I NEED HELP ON THIS PLEASE!!
Below are the test scores for Ms. Brown's 1st and 2nd period math classes. Analyze the data and choose EACH correct statement:
1st period (Class A): 10, 15, 20, 25, 30, 35, 40
2nd period (Class B): 7, 12, 17, 25, 33, 38, 43
The standard deviation for Class A is 10
The standard deviation for Class B is 12.615
These are the options:
- The mean (average) score for each class is the SAME.
-The mean (average) score for each class is DIFFERENT.
- The variance for Class A is 125.
- The variance for Class B is 159.14.
- Class A has a greater spread.
- Class B has a greater spread.
- Based on the data, a score of 8 is more likely in Class B than Class A.
- If graphed, Class B would look more like the red graph below and Class A would look more like the blue one.
Answers
Answer:
hope that helps
Step-by-step explanation:
- If graphed, Class B would look more like the red graph below and Class A would look more like the blue one.
- Based on the data, a score of 8 is more likely in Class B than Class A.
- Class A has a greater spread.
Related Questions
Write an equation in slope-intercept form that would have infinitely many solutions in a system of equations with 5x+2y=8
Answers
Answer:
y=5/2x-4
Step-by-step explanation:
got it right on my math assignment
The required equation of line in the slope-intercept form will be [tex]y=-\dfrac{5}{2}x+4[/tex].
The given equation of line is [tex]5x+2y=8[/tex].
It is required to write the equation of a line in the slope-intercept form which has infinitely many solutions in the system of equation with the given line.
The system of equations has infinitely many solutions when the equations are the same or all of their coefficients are in the same ratio.
So, the other equation could be,
[tex]k(5x+2y)=8k\\5x+2y=8[/tex]
Now, the equation in slope-intercept form can be written as,
[tex]5x+2y=8\\2y=-5x+8\\y=-\dfrac{5}{2}x+4[/tex]
where the slope of the line is [tex]-\dfrac{5}{2}[/tex] and the y-intercept is 4.
Therefore, the required equation of line in the slope-intercept form will be [tex]y=-\dfrac{5}{2}x+4[/tex].
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The following triangles are congruent because ?
Answers
Answer:
Step-by-step explanation:
The triangles are congruent because they are the same shape, size, and angle measure. The lines on the angles show that two angles have the same measure. The line on the line segments shows that it hads the same length.
144.144 in word form
Answers
Answer:
one hundred forty-four thousands And one hundred forty-four thousandths
Step-by-step explanation:
how many milliliters in 9 liters
Answers
Answer:
9000 milliliters are in 9 liters
Step-by-step explanation:
multiply the volume value by 1000
Answer:
9 meters , i believe so-
Step-by-step explanation:
The sum of 36.4 and a number is 39.21, as shown below. What number should go in the box to complete the addition problem?
Answers
Answer:
The answer would be 2.
Step-by-step explanation:
U just subtract 39.21 -36.4= 2.81
Nathan practices the piano 1316 minutes in 4 weeks. At what rate did she practice, in minutes per day?
Answers
Answer:
47
Step-by-step explanation
4 weeks equals 28 days so you divide 1316 by 28
Answer:47
Step-by-step explanation:
PLS HELP OMG ITS DUE !!!
Answers
CORRECT ANSWER WILL GET BRAINLIEST!!!!
Answers
Answer: The answer is B. x=125
Step-by-step explanation: Brainliest plz :)
i dont know help plz?
Answers
Answer:
its B
Step-by-step explanation:
because its x values repeat
Ostons
3,16 me
pies
1. The Cozy Inn wants to
gather information
about customer
satisfaction
concerning the
cleanliness of its
rooms upon check-in
This Inn has 100
rooms, and the
manager decides to
start with the first room
and place surveys in
this room and every 5th
room thereafter (room
6, room 11. room 16,
etc.)
Answers
Complete question :
The Cozy Inn wants to gather information about customer satisfaction concerning the cleanliness of its rooms upon check-in. This Inn has 100 rooms, and the manager decides to start with the first room and place surveys in this room and every 5th room thereafter (room 6, room 11. room 16, etc.). This is an example of a :
Answer: Systematic sampling
Step-by-step explanation: Systematic sampling usually takes an ordered technique or process in dealing with samples. Systematic sampling could assume a randomized start point in selecting observations, However, every other successive points usually follow a fixed order or selection process. In the scenario above, the manager sampling choice involves an ordered and fixed selection process whereby every fifth sample after the initial point is considered. Hence, resulting in predictable points, such as 6th, 11th, 16th, 21st, 26th, 31st,...and so on.
PLEASE SOMEONE HELP ME ASAP!!! I’ll make you BRAINLIEST!!!!
Write y=2x^2+24x+47 in vertex form. Also please explain/write the steps thanks.
