40 tickets were sold for students and 110 tickets for adults.
What is the equation in two variables?
If we consider a,b, and c as three real numbers. The equation in two variables is expressed as ax + by = c. The x and y are known as variables and can be calculated if two equations are given.
It is given that tickets to a school play cost $3 for a student and $8 for adults. Let the number of students be x and the number of adults is y.
On opening night $1000 was collected, so we can express it as:
\(3x + 8y=1000\)
Also, 150 tickets were sold, so we can express it as:
\(x+y= 150\)
We have to solve these two equations for x and y:
Multiply \(x + y = 150\) by 3.
\(3x + 3y = 450\)
After subtracting the two expressions:
\(3x -3x + 8y - 3y=1000-450\)
\(5y=550\)
\(y=110\)
\(x+110=150\)
\(x=40\)
So, there were 40 tickets sold for students and 110 tickets for adults.
Learn more about equations in two variables here:
https://brainly.com/question/24085666
#SPJ1
Q1: Find the values of 503 X 503
Bhd
Answer:
253009
Step-by-step explanation:
503^2=253009
Question 3) [5 Points]
A certain blood test is 99.5% effective at detecting Foreign Bloodborne Pathogens (such as the hepatitis
virus) in human blood.
●
●
If two people who take this test are selected at random, what is the probability both tests
correctly detect a Foreign Bloodborne Pathogen?
If ten people who take this test are selected at random, what is the probability all tests correctly
detect a Foreign Bloodborne Pathogen?
If 1,000 people who take this test are selected at random, what is the probability at least one
test FAILS to detect a Foreign Bloodborne Pathogen?
If a certain blood test is 99.5% effective at detecting Foreign Bloodborne Pathogens:
a. The probability that both tests correctly detect a Foreign Bloodborne Pathogen is approximately 0.990.
b. The probability that all ten tests correctly detect a Foreign Bloodborne Pathogen is approximately 0.951.
c. The probability that at least one test fails to detect a Foreign Bloodborne Pathogen is 0.993.
How to find the probability?The probability that the blood test correctly detects a Foreign Bloodborne Pathogen is 0.995, and the probability that it fails to detect a Foreign Bloodborne Pathogen is 0.005.
1. Probability that both tests correctly detect a Foreign Bloodborne Pathogen:
The probability of both tests correctly detecting the pathogen is the product of the probability of the first test correctly detecting the pathogen and the probability of the second test correctly detecting the pathogen. Since the two tests are independent, we can multiply the probabilities. Therefore, the probability of both tests correctly detecting the pathogen is:
0.995 x 0.995 = 0.990025
So, the probability that both tests correctly detect a Foreign Bloodborne Pathogen is approximately 0.990.
2 Probability that all ten tests correctly detect a Foreign Bloodborne Pathogen:
The probability that all ten tests correctly detect a Foreign Bloodborne Pathogen is the product of the probabilities of each individual test correctly detecting the pathogen, since each test is independent. Therefore, the probability of all ten tests correctly detecting the pathogen is:
0.995^10 ≈ 0.951
So, the probability that all ten tests correctly detect a Foreign Bloodborne Pathogen is approximately 0.951.
3. Probability that at least one test fails to detect a Foreign Bloodborne Pathogen:
The probability that at least one test fails to detect a Foreign Bloodborne Pathogen is the complement of the probability that all 1,000 tests correctly detect the pathogen. Therefore, the probability that at least one test fails to detect a Foreign Bloodborne Pathogen is:
1 - 0.995^1000 ≈ 0.993
So, the probability that at least one test fails to detect a Foreign Bloodborne Pathogen is approximately 0.993.
Learn more about probability here:https://brainly.com/question/24756209
#SPJ1
Saturday morning Brett made one batch of orange juice with 1 cup of concentrate and 4 cups of water. What percent of the batch was water? Show your work or explain your reasoning to justify your answer.
Answer:
80% of the batch is water.
