Answer:
The error is in Step 3:
She should have calculated the interquartile range as,
Chemistry = 85 - 60 = 25
Biology = 80 - 60 = 20
Step-by-step explanation:
*In a box plot, the median is the point on the number line where a line divides the rectangular box.
Thus, from the information given in the question about the box plots, the median for Chemistry = 80 (this is where a line divides the box)
Median for Biology = 70
The difference in the median = 80 - 70 = 10.
*Lauren didn't make any mistake in Step 1 and 2, as he equally got the same values.
==>The interquartile range in a box plot is simply the difference in the ranges (Q3 - Q1).
From the given information, the interquartile range for Chemistry = 85 - 60 = 25 (this is the difference in the ranges of the box)
Interquartile range for Biology = 80 - 60 = 20
The difference in interquartile range = 25 - 20 = 5
*Lauren made an error in Step 3 when calculating the interquartile range for both Chemistry and Biology, even though he arrive at the same value of the difference in the interquartile range we got as calculated above.
Answer:
to simplyify it the answer is D
Step-by-step explanation:
The solution of the following System of linear equation 2x-3y=-11 is x+3y=8 a) (1,3) b) (-1,3) c) (1,-3) d) (-1,-3)
Answer:
(-1,3)
Step-by-step explanation:
Because bruh
This table shows values that represent a quadratic function.
x
0
1
2
3
4
5
6
y
--1
-2
5
-10
-17
-26
-37
What is the average rate of change for this quadratic function for the interval
from x = 3 to x = 5?
A. 8
B. 16
O C. -16
c
D. 8
Answer:
D
Step-by-step explanation:
The y values change by -26 - (-10) = -16 in the interval and the x values change by 5 - 3 = 2 so the average rate of change is -16 / 2 = -8.
Answer:
D. -8
Step-by-step explanation:
Risked it all for my grades.
What is the volume of the sphere shown below?
O A. 69127 units
O B. 23047 units
O C. 1927 units
O D. 57677 units
Answer:
Step-by-step explanation:
r = 12
V = 4*pi * r^3 / 3
V = 4 * 3.14 * 12^3 /3
V = 4 * 3.14 * 1728 / 3
V = 4 * 5425.92 /3
V = 21703.68/3
V = 7234.56
None of the answers look correct.
Mariah is completing a language arts review sheet she estimates that it takes her one minute to complete each multiple-choice question and six minutes to complete each essay question this equation represents the total time it takes her to complete X multiple choice question and y essay question X plus 6Y equals 36 select the correct answer from each drop down menu
Answer:
The answer is below
Step-by-step explanation:
Given the time taken to answer each multiple choice question as one minute, the time taken to x multiple choice question = 1 minute/question × x questions = x minutes
Given the time taken to answer each essay question as six minute, the time taken to y essay question = 6 minute/question × y questions = 6y minutes
Therefore the total time taken to complete X multiple choice question and y essay questions = the time taken to x multiple choice question + the time taken to y essay question = x + 6y
Answer:
directly off of edmentum
PLEASE HELP ASAP
Tony used a photocopier to dilate the design for a monorail track system. The figure below shows the design and its photocopy:
Two irregular quadrilaterals ABCD and EFGH are drawn. EFGH is the photocopy of design ABCD. AB measures 15 meters, DC measures 17 meters. No dimensions are shown on EFGH.
The ratio of CD:GH is 2:3. What is the length, in meters, of side EH on the photocopied image? (5 points)
Answer: EH = 12
Step-by-step explanation:
CD : GH = 2 : 3 ⇒ AD : EH = 2 : 3
AD = 8
AD : EH
2 : 3
×4 ×4
8 : 12
Kendrick rolls a pair of standard six-sided dice. What is the probability that both faces show an odd number?
Answer:
1/4 , 25%
Step-by-step explanation:
https://brainly.com/question/4091485
The zeroes of the function are . of the zeroes have a multiplicity of 2.
Answer:
The three roots have a multiplicity of 2
Step-by-step explanation:
The zeros of the function refers to those points on the x-axis on which the curve passes through
These are the points -2,0 and 4
Now we want to determine which of these points has a multiplicity of 2?
The correct answer is that all have a multiplicity of 2 since 2 can be factored out
2(-1) , 2(0) and 2(2)
Answer:
the answer is A. none
Latisha worked for six hours and 45 minutes how should she write that on her time card
Answer:
Hey there!