Answers
Answer:
y=(2x^2+24x)+25
y=2x(x^2+12x)+25
y=2x(x^2+12x+36)+25-2x(36)
Y=2x(x+6)^2+25-72
Y=2x(X+6)^2-47
Step-by-step explanation:
sorry it was late
Answer: y=2(x+6)²-5
Step-by-step explanation: First you find the coefficient of x^2, which is 2, then take out 2 as a factor, 24/2 which will equal to 12. After that do 47 divided by 2 if you calculate that it will equal to 23.5. y=2(x²-12+23.5) y =2(x²-12x+23.5)
Next Step: Figure out the coefficient of x. To make it easier,look what is in front of x as you can see it is 12. Then you divide 12/2 which is 6. Then square 6, which is 36. Then you add and subtract 36. To write the first three terms as a square, you do ( x+6)^2. Then do -36 + 23.5 if you calculate that it will get you wil get -12.5 . Now that you have calculated that distribute 2, then do 2 times -12.5 which is -12.5. This is how it shoud look like y=2(x+6)² -12.5.
d) (2x - 5) (5x - 2) = 0
Answers
Answer:
10x^2-29x+10 is the answer of the question..Please use distributive property to solve it
Thank you
In the figure, m<7 = 100. Find the measure of <9.
Answers
As < 7 and angle < 9 are alternate interior angles, their sum will be equal .
Which means :-
[tex] < \: 7 = < \: 9[/tex]
[tex] < 9 = 100°[/tex]
Therefore , the value of <9 is 100° .
The magnitude of ∠9 will be same as that of ∠7 which is equal to 100°.
What are parallel lines?
Two or more lines that lie in the same plane, equidistant from each other and never intersect each other are known as parallel lines.
Given is ∠7 = 100°.
The lines u and t are parallel to each other. The alternate interior angles are equal in magnitude. From the figure it is clear that ∠7 and ∠9 are alternate interior angles. Therefore, we can say that ∠7 = ∠9 = 100°.
Therefore, the magnitude of ∠9 will be same as that of ∠7 which is equal to 100°.
To solve more questions on Angle Relationship, visit the link below-
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If r varies directly as t and r = 6 when
t = 11, find the value of t when r= 24
Answers
Answer:
t=44
4.6=24
4.11=44
r=6
t=11
4r=24
4t=44
Please help me. I don’t know which phone contract is better.
I am going to change my phone contract. The monthly contract I am considering costs $30 per month with 75 minutes of free calls and 100 free text messages. Additional calls cost 10¢ per minute and additional text messages 10¢ each. An alternative is ‘Pay as you go’ which has no monthly charge but all calls cost 30¢ per minute and texts cost 10¢ each. I typically make 100 minutes of calls and 60 text messages each month. Which would be the better contract for me and by how much?
Answers
Answer:
the monthly contract seems pretty good
Step-by-step explanation:
why pay 30 cent or 10 cent per min when you can just pay monthly cause eventually you going to be paying the same amount . hope this helpsssssss. brainliest:)
What is two hundred sixty-five thousandths in standard form?
Answers
Answer:
10^-1*2.65
Step-by-step explanation:
two hundred sixty-five thousandths= 0.265
We need a number between 1 and 10, to do the multiplication in standard form, so 0.265 turns into 2.65.
Because 2.65 becomes, smaller we use a negative power. We only move the decimal place once to the left, so we would multiply 2.65 by 10^1.
10^-1*2.65=0.265
The standard form of two hundred sixty-five thousandths is 265 × 10⁻³.
What is a number system?The number system is a way to represent or express numbers.
A decimal number is a very common number that we use frequently.
Since the decimal number system employs ten digits from 0 to 9, it has a base of 10.
Any of the multiple sets of symbols and the guidelines for utilizing them to represent numbers are included in the Number System.
Given that,
Two hundred sixty-five = 200 + 65 = 265
Now,
Thousandths mean we need to divide it by thousand
So,
⇒ 265/1000
⇒ 265/10³
By the law of indices
⇒ 265 × 10⁻³
Hence "The standard form of two hundred sixty-five thousandths is 265 × 10⁻³".
For more about the number system,
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Please answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!
Answers
Answer:
30 bro cmon
Step-by-step explanation:
it's acute so the smallest would make sense cmon bruh u better than that
Mario volunteered 1,386 minutes each month for 36 months. How many minutes did Mario volunteer in total???
Answers
1,386 * 36
Answer:
49,860
Step-by-step explanation:
Mario volunteered 49,860 in total.
an amount of money that is taken from an account.
interest
savings
debit
Answers
Answer:
It is debit Debit- an amount of money that is taken from an account.
I need help Asap, please
Answers
Round to the nearest tenth.
4.8367
Answers
Answer:
Number = 4.8367
Rounded to the nearest tenth means, rounded to the number after the decimal point.
We will have to round down because the hundredth is less than 5
So, we get,
4.8367 becomes, 4.8
Therefore 4.8367 rounded to the nearest tenth = 4.8
If my answer helped, kindly mark me as the Brainliest!!
Thank You!
The number 4.8367, when rounded to the nearest tenth, becomes 4.8
What is rounding a number to some specific place?Rounding some number to a specific value is making its value simpler (therefore losing accuracy), mostly done for better readability or accessibility.
