The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix below represents the tickets sold and the total cost of the tickets for three performances.
Answers
Answer:
a is the correct answer in e2020
Step-by-step explanation:
Based on the calculations, the row operation (-2R₁ + R₂ → R₂) is equal to:\(\left[\begin{array}{cccc}3&12&8&102\\0&-6&-6&-42\\0&15&5&85\end{array}\right]\)
How to determine a row operation?First of all, we would write a matrix to represent the number of tickets sold and the total cost of the tickets for three performances as follows:
\(\left[\begin{array}{cccc}3&12&8&102\\6&10&6&102\\0&15&5&85\end{array}\right]\)
Next, we would perform this row operation (-2R₁ + R₂ → R₂):
\(\left[\begin{array}{cccc}3&12&8&102\\(-2\times 3+6)&-2\times 12+18)&-2\times 6+6)&-2\times 102+162)\\0&15&5&85\end{array}\right]\)
Evaluating further, we have:
\(\left[\begin{array}{cccc}3&12&8&102\\0&-6&-6&-42\\0&15&5&85\end{array}\right]\)
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Complete Question:
The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix below represents the tickets sold and the total cost of the tickets for three performances.
\(\left[\begin{array}{cccc}3&12&8&102\\0&-6&-6&-42\\0&15&5&85\end{array}\right]\)
What is the result of performing the row operation (-2R₁ + R₂ → R₂) on this matrix?
Related Questions
1. Write the ratio as a fraction in simplest form. Show your work.
15 girls to 6 boys
2. Find the unit rate. Show your work.
405 rotation in 5 minutes
Answers
= (5 girls)/(2 boys)
:::::
(405 rotations)/(5 minutes) = (405 ÷ 5 rotations)/(5 ÷ 5 minutes) = (81 rotations)/minute
can i have more help and help me understand it
Answers
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
For the first equation,
h-3=9, we need to put all the knowns (numbers) on one side and all the variables on the other side. because equations are like a scale, if we do the same thing to both sides of the equation, the equation will still be true. for this equation, if we add 3 to both sides, we will get:
h-3+3=9+3
this can be simplified to:
h=12
this is your answer.
For the second equation,
we can apply the same principle for the first equation to the second equation.
1/2 x h = 10
can also be written as:
1/2 of h = 10
we can multiply both sides by 2 to get:
1h=20
or
h=20
What is "2x2?" I want to know.
Answers
4
Answer:
REaLLY YOU DON"T KNOW WHATS 2 X2 REALLY IT FOUR
Step-by-step explanation:
The volume of one of the sections of Tank A is 24 cubic feet. The volume of the other section of Tank A is 96 cubic feet. What is the total volume, in cubic feet, of Tank A? {dont solve this, This is to help with part B}
A. 4
b. 72
c. 120
d. 2304
Tank B has the same volume as Tank A. The volume of one section of Tank B is 45 cubic feet. What is the volume, in cubic feet, of the other section of Tank B? Enter your answer in the response box. {solve this}
Answers
Answer:
the answer is 141
may it help you
Find the radius given the linear speed and the rate of rotation.
v = 82.3 m/s
131 rev/min
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SOMEONE PLS HELP ME ASAPP!!!!!!!!!!!!!!!!!!
Farid made strawberry jam and raspberry jam. He made enough strawberry jam to fill 9 jars. If he made 1/4 as much raspberry jam as strawberry jam, how many jars will the raspberry jam fill?
Answers
Answer:
36 jars
Step-by-step explanation:
Since 1/4 is 9 jars, we need to multiply 4 to 9.
9 x 4 = 36
36 jars.
Please Hurry. I need this answer quickly please.
Answers
Answer:63
Step-by-step explanation:
multiply 72 by 7 then divide i by 8
(72×7)/8
=63
It's 63.
simplify the equation 7/8×72 multiple 7×9 solution is 63
When you encounter a part of a lesson or a math problem that makes you feel stuck or confused, what do you do? How do you help yourself get unstuck and back on track?
could u guys plz give me some ideas on what makes u feel stuck or confused? i already now what to do when i ned help.
Answers
Answer:
well when ever i feel stuck i just skip it and come back to it , one thing that makes me feel stuck is doing algebra
Step-by-step explanation:
Figure ABCD is shown on the coordinate plane. Suppose a graphic designer wants to dilate the figure so that the resulting image has a smaller area than figure ABCD. Describe a way the designer can achieve this type of dilation.