6 hrs 45 mins = 405 mins, or 6.75 hours.
Hope this helps :)
the question is 7 diveid 0.25
Answer:
28
Step-by-step explanation:
Answer:
Hello!
~~~~~~~~~~~~~~~~~~~~~~~~~~~
7 / 0.25 = 28
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step-by-step explanation: Divide 7 by 0.25 to get 28.
Hope this helped you!
What is the measure of ∠x angles are not necessarily drawn to scale.
Answer:
58 degrees
Step-by-step explanation:
The other two angles are 56 and 66 degrees and you know that all the angles add up to 180 degrees.
So just subtract:
180-56-66= 58 degrees
it works because the lines are parallel in the picture.
If you were solving the system of linear equations below by using Elimination, choose the answer that would be the best first step of solving with Elimination.
Answer:
multiply the bottom equation by 3
Step-by-step explanation:
we multiply to make the values of x same
9x+5y=1
-3x+2y=10 after= -9x+6y=10 thus one can eliminate the x value 9x
Explain how to solve for the rate in a simple interest equation if you are given the interest amount, the principal, and the time.
Answer:
divide the interest amount by the product of the principal and time
Step-by-step explanation:
The simple interest formula is I = prt where I is the interest, p is the principal, r is the rate and t is the time (in years). Rewriting this formula so that r is the subject we get r = I / pt. Therefore the answer is divide the interest amount by the product of the principal and time.
What are the zeros of f(x) = x2 - 8x+ 15?
Answer:
x=5 x=3
Step-by-step explanation:
f(x) = x^2 - 8x+ 15
Factor
What two numbers multiply to 15 and add to -8
-5*-3 = 15
-5+-3 = -8
f(x) = (x-5) (x-3)
Setting equal to 0
0= (x-5) (x-3)
Using the zero product property
x-5 =0 x-3=0
x=5 x=3
A roof has a cross section that is a right triangle. The diagram shows the approximate dimensions of this cross section. Find the height h of the roof. Round your answer to the nearest tenth.
Answer:
The height of the roof is 25 ft.
Step-by-step explanation:
Consider the right angled triangle BCD.
Determine the measure of side BD using the Pythagoras theorem
[tex]BD^{2}=BC^{2}+CD^{2}\\\\BD=\sqrt{BC^{2}+CD^{2}}\\\\=\sqrt{10^{2}+5^{2}}\\\\=\sqrt{125}[/tex]
Compute the measure of angle x as follows:
[tex]tan\ x=\frac{BC}{CD}\\\\tan\ x=\frac{10}{5}\\\\tan\ x=2\\\\x=tan^{-1}2\\\\x=63.4[/tex]
Now consider the triangle ABD.
The hypotenuse AD is the height of the roof.
Determine the measure of side AD as follows:
[tex]cos\ x=\frac{BD}{AD}\\\\cos\ 63.4=\frac{\sqrt{125}}{AD}\\\\0.4478=\frac{\sqrt{125}}{AD}\\\\AD=\frac{\sqrt{125}}{0.4478}\\\\AD=24.967\\\\AD\approx 25[/tex]
Thus, the height of the roof is 25 ft.
Answer:
25ft :)
Step-by-step explanation:
Please help with this ASAP!!! question down below in picture.
Answer: x=15 aka C
Step-by-step explanation:
Equation: 3x = (5x-30)
Solve:
3x-5x=-30
-2x=-30
Divide each side by two
x=15
hope i helped
-lvr
what is an inequality that represents this sentence?
if seven times a number is decreased by three, the result is less than thirty.
Answer:
7x-3<30
Step-by-step explanation:
7 times a number = 7x
is decreased by 3 = -3
the result is less than 30 = <30
Answer:
7x - 3 < 30
Step-by-step explanation:
We can put "seven times a number" as 7x since a number is unknown -->
now decreased is subraction so we have 7x - 3 -->
the result is less than thirty is that the difference must be less then 30.
so, 7x - 3 < 30.
Hope this helps!
Gracie has 1/2 of a cantaloupe that she wants to divide. How many 1/6s of a cantaloupe are there in 1/2 of a cantaloupe
Answer:
There are 6 1/6 slices in half a cantaloupe
Answer:
3
Step-by-step explanation:
(1/2)/(1/6)= 1/2*6/1=3 it has 3 (1/6)s
PLS HELP ME IVE BEEN TRYING
Answer:
try and let me know is it correct or not line A-4 lineB-8
Step-by-step explanation:
i also use mathswatch
1 Negative numbers do not need the
negative sign (-) in front of them.