Rounding to some place keeps it accurate on the left side of that place but rounded or sort of like trimmed from the right in terms of exact digits.
The digit 5 acts as a limit.
if the right sided digit to the digit where we've to round off is < 5, we keep it same and make all right sided values 0, and if the right sided digit is > 5, then we make it increase by 1 and rest of the right sided digits become 0. If the digit on right is 5, and after it there is only zeros or no value, then we round up (increase by 1, as we did in 347500 -> 34800 ) (Well there are many detailed rules of rounding)
Rounding to the nearest tenth means rounding the first place to the right of the decimal point.
The given number is 4.8367
The digit on the right of the decimal point is 8. On the right of that, there is 3, which is < 5, so the first right digit on right of the decimal point, after rounding, will have no change,and rest of the numbers from the right first place of the decimal point will get trimmed off.
Thus, we get:
4.8367 → 4.8 (after rounding to the nearest tenth)
Thus, the number 4.8367, when rounded to the nearest tenth, becomes 4.8
Learn more about rounding numbers here:
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if f(x)=7(x-1)+8, what is the value of f(1)
Answers
Answer:
8
Step-by-step explanation:
f(1)=7(1-1)+8
f(1)=7(0)+8
f(1)=0+8
f(1)=8
The value of f(1) if f(x)=7(x-1)+8 is 8
From the question,
The given function is f(x)=7(x-1)+8
We are to determine the value of f(1) if f(x)=7(x-1)+8
To do this, we will put the value x =1 into the function
That is,
f(x)=7(x-1)+8 becomes
f(1)=7(1-1)+8
The, we get
f(1) = 7(0) + 8
f(1) = 7×0 + 8
f(1) = 0 + 8
∴ f(1) = 8
Hence, the value of f(1) if f(x)=7(x-1)+8 is 8
Learn more here: https://brainly.com/question/18905400
Describe in words a sequence of transformations that maps ABC to A'B'C'
Answers
Answer:
First is a 90Âş rotation (counter-clockwise) with respect to the origin. Next is a horizontal transformation of +2 units. Transformation one is (x, y) -> (-y, x) Transformation two is (x, y) -> (x + 2, y)
Step-by-step explanation:
which relation is not a function?
A) (1,2)(2,10)(4,5)
b) (-3,5)(3,5)(5,6)
c) (3,6)(6,3)(3,2)
d) (1,6)(-1,6)(2,2)
Answers
Answer:
Step-by-step explanation: f
Solve for p:
2p + 3 = 25
Answers
Answer:
p = 11
Step-by-step explanation:
What is the equation of the line that passes through the point (-3, 6) and has a
slope of -1
Answers
Answer:
-9xy (xy+xy)-3
Step-by-step explanation:
What is the equation of the line that passes through the point (-3, 6) and has a
slope of -1
Answer:
y=-x+3
If (8^2)^p=8^4, what is the value of p?
A) 2
B) 3
C) 4
D) 6
Answers
Answer:
A. 2
Step-by-step explanation:
8^4 = 4096
(8^2)^2 = 4096
What do the zero exponent and negative exponents properties mean
Answers
0
,
the result is
1.
Mathematicians debate the value of
0
0
.
Some say it's
1
,
and some say it's undefined.
Here are some examples of the Zero Power Rule. Notice it works for numbers and for variables.
1
0
=
1
(
153
+
x
)
0
=
1
,
if
x
≠
−
153
(
x
+
y
+
z
)
0
=
1
,
if
x
+
y
+
z
≠
0
So when
a
≠
0
,
why does
a
0
=
1
?
Why does the Zero Power Rule hold? Here's one way to think about it:
a
0
=
a
n
−
n
Then, by the quotient rule for exponents, we can write this as:
a
n
−
n
=
a
n
a
n
Then this becomes a problem about dividing fractions. Since the numerator and the denominator are both the same this becomes
1
.
a
n
a
n
=
1
A negative exponent means how many times to divided by the number
each student needs 3/4 sticks of clay to do an art project. If 14 students wanted to do this art project, how many sticks of clay would they need?
Answers
Answer:
10 1/2 sticks of clay
Step-by-step explanation:
14 × 3/4
14=14/1
14/1 × 3/4
multiply numerators
14 × 3 = 42
multiply denominators
1 × 4 = 4
42/4
simplify
21/2
convert improper fraction to mixed fraction
10 1/2
given that 5x - 8y = 29 find y when x = -1 give your answer as an improper fraction
Answers
Answer with step-by-step explanation:
If x = -1, we can re-write the equation as -5 - 8y = 29.
Step 1: Simplify both sides of the equation.
-5 - 8y = 29
-5 + (-8y) = 29
-8y - 5 = 29
Step 2: Add 5 to both sides.
-8y - 5 + 5 = 29 + 5
-8y = 34
Step 3: Divide both sides by -8.
-8y/-8 = 34/-8
y = -17/4
Hope this helped! (brainliest please)
