The two dot plots show the number of miles ran by 14 students at the beginning and at the end of the school year compare each measure of the two dot plots
The two dot plots are missing, so i have attached it.
Answer:
The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles
Step-by-step explanation:
From the attached image, we are told to compare the means for each plot to the nearest tenth.
Mean = Σx/n
Now, from the image, total number of miles run by the 14 students at the beginning of the school year is;
(1 × 7) + (2 × 8) + (4 × 9) + (4 × 10) + (2 × 11) + (1 × 12) = 133
Mean of miles run at the beginning of the school year = 133/14 = 9.5 miles
Again, from the table, total miles run at the end of the school year = (2 × 8) + (2 × 9) + (4 × 10) + (3 × 11) + (3 × 12) = 143
Mean of miles run at the end of the school year = 143/14 = 10.2 miles
Thus;
The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles
Let a be a rational number and b be an irrational number. Is a+b rational or irrational?
Please HALP
What is the value of tangent theta in the unit circle below? One-half StartFraction StartRoot 3 EndRoot Over 3 EndFraction StartFraction StartRoot 3 EndRoot Over 2 EndFraction StartRoot 3 EndRoot
Answer:
[tex]\frac{1}{\sqrt{3} }[/tex]
Step-by-step explanation:
A unit circle is defined as a circle of unit radius (that is the radius of the circle is equal to 1). In trigonometry, the unit circle is a circle with a radius of 1, while centered at the origin (0, 0) in the Cartesian coordinate.
In the unit circle below, we can see that the line touches the unit circle at point [tex](\frac{\sqrt{3} }{2} ,\frac{1}{2})[/tex], therefore to find the tangent of theta, we use the formula:
[tex]tan\theta = \frac{y}{x} \\\\tan\theta=\frac{\frac{1}{2} }{\frac{\sqrt{3} }{2} } =\frac{1}{2}*\frac{2}{\sqrt{3} } \\\\tan\theta=\frac{1}{\sqrt{3} }[/tex]
Answer:
StartFraction StartRoot 3 EndRoot Over 3 EndFraction
Step-by-step explanation:
I think thats what the answer above meant.
please help!! it’s about percents and finding the totals cost!!!help fast
Answer:658.73
Step-by-step explanation:
6.25 percent of 619.98 is $34.74875
we round $34.74875 to $34.75
then we add
619.98 + 34.75 = 658.73
PLEASE MARK BRAINLIEST AND GIVE 5 STARS.
Find the area of the composite shape shown below:
6ft
9ft
3ft 4ft
Write an equation for the amount of money, , that will be collected if boxes of chocolate bars are sold. Which is the independent variable and which is the dependent variable
Answer:
Kindly check explanation
Step-by-step explanation:
Let amount of money = C
If the number of chocolate bars sold = x
Let cost per chocolate bar = p, since cost per bar isn't stated
Amount of money that will be collected :
C(x) = P * x
The dependent variable is the Amount of money that will be collected as the amount of money depends on the number of chockate bars sold
The number of chocolate bars sold us the independent variable as it dictates the amout of money to be collected, hence it is the predictor variable.
If afsheen can read 39 pages in 30 minutes how much tume she need to read 1287 pages
Answer:
16 hours and 30 minutes
Step-by-step explanation:
(6.03)
Which of the following best describes the expression 6(y + 3)?
Answer:
what are the followings..........
Answer:
i think
6y+18
...........
3x+9=33 pls help me with this problem it will be helpful
Answer:
8
Step-by-step explanation:
First we subtract 33 by 9 which equals 24. Then we divide 24 by 3 which equals 8.
To check your answer, multiply 8 by 3 then add 9.
Use the law of cosines to solve the triangle.
a=45,b=30,c=72
What is the expected sum of two weighted dice on which the number 5 occurs twice as often as the other numbers? ans: 7.02
Answer:
Skip this comment
Step-by-step explanation:
Sjsnsbabjand shsbshs sjsjjdnt sjxuxhjsw sjwjwn
What is the value of y in 6y+4
Answer:
1.5y
Step-by-step
what is this trying to bring my grades up pls help
Answer:
Answer down below!
Step-by-step explanation:
The origin is the middle of the plot, which is represented by the coordinates (0,0)
So, yoy would click on the middle where it says 0.