O True
O False
Answer:
The answer is False
Step-by-step explanation:
Answer:
FALSE ALL NEGATIVE NUMBERS NEED A NEGATIVE SIGHT(-)
Step-by-step explanation:
-1,-2,-3, PLEASE MARK BRAINLEST
How did the temperature change if:
It increased by 50 % and
then decreased by
33 1
— %
3
Answer
it didnt change at all
Step-by-step explanation:
i gotcha help
Most of the seniors at Roosevelt High School took a math class this year. The graph shows the breakdown: Find the number of degrees for each math class. State the class and the degrees. Show your work.
Answer:
Step-by-step explanation:
Since, sum of central angles of a circle = 360°
Therefore, sum of all central angles formed by each math class = 360°
And measure of angles formed by each class will be in the same proportion as the percentage of seniors in each class.
Geometry → 27% of 360° = 97.2°
Precalculus → 4% of 360° = 14.4°
Advanced algebra → 33% of 360° = 118.8°
Consumer math → 36% of 360° = 129.6°
Answer:
There are 360 degrees in a circle so I need to do the percentage of 360
Geometry: 27% of 360 = 97.2 °
Consumer Math: 36% of 360 = 129.6 °
Advanced Algebra: 33% of 360 = 118.8 °
Precalculus: 4% of 360 = 14.4 °
can anyone help me to answer this question
Answer:
0 or 6
Step-by-step explanation:
2aa = 12a
2a² = 12a
Subtract 12a from both sides.
2a² - 12a = 0
Factor left side of equation.
2a(a - 6)=0
Set factors equal to 0.
2a = 0
a =
a - 6 = 0
a = 6
how can knowledge of circles apply to daily life??
Answer:
sdgsdgsdgsdgsdgsd
Step-by-step explanation:
gsdgsdgsdgsdgsd
If cot x° = three fourths, what is the value of b? Triangle LMN in which angle M measures 90 degrees, angle L measures x degrees, LM measures 10.5 units, and NM measures 2b units b = 4 b = 5 b = 6 b = 7
Answer:
The answer would be b=7.
Step-by-step explanation:
The reason for this is that cot x = 3/4. That means tan x = 4/3. In tangent 4/3 is opposite/adjacent. So 4 is opposite and 3 is adjacent.
The picture is below if you needed it.
The answer is not 4 though because we need to put it into ratio form. 10.5 = to the 3 and 2b is equal to the 4.
Since we understand this information we now cross multiply to get the answer.
3/10.5 = 4/2b
When you cross multiply you get 7 = b.
This is the answer. To check you can put it into the ration again.
3 divided by 4 is 0.75 as is 10.5 divided by 2(7) or 14.
This is how to answer and check the problem
If you liked this answer and it helped you, please check out my utube channel The Game Rater. Thank you.
The value of b from the given diagram is 7.
Right angle triangleGiven the following parameters:
[tex]cot(x)=\frac{3}{4} \\tan(x)=\frac{4}{3}[/tex]
From the given diagram, the opposite is 4 and the adjacent is 3
Substitute the sides of the triangle:
[tex]tan(x)=\frac{2b}{10.5} \\\frac{4}{3}= \frac{2b}{10.5} \\6b=42\\b =\frac{42}{6}\\b=7[/tex]
Hence the value of b from the given diagram is 7.
Learn more on trigonometry here: https://brainly.com/question/24349828
i cant find answer pls help me :)
Answer:
m n^4 p^3
Step-by-step explanation:
m^7 n^4 p^3 and m n^12 p^5
We have 7 m's on the left and one on the right
We have one m in common
We have 4 n's on the left and 12 on the right
We have 4 n's in common
We have 3 p's on the left and 5 on the right
We have 3 p's in common
m n^4 p^3
Answer:
m^1n^4p^3
Step-by-step explanation:
m^7n^4p^3 = mmmmmmmnnnnppp
mn^12p^5 = mnnnnnnnnnnnnppppp
Which factors are in common?
m^7n^4p^3 = mmmmmmmnnnnppp
mn^12p^5 = mnnnnnnnnnnnnppppp
Use common variables with lower exponent.