Answers
Answer:
Step-by-step explanation:
If the dilated image is smaller than the original, then 0<k<1.
Meaning the scale factor is less than one, but greater than zero.
You would mulitply each coordinate by this scale factor - to obtain the coordinates of the dilated figure.
Let's choose \(\frac{1}2}\).
In the original figure Point A = (-4,3) dilating by \(\frac{1}{2}\) results in A' being (-2, 1.5). When you multiply each cooordinate (-4,3) by one half.
Applying the scale factor of one half to the other coordinates - yields these results.
Point B (4,3) becomes Point B' (2, 1.5)
Point C (-4,-4) becomes Point C' (-2,-2).
Point D (4, -4) becomes Point D' (2,-2)
Answer:
K will equal something more than 0 and less than 1.
Explanation:
Multiply each side length by the same factor, a number between 0 and 1.
The table shows the average depths of several lakes.
a. Identify the outlier in the data set.
b. Determine how the outlier affects the mean, median, mode, and range of the data.
c. Tell which measure of center best describes the data with and without the outlier.
Answers
a. The outlier in the data set is Crater lake with a depth of 1,148 feet.
b. The outlier has a significant effect on the mean and range of the data but no effect on the median and mode.
c. The median and mode are measures of center that are less influenced by outliers, so they best describe the data with or without the outlier.
What does outlier means in Statistics?An outlier is a single data point that deviates significantly from the average value of a set of statistics. Outliers are exceptions that exist outside of individual population samples.
How does outlier affects the mean, median, mode, and range of the data?The mean is heavily influenced by outliers, so the outlier in this case increases the mean depth of the lakes. The range is the difference between the highest and lowest values, so the outlier also increases the range.
Which measure of center best describes the data with and without the outlier?Without the outlier, the median depth is 33.5 feet, which is closer to the majority of the depths in the data set. Therefore, the median is the best measure of center for this data set without the outlier. With the outlier included, the median depth is still 43 feet, and the mode is also 43 feet, so either measure could be used to describe the center of the data set.
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x < -9=?
plsssssssssss help
Answers
Answer:
any number below -9, or any regular number.
please give brainliest ☻︎
Explanation: The domain is anything under -9 () means not including
Infinity is never included
pls help i dont understand this topic!!
Answers
Answer:
tha answer is 4 yes i am right
Answer:
A, as you can see as the time texting increases, the time spent exercising goes closer and closer to 0. So the answer for that is decreases.
B, Negative, there is a negative correlation here
C, looking at the line of best fit, at the point x=4, y=5.5. Check your answer choices given. If there is a 5.5, you can put that. If not, put 6.
HOPE THIS HELPS
what is 15x5 whimsyyyyyy
Answers
Answer the question in the picture below
Answers
Answer:
b
Step-by-step explanation:
I'm Kind of stuck here help plz
Answers
please help me i will give brainliest to first person to anwser.
Answers
First we start with the formula for cylinders v=(pi)r(squared)h filled in Thats v=(3.14)(8 squared) (8) which brings us to the answer 1607.68 but you must round to the nearest tenth aka 1607.7
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
slope and y-intercept from graphs, I don't know if I am right and I don't know how to finish it even tho I have noted, can someone help me, can someone please answer this question, thank you!
Answers
Answer:
I think 5 is right and the slope is either -1/2 or -2/1
Band students are tested on, and required to pass, a certain number of scales during the year. As of today, Isaac has passed 9 scales, whereas his friend Audrey has passed 14 of them. Going forward, Isaac has committed to passing 3 scales per week, and Audrey has committed to passing 2 per week. At some point soon, the two friends will have passed the same number of scales. How long will that take? How many scales will that be?
In _ weeks, the friends will each have passed _ scales.
Answers
Answer: In 5 weeks, the friends will each have passed 24 scales
Step-by-step explanation:
let x be the number of weeks
9+3x=14+2x
x=5
Isaac practiced the piano three days last week for a total of 9 1/2 hours. On average, how many hours each day did Isaac practice?
A. 3 hours
B. 3 hours and 6 minutes
C. 3 hours and 10 minutes
D. 4 hours
Answers
SHOW YOUR WORK OR I WILL DELETE
Answers
All work and answers are shown in the attachment :) Hope this is accurate and helpful!