A taxi cab cost $1.75 for the 1st mile and .75 for each additional mile you have $20 to spend on your ride was in a quality could be certified and how many miles you can travel if N is a number of additional miles
Answer: 0.75n+1.75 ≤ 20 because you have to have the number of additional miles with the cost of $0.75 per mile but then you have to add the original first mile with a cost of $1.75. It has to be less than or equal to because you only have $20 to spend you can't spend more than that you have to spend that amount or less.
Step-by-step explanation:
Answer:
25 miles or 25.333
Step-by-step explanation:
can somebody help me with this one? I've never been good at this in math
Answer:
I'm pretty sure it's reflective and hypotenuse
Step-by-step explanation:
Is this correct? Please answer
Answer:
A Right triangle is 90 Degrees so that leaves 10 as the area of the side of the right line and the other side would be a Acute triangle that side would be 50 Degrees so that leaves 15 as the perimeter ok then you multiply 15 by 3 which is 45 and multiply 10 times 3 to get 30, 45 plus 30 is 75 so yes you are correct!!! :))))))))))
Answer:
Yes its right
Step-by-step explanation:
Will's suitcase must weigh less than 50 pounds. Choose the inequality that best represents the situation. a: x ≤ 50 b: a<50
Answer:
A
Step-by-step explanation:
Factor please.
m^2 - 64n^2
Answer:
(n - 8n)(m+8n)
Step-by-step explanation:
x² - y² = (x - y)(x + y)
In this situation, the "x" = m and the "y" = 8n
So,
m² - 64n² = (n - 8n)(m+8n)
Answer:
(m - 8n)(m + 8n)
Step-by-step explanation:
m² - 64n² ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , then
m² - 64n²
= m² - (8n)²
= (m - 8n)(m + 8n)
find the value of given expression
[tex] \sqrt{99 \times 33 \times 3} [/tex]
Answer:
√{99×33×3}=√{33×3×33×3}=√(33²×3²)=±33×3=±99
Answer:
99
Step-by-step explanation:
Cause 33×3=99 ,and the function of the root is to get the number that we multiply it ti itself
For example [tex]\sqrt{4}[/tex] =2 cause 2×2=4 ,so[tex]\sqrt{2*2}[/tex] =[tex]\sqrt{4}[/tex] which is =2
so [tex]\sqrt{99^{2} }[/tex] =99
y = x^2+8x-7
Use the formula x=-b/2a
b = 8
a = 1
using the formula given
x = -8/2
x = -4
Type the expression that results from the following series of steps:
Start with x, subtract 6, then divide by 7.
In the following diagram, m AC=97º and m CD= 112°. Find the measure of angle
x.
Answer:
In the diagram, assume that segments are tangents if they appear to be. Find the ... Find the length of an arc with measure 62° in a circle with radius 2 m. 21. I hope this helps u
Step-by-step explanation:
A cone has a volume of 715.92 cubic feet and a radius of 6 feet. What is its height?
Answer:
The answer is 4295.52
Step-by-step explanation:
The solution to which system of equations has an y-value of 0?
(A) x + 2y=-1; y = 3x + 3
(B) 3x – y=2; x + 2y=-1
y= 3x + 3; 2x + 3y=01
(D) 2x + 3y=0; x + 2y=-1
Answer:
option D I think So
Step-by-step explanation:
give me the branirst
The only system of equation (A) has a y-value of 0.
What are Systems of equations?Simultaneous equations, a system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular solution.
There are four methods for solving systems of equations: graphing, substitution, elimination, and matrices.
To find the solution with a y-value of 0, we need to substitute y=0 in each equation of the system and solve for x.
(A) x + 2y = -1
x + 2(0) = -1
x = -1
y = 3x + 3
y = 3(-1) + 3
y = 0
The solution to system A has a y-value of 0.
(B) 3x - y = 2
3x - 0 = 2
x = 2/3
x + 2y = -1
(2/3) + 2y = -1
2y = -1 - (2/3)
2y = -5/3
y = -5/6
The solution to system B does not have a y-value of 0.
(C) y = 3x + 3
y = 3x + 3 implies that y cannot be 0, so this system cannot have a solution with a y-value of 0.
(D) 2x + 3y = 0
2x + 3(0) = 0
2x = 0
x = 0
x + 2y = -1
0 + 2y = -1
y = -1/2
The solution to system D does not have a y-value of 0.
