The equation that models the amount of water in the tank after x minutes is:
y = -3x + 9
How many liters are there after x minutes?We know that the tank contains 9 liters of water, and it loses water at a constant rate of 3 liters per minute.
Then we can model the amount of water y in the tank after x minutes with a linear equation where the y-intercept is 9 and the rate of change is -3 (the amount it loses per unit of x)
Then the equation is:
y = -3x + 9
Learn more about linear equations at:
https://brainly.com/question/1884491
#SPJ1
A hotel sets up tables for a conference for 156 people if each tables seats 12 people, how many tables will be needed?
Can I please get help with this?
\(~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$4000\\ r=rate\to 2.7\%\to \frac{2.7}{100}\dotfill &0.027\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{\underline{semi-annually}, thus twice} \end{array}\dotfill &2\\ t=years\dotfill &10 \end{cases}\)
\(A = 4000\left(1+\frac{0.027}{2}\right)^{2\cdot 10}\implies A=4000(1.0135)^{20} \implies \boxed{A \approx 5230.40} \\\\[-0.35em] ~\dotfill\)
\(~~~~~~ \textit{Annual Percent Yield Formula} \\\\ ~~~~~~~~~~~~ \left(1+\frac{r}{n}\right)^{n}-1 ~\hfill \begin{cases} r=rate\to 2.7\%\to \frac{2.7}{100}\dotfill &0.027\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{\underline{semi-annually}, thus twice} \end{array}\dotfill &2 \end{cases} \\\\\\ \left(1+\frac{0.027}{2}\right)^{2}-1\implies 1.0135^2-1\approx 0.02718 ~~ \approx ~~ \stackrel{ 0.02718\times 100 }{\boxed{2.718~\%}}\)
*WILL GIVE BRAINLIEST FOR THE BEST ANSWER IF YOU DONT KNOW IT DONT ANSWER*
3r = 6r − 6
r =
Answer:
2
Step-by-step explanation:
3r-6r=-6
-3r=-6
3r=6
r=2
Could you please mark me Brainliest? Thanks! ;)
r = 2
3r=6r-6=
3r=2
r=2
Sorry if i'm wrong I'm not good at math
~Jane~
In a sample of 800 adults, 242 said that they liked sugar cereals. Three adults are selected at random without replacement. Find the probability that all three like sugar cereals.
Answer:
\(P(A) = 0.0274\)
Step-by-step explanation:
Given
\(n = 800\) --- Population
\(A = 242\) --- those that liked sugar cereals
Required
Probability that three selected like sugar cereals
The probability that the first adult selected likes sugar cereals is:
\(P(A_1) = \frac{242}{800}\)
The probability that the second adult selected likes sugar cereals is:
\(P(A_2) = \frac{242-1}{800-1} = \frac{241}{799}\)
We subtracted 1 because it is a probability without replacement
Similarly:
\(P(A_3) = \frac{241-1}{799-1} = \frac{240}{798}\)
The required probability is calculated as follows:
\(P(A) = P(A_1) * P(A_2) * P(A_3)\)
\(P(A) = \frac{242}{800} * \frac{241}{799} * \frac{240}{798}\)
\(P(A) = \frac{242*241*240}{800*799*798}\)
\(P(A) = \frac{13997280}{510081600}\)
\(P(A) = 0.0274\)
A family-size pizza is $32 and costs 4 times as much as a small pizza. Steve buys two family-size pizzas and 4 small pizzas. How much does he spend in all?
A. $64
B. $86
C. $80
D. $96
What number is 1/2% of 96? Round the answer to the
nearest hundredth if necessary.
Answer:
48
Step-by-step explanation:
some adults and children are watching a musical there are n children there are 25 fewer adults
According to the concept of algebraic expression and arithmetic, the correct answers are A) Number of adults = N - 25. B) Number of adults when N = 124: 124 - 25 = 99
A) Let's denote the number of children as N. Since there are 25 fewer adults than children, the number of adults can be expressed as N - 25.
B) If there are 124 children, we substitute N with 124 in the expression from part A. Thus, the number of adults would be 124 - 25 = 99.
To arrive at these answers, we used the given information that there are "N" children and 25 fewer adults than children. By substituting the value of N, we determined the number of adults in terms of N and then calculated the specific number of adults when N is equal to 124.
Note: The given question is incomplete. The complete question is:
Some adults and children are watching a musical. there are 'N' number of children. There are 25 fewer adults than children.