GCF = mnnnnppp
GCF = m^1n^4p^3
P.S. If you must fill in each box with an exponent, make sure you put a 1 for m, not a zero. m^1 = m, but m^0 = 1. If you are allowed to leave it blank, then leave it blank.
expand the following 8 (3x-y)
Answer:
24x-8y
Step-by-step explanation:
8(3x-y) - distributive property
24x-8y
Answer:
24x - 8y.
Step-by-step explanation:
8(3x - y) = 8 * 3x - 8 * y = 24x - 8y
Hope this helps!
y=-x^2-2x-5 whats the vertex of this parabola
Answer:
The vertex is (-1, -4)
Step-by-step explanation:
Let's find the vertex by completing the square of y= -x^2 - 2x - 5.
Isolate the first two terms inside parentheses: y= -(x^2 + 2x) - 5
Now complete the square of the expression inside these parentheses:
y = -(x^2 + 2x + 1 - 1) - 5
and rewrite this as
y = -(x + 1)^2 + 1 - 5, or
y = -(x + 1)^2 - 4
(x + 1) tells us that the x-coordinate of the vertex, h, is -1, and the -4 term tells us that the y-coordinate, k, is -4.
The vertex is (-1, -4)
47:PLEASE HELP Find the y-intercept of -x +2y=20
Answer:
(0,10)
Step-by-step explanation:
-x + 2y = 20
2y = x +20
y = 1/2x + 10
This is slope-intercept form. The y-intercept is 10.
(0,10)
Answer:
(0, 10)
Step-by-step explanation:
Can be simplified to
2y = x+20 by adding x to both sides
then divide by 2 to get to slope intercept form: y = ax+b
b is the y-intercept
y = 1/2x + 10
so the answer is 10
Identify the parts relating to CircleA. What is Line F G? Secant What is Line segment D B? Tangent What is Line segment D H? Secant What is AC? Radius
Answer:
Line FG secant
Line segment DH secant
Line segment DB tangent
Line segment AC radius
Step-by-step explanation:
A Secant is a line that passes through the two points on a circle.It cuts the circle on two points.
Line FG is a secant as it passes through two pints.
Line segment DH is also a secant as it passes through two points.
A tangent is a line that passes through only one point on a circle. It is outside the circle. It is perpendicular to the radius at the point where it touches the circle.
Line segment DB is a tangent as it passes through only one point.
Radius is the line segment joining the center of the circle and any point on the circumference of the circle. It is half of the diameter.
Line segment AC is a radius as it joins the center of the circle with the circumference.
Answer:
1) FG -- Secant
2) DB -- Tangent
3) DH -- Secant
4) AC -- Radius
Step-by-step explanation:
Christa's distance from school is represented by y=-100x +1300.
Stephen's distance from school is represented by y= -60x +1000.
Using the slope and y-intercept from each equation, find out who lives
farther from school and who walked to school faster.
Answer:
Christa walked faster and farther than Stephen.
Step-by-step explanation:
Answer:
Step-by-step explanation:
If you think of the y-axis is the "distance" axis (in feet for example), and the x-axis as the time axis (in minutes for example), then what you have is a velocity graph (velocity is the distance traveled divided by the time it takes to get there). If you haven't moved at all, your time is 0 (ON the y-axis) and the distance value (the y-intercept) is where you started. In other words, if no time has gone by, I haven't moved from my initial position yet. So the y-intercept of both of those equations serves as the intial distance each is from school.
In the equation y = mx + b, b is the y-intercept. The y-intercept in Christa's equation is 1300 (in feet) which means that before she leaves her house for school (no time has gone by yet), her initial distance from school is 1300 feet. Likewise, for Stephen. The y-intercept in his equation is 1000, so his initial distance from school is 1000 feet. Christa lives farther away than does Stephen.
Now for the rate they are each walking...
Rate is also (sort of the same thing as) velocity. It is represented in our equation by the m. In a "regular" slope-intercept equation, this would be the slope. Slope is the rate at which something is changing. Since our graph is a velocity graph--distance over time--our slope represents the distance each covers for every minute they walk. Christa's velocity is 100 feet per minute and Stephen's is 60 feet per minute. From this we can determine that Christa walks faster because she covers more feet per minute than does Stephen.
The equations are both negative because they are shortening their distances to the school. By this I mean that as they continue walking to school and the amount of time that goes by gets greater, the distance they are from the school gets smaller.
Hope this helps you understand what linear equations actually mean to the real world!