For each equation, what could you do first to each side of the equation so that there would be no fractions?
Select all the correct responses next to each equation.
\frac{3x-4}{8}=\frac{x+2}{3}3 x − 4 8 = x + 2 3
o Multiply each side by 8
o Multiply each side by 30
o Multiply each side by 48
o Multiply each side by 24
o Multiply each side by 60
o Multiply each side by 12
Answers
A locker combination has three nonzero digits, and digits cannot be repeated. If the first digit is 3, what is the probability that the next digit is odd?
A. 4/9
B. 1/5
C. 1/2
D. 5/9
Answers
Answer:
A 4/9
Step-by-step explanation:
Complete the equations with powers of 10.
Answers
Answer:
10³
10²
10¹
Step-by-step explanation:
411.92×1000=411,920
411.92×100=41,192
411.92×10=4,119.2
Answer:
10³
10²
10
Step-by-step explanation:
411.92 × 10³ = 411920
411.92 × 10² = 41192
411.92 × 10 = 4119.2
Question 5(Multiple Choice
HELP QUICKKKKKKJJ
Worth 1 points)
(04.02 LC)
Solve the following system of equations:
x + 3y = -4
X + 5y = -6
(1, 1)
(-1, 1)
(1, -1)
(-1,-1)
Answers
Y=(-6-x)/5
(-4-x)/3=(-6-x)/5
-20-5x=-18-3x
-5x+(3x)=-18+20
-2x=2
X=2/-2=-1
-1+5Y=-6
5Y=-6+1
5Y=-5
Y=-1
-x+-3y=4
x+5y=-6
2y=-2
y=-1
x+3(-1)=-4
x-3=-4
+3=+3
x=-1
If xx and y vary directly and y is 21 when x is 7, find y when x is 5
Answers
Answer:
y = 15
Step-by-step explanation:
We need to solve for k
y = x
21 = 7k Divide both sides by 7 to solve for k
3 = k
y = xk
y = 5(3)
y = 15
Answer: y = 15
Step-by-step explanation:
A regular polygon is shown, with the measure of one of its angles labeled 3x − 15.
8 sided regular polygon with one angle labeled 3 times x minus 15
Determine the value of x.
x = 40
x = 65
x = 50
x = 135
Answers
Answer:
x = 50
Step-by-step explanation:
The interior angle at each vertex of regular octagons are 135°.
3(50) - 15 = 135
For the polygon to be an 8 sided regular polygon like you said, the angle must equal 135, and so x must equal 50.
The required value of the x in the given expression is 50°.
Given that,
A regular polygon is shown, with the measure of one of its angles labeled 3x − 15.
What is a polygon?
A polygon is defined as a geometric shape that is composed of 3 or more sides these sides are equal in length, and an equal measure of angle at the vertex,
Examples of polygons, equilateral triangles, squares, pentagons, etc
Here,
For the octagon,
The angle of a vertex is 135°.
Equating the angles,
3x -15 = 135
3x = 135 + 15
3x = 150
x = 50
Thus, the required value of the x in the given expression is 50°.
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Which list orders the numbers from least to greatest?
Negative 2.4, negative 1.5, negative 2 and one-fourth, negative 3, negative 1 and one-eighth
A number line going from negative 4 to positive 4.
Negative 1 and one-eighth, negative 1.5, negative 2 and one-fourth, negative 2.4, negative 3
Negative 3, negative 2.4, negative 2 and one-fourth, negative 1.5, negative 1 and one-eighth
Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5
Negative 1.5, negative 1 and one-eighth, negative 2.4, negative 2 and one-fourth, negative 3
Answers
Negative 3, negative 2.4, negative 1.5, negative 2 and one-fourth, negative 1 and one-eighth
Hope my answer helps you✌️
Solve the following quadratic equations. Reduce all fractions and radicals, no decimals. 2(x^(2)-7)= 6 and -3(-y^(2)+5)= 39
Answers
Answer:
hellow
Step-by-step explanation:
sorry that you had to work so long that's the tough
at the end of 8 rounds he had 2 points after one more round he has 8 points express the change in points on the most recent round as a integer
Answers
2+x=8
X=6
Solve for x : x=6
What is the z axis? I know the x and y axis but not the z
Answers
Answer:
z axis is usually drawn vertically on a graph of at least three dimensions.It show the range of value of variable dependent