A) find the number of adults in terms of 'N'.
B) if there are 124 children how many adults are there?
For more questions on algebraic expression:
https://brainly.com/question/29333936
#SPJ8
A theater sold 1,802 tickets for
their Saturday evening
performance. This was 635 more
than the number of tickets sold
for the matinee performance. If
tickets cost $75 each, find the
total ticket sales for two
performances.
Answer:
the answer would be 2,969 also i think the cost of tickets is pretty useless
Step-by-step explanation:
Answer:2,969
Step-by-step explanation:
(Giving Brainliest) A skateboarding ramp is 10 in. high and rises at an angle of 21°. How long is the base of the ramp? Round to the nearest inch.
Answer:
26 inches
Step-by-step explanation:
Tan = opp/adj = height/base
tan 21 = 10/base
base = 10/tan21
base = 26.050890646938015
Rounded
26 inches
Answer:
26 in. to nearest inch.
Step-by-step explanation:
tan 21 = 10 / L where L is the length of the base.
L = 10 / tan 21
= 26.05 in.
when finding the area of a circle, is it 3.14 r x2 or 3.14 r²?
The area of a circle is given by the formula,
\(Area\text{ = }\pi r^2\)Where,
\(\pi\text{ = 22/7 or }\pi\text{ = 3.14}\)Thus the generalized form is,
\(Area\text{ = 3.14r}^2\text{ units}^2\)
What is
4 + (5² - 2³) =
Answer:
Step-by-step explanation:
4+(25-512)=-487+5=-482
The value of the given expression by basic number system law will be 21.
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.
Any of the multiple sets of symbols and the guidelines for utilizing them to represent numbers are included in the Number System.
As per the given expression,
4 + (5² - 2³)
By basic number system concepts,
⇒ 4 + (25 - 8)
⇒ 4 + 17
⇒ 21
Hence "The value of the given expression by basic number system law will be 21".
For more about the number system,
https://brainly.com/question/22046046
#SPJ6
What is the range of the function? f(x)=3^x−1−2
The range of the equation f(x) = 3ˣ ⁻ ¹ - 2 is y > -2
Calculating the range of the equation?From the question, we have the following parameters that can be used in our computation:
f(x) = 3ˣ ⁻ ¹ - 2
The above equation is an exponential function
The rule of an exponential function is that
The domain is the set of all real numbersHowever, the range is always greater than the constant termIn this case, it is -2
So, the range is y > -2
Read more about range at
brainly.com/question/27910766
#SPJ1
The equation y = 18x describes the amount of money Spongebob earns as a fry cook, where x is the
number of hours he works and y is the amount of money he earns. Show work. Complete sentence.
The table shows the amount of money Squidward earns as a cashier for different numbers of hours worked.
Squidward’s Earnings
Time (h) 3 5 8 10
Money earned
($) 48 80 128 160
(a) How much money does Spongebob earn per hour?
(b) How much money does Squidward earn per hour?
pls help and explain
Answer:
a. 18 dollars per hour
b. 16 dollars per hour
Step-by-step explanation:
for a, 18 is the slope of y=18x, meaning spongebob earns 18 dollars per hour
for b, since it seems like squidward earns 32 dollars every 2 hours, it can be guessed that he earns 16 dollars per hour, since 32/2 = 16
what is the answer for 6x + 3(x-2)
Answer:
9x - 6
Hope this helps! <3
(If you need a step by step lmk)
Answer:
6x+3(x-2)
6x+3x-6
9x-6
You play a game on your phone. For every correct move you make you receive 50 points. For every second that it takes you to complete the game, you lose 3 points. You complete the game in 2 minutes 45 seconds using 35 correct moves. What is your score?
Answer:
Step-by-step explanation:
what
Find a point-slope form for the line with slope 1/5 and passing through the point (-7,-3)
Graph $y=5x-2$y=5x−2 . LineMove UndoRedoReset
y = 5x - 2
graph:
(attached)
I am stuck on this question it was can you add 4+2x to get 6x
Answer:
No you can't.
Step-by-step explanation:
4 is an integer, and 2x isn't so you can't add them together. If 4 was 4x or 2x was 2, then you'd get 6, but you can't add them. Hope this helps :)
Given the function f(x) = 0.5|x - 41-3, for what values of x is f(x) = 7?
x = -24, x = 16
x= -16, x = 24
x=-1, x = 9
x = 1, x = -9
The values of x for which f(x) = 7 are x = 61 and x = 21.