Step-by-step explanation:
If 1/5 of the batch is concentrate, that leaves 4/5 of the batch being water. 4/5 simplifies out to .8, which is 80%.
what is the soloution to the equation 3x+4=7x-4
Step-by-step explanation:
3x+4=7x-4
add 7x to each side of equation 4x+3x+-7x=-4x+7x+-7x
combine like terms 7x+-7x=0
4+ -4x =-4 +0
4+-4x= -4
add -4 to each side of equation 4+ -4 +-4x=-4+-4
combine like terms -4 +4=0
0+ -4x = -4+ -4
combine like terms -4+-4=-8
-4x =-8
divide each side by-4
x=2
simplifying
x = 2
write the equation of the circle in standard form with the given characteristics: endpoints of a diameter: (-14, -3) and (-4, -1)
The equation of the circle with endpoints of a diameter at (-14, -3) and (-4, -1) in standard form is (x + 9)² + (y + 2)² = 65/4, where the center is (-9, -2) and the radius is √(65)/2.
To find the equation of a circle in standard form, we need to know the center and the radius of the circle.
The midpoint of the diameter is the center of the circle, which can be found using the midpoint formula:
Midpoint = ((x1 + x2)/2, (y1 + y2)/2)
Midpoint = ((-14 + (-4))/2, (-3 + (-1))/2)
Midpoint = (-9, -2)
The radius can be found by using the distance formula to find the distance between one of the endpoints and the center:
r = √((x2 - x1)² + (y2 - y1)²)/2
r = √((-4 - (-9))² + (-1 - (-2))²)/2
r = √(65)/2
Putting it all together, the equation of the circle in standard form is:
(x + 9)² + (y + 2)² = 65/4
Learn more about circle here: brainly.com/question/29142813
#SPJ4
Signature of the Principle investigator on the final proposal implies his responsibility for the following except
The signature of the Principal Investigator on the final proposal does not imply responsibility for the availability of funding or the financial aspects of the project.
The signature of the Principal Investigator (PI) on the final proposal does not imply responsibility for certain aspects of the project beyond their control or expertise. While the PI plays a crucial role in leading and overseeing the research project, there are certain areas for which they may not bear direct responsibility.One aspect the PI may not be responsible for is the availability of funding. Although they may have been involved in securing the initial funding or writing the budget proposal, the final decision and availability of funds typically lie with funding agencies, institutions, or sponsors. The PI's signature on the proposal signifies their commitment to the project but does not guarantee funding.Additionally, the PI may not be accountable for the technical or scientific success of every aspect of the project. Research projects often involve interdisciplinary collaborations and multiple team members who contribute their expertise. The PI's signature signifies their leadership and overall responsibility, but they rely on the expertise and contributions of other team members for specific tasks and outcomes.Furthermore, the PI may not bear sole responsibility for external factors that can impact the project, such as changes in regulations, unforeseen events, or external market conditions. While they may adapt the project's direction and approach as needed, these external factors are beyond their direct control.In summary, the signature of the Principal Investigator on the final proposal does not imply responsibility for funding availability, technical success of every aspect, or external factors that may influence the project. The PI's role is primarily centered around leadership, coordination, and overall project management.The complete question should be What does the signature of the Principal Investigator on the final proposal NOT imply responsibility for?
For more questions on financial
https://brainly.com/question/30620783
#SPJ8
Find the area of this irregular shape , will give brainliest
Answer:
163
Step-by-step explanation:
you should cut the shape into smaller pieces to solve
btw i cant show my work, because i'm really poor and cant afford paper to write on.
What is y=x +1 and y=2x-1
Answer:
Y=X+1=2+1=3
Step-by-step explanation:
{
X
=
2
Y
=
3
Explanation:
Combining the two equations, we find:
2
X
−
1
=
Y
=
X
+
1
Subtract
X
from both ends to get:
X
−
1
=
1
Add
1
to both sides to get:
X
=
2
Then:
Y
=
X
+
1
=
2
+
1
=
3
The Empire State Building is 1,454 feet tall (if you include the lightning rod). If a piece of gum is dropped from the top, how many seconds will it take for the gum to hit the street assuming no air resistance?
gravity is 32.17 ft/sec
1454 ÷ 32.17 = 45.20 seconds = answer
Answer:9.5
Step-by-step explanation:
Eight upright dominos of increasing height are lined up to be knocked down. The dominos are numbered 0 to 7. The smallest domino, #0, is 4.00 cm tall and will be toppled by a person to start the chain reaction. Each subsequent domino is 12% taller than the one before. What is the height of domino #7?
The height of domino #7 is approximately 6.89 cm tall.
