17, h = 2
0.9g - 1.9h =
Answer:
11.5
Step-by-step explanation:
Answer:
11.5
Step-by-step explanation:
0.9(17) - 1.9(2) = and then solve
I need help with both of them I'm confused...
Answer:
8) d
9) a
Step-by-step explanation:
8) C = d ·π
36 = d ·π
36 / π = d
9) 4π is the difference, which is 12.56
a man bought a camera for rupees 460 and sold it at 5% profit find the selling price of the camera
Answer:
profit is 23 selling price is $483
Step-by-step explanation:
Cp of Camera=Rs.460
profit= 5%
so profit =5% of 460=(5*460)/100=Rs.23
then selling prices of camera= cp of camera + profit Rs=$460+23=483 hope this helps
The function f(x) is a quadratic function and the zeros of f(x) are -2 and 6. Assume the leading coefficient of f(x) is 1. Write the equation of the quadratic polynomial in standard form.
Step-by-step explanation:
Since the zeroes of f(x) are -2 and 6,
(x + 2) and (x - 6) are factors of f(x).
=> f(x) = (x + 2)(x - 6) = x² - 4x - 12.
Answer:
The function f(x) is a quadratic function and the zeros of f(x) are -2 and 6. Assume the leading coefficient of f(x) is 1.
(x+2) and (x-6) are the factors of f(x)
[tex]f(x) = (x + 2)(x - 6) \\ = {x}^{2} - 6x + 2x - 12 \\ = \boxed{{x}^{2} - 4x - 12}[/tex]
(x²-4x-12) is the right answer.3x+4a=2px+1 Solve for x.
Answer:
I hope this helps
Step-by-step explanation:
HURRRY DUE IN 1 HR HEEELLLLPPP
helppppppppppppppppppppppppppppppppppppp
Answer:
The answer is B.3 because
3*11=33+22=$55
3*9=27+28=$55
I GIVE BRAINLIEST ANSWER QUICK
Solve the system below
x + 2y = -1
y = -3x - 8
A (2,-1)
B(-3,-l)
C(2,-2)
D (-3, 1
Answer:
It should be D.
Step-by-step explanation:
Write an equation of the line that passes through (2,2) and is parallel to the line y= 7x
Answer:
y = 7x + b must have the same slope
2 = 7(2) + b
What is the prime factorization of 6
Answer:
So, the prime factors of 6 are written as 2 × 3, where 2 and 3 are prime numbers. It is possible to find the exact number of factors with the help of prime factorisation. The prime factor of the 6 is 2 x 3. The exponent in the prime factorisation is 1 and 1.
:-))
Answer:
Factors of 6: 1, 2, 3, 6. Prime factorization: 2 x 3.
Step-by-step explanation:
Solve (-6 - 4)÷(-5) =
-6-4=-10
-10/-5=2
so 2 is ur answer
HELP DOES ANYONE KNOW “?”
Answer:
hope it helps...any queries comment me!!!