To find the values of x for which f(x) = 7, we can set up the equation and solve for x.
The given function is f(x) = 0.5|x - 41| - 3.
Setting f(x) equal to 7, we have:
0.5|x - 41| - 3 = 7.
First, let's isolate the absolute value term:
0.5|x - 41| = 7 + 3.
0.5|x - 41| = 10.
To remove the absolute value, we can consider two cases:
Case: (x - 41) is positive or zero:
0.5(x - 41) = 10.
Multiplying both sides by 2 to get rid of the fraction:
x - 41 = 20.
Adding 41 to both sides:
x = 61.
So x = 61 is a solution for this case.
Case: (x - 41) is negative:
0.5(-x + 41) = 10.
Multiplying both sides by 2:
-x + 41 = 20.
Subtracting 41 from both sides:
-x = -21.
Multiplying both sides by -1 to solve for x:
x = 21.
So x = 21 is a solution for this case.
Therefore, the values of x for which f(x) = 7 are x = 61 and x = 21.
for such more question on values
https://brainly.com/question/11546044
#SPJ8
What is 9(-7)?
I don't even know this
-63. Hope this helps!
Can have brainliest?
Answer:
-63
Step-by-step explanation:
If you know how to multiply it without the negative then you could take that answer and then put a negative at the beginning.
What would 2y + y be? Would it just be 2y or would it be 3y? Help
Answer: 2y+y would be 3y
Step-by-step explanation:hope it helps :)
Are quadrilaterals ABCD and EFGH similar?
Yes, quadrilaterals ABCD and EFGH are similar because a translation of (x + 1, y + 3) and a dilation by the scale factor of 3 from point D′ map quadrilateral ABCD onto EFGH.
What are quadrilaterals?The properties of quadrilaterals are;
Number of sides is equal to fourNumber of vertices is equal to fourNumber of diagonals is twoSum of all interior angles is equal to 360 degreesFrom the information given, we can see that;
ABCD and EFGH are similar because a translation of (x + 1, y + 3) and a dilation by the scale factor of 3
Learn more about quadrilaterals at: https://brainly.com/question/23935806
#SPJ1
The residual plot shows the residuals for the day of the month and the amount in Kali’s checking account. Which statement best assesses the linearity of the relationship between the day of the month and account balance if the scatterplot appears to be reasonably linear?
A) Because the residual plot has an obvious pattern, and the scatterplot appears linear, it is appropriate to use the line of best fit to predict the account balance based on the day of the month.
B) Because the residual plot has an obvious pattern, and the scatterplot appears linear, it is not appropriate to use the line of best fit to predict the account balance based on the day of the month.
C) Because the residual plot has no obvious pattern, and the scatterplot appears linear, it is appropriate to use the line of best fit to predict the account balance based on the day of the month.
D) Because the residual plot has no obvious pattern, and the scatterplot appears linear, it is not appropriate to use the line of best fit to predict the account balance based on the day of the month.
The best assessment of the linearity of the relationship between the day of the month and account balance would be "Because the residual plot has no obvious pattern, and the scatterplot appears linear, it is appropriate to use the line of best fit to predict the account balance based on the day of the month."The correct answer is option C.
When assessing linearity, it is important to examine both the scatterplot and the residual plot. The scatterplot is used to visualize the relationship between the variables, while the residual plot helps us assess the appropriateness of a linear model by examining the pattern of the residuals (the differences between observed and predicted values).
If the scatterplot appears reasonably linear, it suggests that there is a linear relationship between the variables. In this case, since the scatterplot appears linear, it supports the use of a linear model to predict the account balance based on the day of the month.
Furthermore, the residual plot is used to check for any patterns or systematic deviations from the line of best fit. If the residual plot exhibits no obvious pattern and the residuals appear randomly distributed around zero, it indicates that the linear model captures the relationship adequately.
Therefore, if the residual plot shows no obvious pattern, it provides further evidence in favor of using the line of best fit to predict the account balance based on the day of the month.
In conclusion, when the scatterplot appears linear and the residual plot shows no obvious pattern, it is appropriate to use the line of best fit to predict the account balance based on the day of the month.
For more such questions on linearity,click on
https://brainly.com/question/2030026
#SPJ8
Answer:
person above
Step-by-step explanation:
the obvious
Find the area of the rectangle shown
7 1/2 ft
5 1/4ft
Answer:
39 3/8 ft ^2
Step-by-step explanation:
To find the area of a rectangle, multiply the length times the width.