How to solve for the heightThe formula for the nth term of a geometric progression is:
\(a_n = a * r^(^n^-^1^)\)
where:
a is the first term (the height of the smallest domino, 4.00 cm),
r is the common ratio (the growth rate, 1.12), and
n is the term number (for domino #7, n = 7 + 1 = 8, because the sequence starts with domino #0).
Let's plug these values into the formula:
\(a_8 = 4.00 cm * (1.12)^7\)
(Note that we're using 7, not 8, because the first domino is #0, not #1.)
Now, compute the value:
\(a_8 = 4.00 cm * (1.12)^7\)
= 6.89 cm
So, domino #7 is approximately 6.89 cm tall.
Read more on height here https://brainly.com/question/1739912
#SPJ1
What is -(9) fourth power
Answer:-9 to the fourth power is -6561
Step-by-step explanation: You would have to do 9 times 9 times 9 times 9 and that would equal 6561 then you would add the negative.So therefore the answer is -6561.
Please give brainliest if right.
Answer:
-6561
Step-by-step explanation:
\(-9^4 = -9 \times -9 \times -9 \times -9 = -6561\)
Distributive Property
475x9
Step-by-step explanation:
4275 may answer hope its correct
NO EXPLANATION NEEDED BRAINLIEST QUESTION ON PIC TY⚠️‼️
Answer:
y=10;-10
Step-by-step explanation:
100 is a square number. We know that y can be a real number.
√100=10
y can either be 10 or -10 since 10²=100 and (-10)²=100.
Note: Enter your answer and show all the steps that you use to
solve this problem in the space provided.
You have a credit card with a balance of $1,367.90 at a 9.5%
APR. You pay $400.00 each month on the due date until the
card is paid off. How many months does it take to pay off the
card, and what is the total amount paid including interest?
Be sure to include in your response:
• the answer to the original question
. the mathematical steps for solving the problem
demonstrating mathematical reasoning
Given statement solution is :- It takes 4 months to pay off the card, and the total amount paid, including interest, is $1600.
To determine the number of months it takes to pay off the credit card and the total amount paid, including interest, we can follow these steps:
Step 1: Calculate the monthly interest rate.
The APR (Annual Percentage Rate) is given as 9.5%. To find the monthly interest rate, we divide this by 12 (the number of months in a year):
Monthly interest rate = 9.5% / 12 = 0.0079167
Step 2: Determine the monthly payment.
The monthly payment is given as $400.
Step 3: Calculate the interest and principal paid each month.
The interest paid each month can be calculated by multiplying the monthly interest rate by the current balance.
Principal paid = Monthly payment - Interest paid
Step 4: Track the remaining balance each month.
Starting with the initial balance of $1,367.90, subtract the principal paid each month to determine the new balance.
Step 5: Repeat Steps 3 and 4 until the balance reaches zero.
Continue calculating the interest and principal paid each month, updating the balance, until the remaining balance becomes zero.
Step 6: Determine the total number of months and the total amount paid.
Count the number of months it takes to reach a balance of zero. Multiply the number of months by the monthly payment ($400) to find the total amount paid.
Let's calculate the number of months and the total amount paid, including interest:
Month 1:
Interest paid = 0.0079167 * $1,367.90 = $10.84
Principal paid = $400 - $10.84 = $389.16
New balance = $1,367.90 - $389.16 = $978.74
Month 2:
Interest paid = 0.0079167 * $978.74 = $7.75
Principal paid = $400 - $7.75 = $392.25
New balance = $978.74 - $392.25 = $586.49
Month 3:
Interest paid = 0.0079167 * $586.49 = $4.64
Principal paid = $400 - $4.64 = $395.36
New balance = $586.49 - $395.36 = $191.13
Month 4:
Interest paid = 0.0079167 * $191.13 = $1.51
Principal paid = $400 - $1.51 = $398.49
New balance = $191.13 - $398.49 = -$207.36 (Paid off)
It takes 4 months to pay off the credit card. Now, let's calculate the total amount paid, including interest:
Total amount paid = 4 * $400 = $1600
Therefore, it takes 4 months to pay off the card, and the total amount paid, including interest, is $1600.