Therefore, the solution to system A has a y-value of 0.
Learn more about the System of equations here:
https://brainly.com/question/12628931
#SPJ7
Find the volume of the Cone. Use 3.14 for . Round your answer to the nearest hundredth ( 2 decimals). Show your work in this question, and record your answer in the next question.
Answer:
2,616.67cm³
Step-by-step explanation:
Find the diagram attached
volume of the cone = πr²h/3
r is the radius = 10cm
h is the height = 25cm
Substitute
V = 3.14(10)²*25/3
V = 314*25/3
V = 7850/3
V = 2,616.67cm³
Hence the volume of the cone to the nearest hundredth is 2,616.67cm³
7m+9, for m=2.
Someone solve please
Tristan paid $17.50 to buy 2 pounds of peanuts and 3 pounds of cashews. Rivka paid $19.00 to buy 5 pounds of peanuts and 2 pounds of cashews. If both people paid the same price per pound, what was the price per pound for the cashews?
A. $2.00
B. $3.80
C. $4.50
D. $8.75
Answer:
C. $4.50
Step-by-step explanation:
hello, there.
1) 2p + 3c = 17.50
2) 5p + 2c = 19.00
:
Solve equation 1 for p
:
p = (17.50 - 3c) / 2
:
Substitute for p in second equation
:
(5(17.50 - 3c) / 2) + 2c = 19.00
:
Multiply both sides of = by 2
:
(5(17.50 - 3c)) + 4c = 38.00
:
87.50 - 15c + 4c = 38.00
:
-11c = -49.50
:
c = 4.50
:
---------
Cashews are $4.50 per pound
--------------
:have a great day.
Answer:
C
Step-by-step explanation:
Let p represent the cost for one pound of peanuts and let c represent the cost for one pound of cashews.
Two pounds of peanuts and three pounds of cashews cost $17.50. So:
[tex]2p+3c=17.5[/tex]
Five pounds of peanuts and two pounds of cashews cost $19.00. So:
[tex]5p+2c=19[/tex]
This yields a system of equations.
We can solve this using elimination. We can multiply the first equation by -5, and the second by 2. Therefore:
[tex]-5(2p+3c)=-5(17.5)[/tex]
Multiply:
[tex]-10p-15c=-87.5[/tex]
And:
[tex]2(5p+2c)=2(19)[/tex]
Multiply:
[tex]10p+4c=38[/tex]
Now, we can add the two equations together:
[tex](-10p-15c)+(10p+4c)=(-87.5+38)[/tex]
Combine like terms:
[tex]-11c=-49.5[/tex]
Therefore:
[tex]c=4.5[/tex]
So, a pound of cashews costs $4.50.
Our answer is C.
Notes:
To solve for the cost for peanuts, we can use the first (or second equation) again:
[tex]2p+3c=17.5[/tex]
Substitute:
[tex]2p+3(4.5)=17.5[/tex]
Solve for p:
[tex]2p+13.5=17.5\Rightarrow 2p=4\Rightarrow p=2[/tex]
So, a pound of peanutes cost $2.00.
13 more than a number is 29
13 + n = 29
13 + 29 = n
n + 29 = 13
13n = 29
29n = 13
Answer:
id.k if this is right sorry if it wrong
Answer:
It should be the 3rd option
Step-by-step explanation:
I hope this helps
Which expression is equivalent to 4m + 3?
A. 2(2m + 3)
B. -2(-2m + 3)
C. (-2)m - (-1)3 + (-2)2m
D. (-2)m - (-3)1 + (2)3m
Answer:
D)
Step-by-step explanation:
4m+3
the problem is the image (How is everyone day)
Answer:
casey has the faster rate
Step-by-step explanation:
first multiply jessicas race distance and time by 2
30 * 2
= 60
5 * 2
= 10
we did that so both jessicas time and caseys time was the same, making it easier to solve ( also by this point we already know who has the faster rate )
now we are going to divide both of their times and distances by 5
casey
10/5
= 2
45/5
= 9
jessica
10/5
= 2
60/5
12
the step is to divide their times/distances once again but this time by 2
casey
2/1
= 1
9/2
= 4.5
jessica
2/1
= 1
12/2
= 6
and our answer is 4.5 or casey !
4.5 > 6
hope this helps you! :)