A = l*w
= 7 1/2 * 5 1/4
Change the mixed numbers to improper fractions.
A = 15/2 * 21/4
=315/8
Change back to a mixed number.
8 goes into 315 39 times with 3 left over.
= 39 3/8
Answer:
Area = 39.375 ft²
(you can round to 39.4)
Step-by-step explanation:
Find the area of the rectangle shown
7 1/2 ft
5 1/4ft
7 1/2 = 7.5 ft
5 1/4 = 5.25 ft
Area = L x W
Area = 7.5 x 5.25
Area = 39.375
What values of x
and y
satisfy the system of equations {8x+9y=−36 x+7y=1}
Enter your answer as an ordered pair, like this: (42, 53)
If your answer includes one or more fractions, use the / symbol to separate numerators and denominators. For example, if your answer is (4253,6475),
enter it like this: (42/53, 64/75)
If there is no solution, enter "no"; if there are infinitely many solutions, enter "inf."
The solution to the system of equations is (x, y) = (-261/47, 44/47) as an ordered pair.
To solve the given system of equations:
Equation 1: 8x + 9y = -36
Equation 2: x + 7y = 1
We can use the method of substitution or elimination to find the values of x and y. Let's use the method of substitution:
From Equation 2, we can solve for x:
x = 1 - 7y
Substituting this value of x into Equation 1:
8(1 - 7y) + 9y = -36
8 - 56y + 9y = -36
-47y = -44
y = 44/47
Substituting the value of y back into Equation 2 to find x:
x + 7(44/47) = 1
x + 308/47 = 1
x = 1 - 308/47
x = (47 - 308)/47
x = -261/47
Therefore, as an ordered pair, the solution to the system of equations is (x, y) = (-261/47, 44/47).
Learn more about system of equation on:
https://brainly.com/question/12526075
SET 1: Find the area of each circle below. 14m
Thanks
Answer:
The area of the circle is 615.44 or 196pi
Step-by-step explanation:
The formula for the area of a circle is pi*r^2=3.14*14^2
which is equal to 615.44m^2
If you are used to calculating in terms of pi, you would use 196pi
x = 13, ¿cuál ecuación es verdadera?
3(18 - x) = 67
4(9x) = 23
2(x-3)=7
5(x-9) = 20
When x = 13, the equation that is true is option D) 5(x - 9) = 20.
To determine which equation is true when x = 13, we can substitute the value of x into each equation and see which equation holds true. Let's go through each option:
A) 3(18 - x) = 67
Substituting x = 13:
3(18 - 13) = 67
3(5) = 67
15 = 67
The equation is not true when x = 13. Therefore, option A is false.
B) 4(9x) = 23
Substituting x = 13:
4(9*13) = 23
4(117) = 23
468 = 23
Again, the equation is not true when x = 13. Therefore, option B is also false.
C) 2(x - 3) = 7
Substituting x = 13:
2(13 - 3) = 7
2(10) = 7
20 = 7
Once again, the equation is not true when x = 13. Therefore, option C is false as well.
D) 5(x - 9) = 20
Substituting x = 13:
5(13 - 9) = 20
5(4) = 20
20 = 20
Finally, the equation is true when x = 13. Therefore, option D is true.
For more such questions on equation visit:
https://brainly.com/question/30451972
#SPJ8
Note: the translated questions is
X = 13, which equation is true?
Use the net to find the surface area of the prism
8 ft
15 ft
8 ft
15 ft
9 ft
Answer:
654 feet
Step-by-step explanation:
If two different data sets have the same mean, the one with a wider range gives a better representation of its data.
Answer:
if this is a true or false question the answer would be true
I just need help with the answer
Answer:
\(\sin(\frac{19}{12}\pi)\\\\=\sin(\frac{15}{12}\pi+\frac{4}{12}\pi)\\\\=\sin(\frac{15}{12}\pi)\sin(\frac{1}{3}\pi)+\cos(\frac{15}{12}\pi)\cos(\frac{1}{3}\pi)\\\\=-\frac{\sqrt{2}}{2}\cdot\frac{\sqrt{3}}{2}-\frac{\sqrt{2}}{2}\cdot\frac{1}{2}\\\\=\frac{-\sqrt{6}-\sqrt{2}}{4}\\\\=-\frac{\sqrt{2}(\sqrt{3}+1)}{4}\)
A=2
B=3
I genuinely hope this helped you answer the question. Have a nice day.