For such more questions on Credit Card Payoff
https://brainly.com/question/26867415
#SPJ8
It takes Christina 2 minutes to read one page of her 250 page book. Which of the following represents the appropriate domain and range for a function relating the total time she has spent reading the book, x, and the number of pages she has read, y?
Answer:
Domain: 0<=x<=500
Range: 0<=y<=250
Step-by-step explanation:
I'm not sure if this is what you asked for. She spend 2 minutes reading 1 page, there are 250 pages, therefore: 250*2=500
the range is simply the total pages
Hope this help!
3. Leeland can eat 1 hotdog in 20 minutes. What is his unit rate in hotdogs
per hour?
A 1/2 a hotdog per hour
B 1 hotdogs per hour
C 2 hotdogs per hour
D hotdogs per hour
Answer:
Hi how are you doing today Jasmine
Answer:
i think more then the awnsers that are givin or im just being a dummy
Step-by-step explanation:
Show that the equation 2sinxtanx+3=0 can be expressed as 2cos^(2)x-3cosx-2=0
The equation 2sin(x)tan(x) + 3 = 0 has been proved to equal 2cos²(x) - 3cos(x) - 2 = 0
How to prove the equationsFrom the question, we have the following equation that can be used in our computation:
2sinxtanx+3=0
Rewrite as
2sin(x)tan(x) + 3 = 0
Express tan(x) as tan(x) = sin(x)/cos(x)
So, we have
2sin²(x)/cos(x) + 3 = 0
Multiply through by cos(x)
2sin²(x) + 3cos(x) = 0
Express sin²(x) as 1 - cos²(x)
So, we have
2(1 - cos²(x)) + 3cos(x) = 0
Expand
2 - 2cos²(x) + 3cos(x) = 0
Multiply through by -1
-2 + 2cos²(x) - 3cos(x) = 0
Rearrange the terms
2cos²(x) - 3cos(x) - 2 = 0
Hence, the equation has been proved
Read more about trigonometry equations at
https://brainly.com/question/24349828
#SPJ1
The system created by y = 1/2 x - 6 and y = 8x - 6 has a solution of (0, -6).
True
False
Use pounds or tons. . The weight of a truck is about 3_tons 10. Shane drinks 3 pints of milk in a week. How many cups of milk does Shane drink in a week? Extended Response (Question 11: 2 points, Question 12:3 Solve. Show your work.
The standard rate of conversion is
\(1\text{ Liquid pint=}2\text{ cups}\)Therefore if Shane drinks 3 pints of milk in a week, then;
\(\begin{gathered} 1\text{ Pint=2 cups} \\ 3\text{ pints=2x(3) cups } \\ 3\text{ pints=6 cups} \end{gathered}\)A box of tangerines that weighs 5 pounds costs $4.25.
What is the cost per pound?
Answer:
$0.85
Step-by-step explanation:
$4.25 divided by 5 pounds equals $0.85 per pound.
Answer:
$0.85
Step-by-step explanation:
Find the unit rate.
4.25/5=x/1
Solve for x. X= 4.25/5=0.85
So 1 lb of tangerines costs $0.85.
Jessica has $42.60 in her piggy bank. She spent 1/3 of her money at the movies and made $24.50 babysitting her cousins. How much money does she have now? (HOW DID YOU GET YOUR ANSWER PLEASE SHOW YOUR WORK!!)
A. 52.90
B. 1.04
C. 12.84
D. 458
E. 5x-8y+7
F. 25.30
Answer:
a
Step-by-step explanation:
i took the quiz
Solve y = x + 8 for x.
A. x = y + 8
B. x=y - 8
C. x= -y + 8
D. x= -y - 8
Can anyone help me on this?
Answer:
A
Step-by-step explanation:
We know that this is the same as substituting a for x and multiplying the entire expression by -1.
\(f(a) = \frac{2a}{a - 1} \)
\( - f(a) = \frac{ - 2a}{a + 1} \)
Find the radius of a pencil with a volume of 110 π mm³, a cone height of 3mm, and a cylinder height of 10 mm.
The radius of the pencil is 3.32mm
How to determine the radius of the pencilThe formula for determining the volume of a cylinder is expressed as;
V = πr²h
Given that the parameters are;
V is the volume of a cylinderπ takes the value 3. 14 or 22/7r is the radius of the cylinderh is the height of the cylinderFrom the information given, we have that;
The volume of the cylinder = 110 π mm³
The height of the cylinder = 10mm
Now, substitute the values, we get
110π = πr² × 10
Multiply the values
110π = 10πr²
Divide both sides by the coefficient of r², we get;
r² = 110π/10
r² = 11
Find the square root of both sides
r = 3. 32mm
Hence, the value is 3.32mm
Learn about cylinders here:
https://brainly.com/question/76387
#SPJ1
Amanda palm 12 gallons of water out of her pool this was done over a period of two minutes at a constant rate what was the change in the amount of water in the pool each minute
8 Solve for C. 19 14 C C = [? ]° final answer Round your to the nearest tenth. Law of Cosines: c² = a² + b² - 2ab-cosC Measure of Angle C Enter
The value of angle C to the nearest tenth is 21.6°
What is cosine rule?The Cosine Rule says that the square of the length of any side of a given triangle is equal to the sum of the squares of the length of the other sides minus twice the product of the other two sides multiplied by the cosine of angle included between them.
c² = a² + b² - 2ab cosC
8² = 14² + 19² - 2 × 14 × 19 cos C
64 = 196+ 361 - 532cosC
64 = 557 - 532 cosC
532cos C = 557 -64
532cos C =
cosC = 493/532
cos C = 0.93
C = 21.6°( nearest tenth)
Therefore the value of angle C is 21.6°
learn more about cosine rule from
https://brainly.com/question/23720007
#SPJ1
The left and right page numbers of an open book are two consecutive integers whose sum is 533. Find the page numbers
Answer:
The page numbers are 266 and 267
Step-by-step explanation:
I divided 533 by 2
Then get 266.5
Then guessed and checked which pages around that value added up to 533
and you get pages 266 and 267
which expression represents n less than the product of 5 and m?
Answer:
5m-n
Step-by-step explanation:
An arrow is shot from 3 ft above the top of a hill with a vertical upward velocity of 108 ft/s. If it strikes the plain below after 9.5 s, how high is the hill?
If the arrow is launched at t0, then write an equation describing velocity as a function of time?
The height of the hill is approximately 25.73 ft. Where v0 is the initial velocity (108 ft/s), g is the acceleration due to gravity \((-32.2 ft/s^2)\),
To find the height of the hill, we can use the formula for the vertical position of an object under constant acceleration:
h = h0 + v0t + 1/2at^2
where h is the final height, h0 is the initial height, v0 is the initial velocity, t is the time, and a is the acceleration due to gravity (-32.2 ft/s^2).
In this case, we are given that the initial height h0 is 3 ft, the initial velocity v0 is 108 ft/s, and the time t is 9.5 s. We want to find the height of the hill, which we can denote as h_hill. The final height is the height of the plain, which we can denote as h_plain and assume is zero.
At the highest point of its trajectory, the arrow will have zero vertical velocity, since it will have stopped rising and just started to fall. So we can set the velocity to zero and solve for the time it takes for that to occur. Using the formula for velocity under constant acceleration:
v = v0 + at
we can solve for t when v = 0, h0 = 3 ft, v0 = 108 ft/s, and a = -32.2 ft/s^2:
0 = 108 - 32.2t
t = 108/32.2 ≈ 3.35 s
Thus, it takes the arrow approximately 3.35 s to reach the top of its trajectory.
Using the formula for the height of an object at a given time, we can find the height of the hill by subtracting the height of the arrow at the top of its trajectory from the initial height:
h_hill = h0 + v0t + 1/2at^2 - h_top
where h_top is the height of the arrow at the top of its trajectory. We can find h_top using the formula for the height of an object at the maximum height of its trajectory:
h_top = h0 + v0^2/2a
Plugging in the given values, we get:
h_top = 3 + (108^2)/(2*(-32.2)) ≈ 196.78 ft
Plugging this into the first equation, we get:
h_hill = 3 + 108(3.35) + 1/2(-32.2)(3.35)^2 - 196.78
h_hill ≈ 25.73 ft
If the arrow is launched at t0, the equation describing velocity as a function of time would be:
v(t) = v0 - gt
For such more questions on velocity
https://brainly.com/question/25749514
#SPJ8
Plz help I will give brainliest to the best answer! Plz plz help btw only question 2
Answer:
The area would be 87.5
Step-by-step explanation: