One pump can fill a tank of water in 5 hours. A second tank can fill the same tank in 4 hours. If both pumps are used together, how long will it take to fill the tank?
4/5 hours
20/9 hours
9/20 hours
5/4 hours

Answers

Answer 1

Answer:

4/5 hours

Step-by-step explanation:

Answer 2

Answer:

20/9 hours

Step-by-step explanation:

I got it right on the quiz


Related Questions

Jericho has m paintings and n drawings. He sold his paintings for $x each and drawings for $y each. His earnings for one day are
represented by the expression given below.

x(m) + y(m- 12)

Which statement best describes the term (m - 12)?

A. It is the number of paintings sold, which was 12 more than the number of drawings sold.
B. It is the number of drawings sold, which was 12 more than the number of paintings sold.
C. It is the number of paintings sold, which was 12 less than the number of drawings sold.
D. It is the number of drawings sold, which was 12 less than the number of paintings sold.

Answers

Answer:

b

Step-by-step explanation:

Can someone please help me with math

Answers

Answer:

A

Step-by-step explanation:

Hello There!

This is the formula for volume of a cylinder

[tex]V=\pi r^2h[/tex]

where r = radius and h = height

we are given the height and diameter height - 10 ft diameter - 22 ft

we are not give the radius directly but we can easily convert the diameter to the radius by dividing by 2

22/2=11 so the radius is 11

now having found the radius and height we plug in the values into the formula (note: it says leave answer in terms of pi so we will not apply pi to the final answer.)

[tex]V=\pi 11^210\\11^2=121\\121*10=1210\\V=1210\pi[/tex]

so we can conclude that the answer is A

it’s 82 :))))))))))))))))

You call 5 friends, tomorrow they call 5 each. Write an equation.

Answers

Answer:

5+5=10

Step-by-step explanation:

5+5=10

hope this helps. plz mark me as brainliest.

Factor the expression completely. 12X+18

Answers

Answer:

6(2x+3)

Step-by-step explanation:

There's really no way to explain this. Take the number that all of the numbers in the equation can be divisible by and then single it out and then yeah.

Hope this helped! :)

Find the nth Maclaurin polynomial for the function.
f(x) = (4x − 5)/(x + 1), n = 4

Answers

The nth Maclaurin polynomial for the function f(x) = -5 - x + 4x² - 5x³ + 4x⁴ + ...

The nth Maclaurin polynomial for the function f(x) = (4x − 5)/(x + 1), we need to expand the function as a power series centered at x = 0 (the Maclaurin series) and then truncate it to the desired degree.

First, let's find the Maclaurin series expansion of f(x):

f(x) = (4x − 5)/(x + 1)

To expand this as a power series, we'll use the concept of geometric series expansion. We'll start by expressing f(x) as a product of two functions:

f(x) = (4x − 5)×(x + 1)⁻¹

Now, let's find the power series expansion for each factor separately.

1.The power series expansion for (4x - 5) centered at x = 0 is given by:

(4x - 5) = -5 + 4x

2.The power series expansion for (x + 1)⁻¹ centered at x = 0 is given by the geometric series formula:

(x + 1)⁻¹ = 1 - x + x² - x³ + x⁴ - ...

Note that this expansion is valid when |x| < 1 since it's based on a geometric series.

Now, we'll multiply these two expansions together to get the expansion for f(x). We'll keep terms up to the fourth degree (n = 4).

f(x) = (4x - 5) × (x + 1)⁻¹ = (-5 + 4x) × (1 - x + x² - x³ + x⁴)

Expanding this expression:

f(x) = -5 + 4x - 5x + 4x² - 5x³ + 4x⁴ + ...

Simplifying the terms:

f(x) = -5 - x + 4x² - 5x³ + 4x⁴ + ...

This is the Maclaurin series expansion for f(x). The nth Maclaurin polynomial, we'll truncate the series at the fourth degree (n = 4):

f(x) ≈ -5 - x + 4x² - 5x³ + 4x⁴

Therefore, the fourth Maclaurin polynomial for f(x) is given by:

P₄(x) = -5 - x + 4x² - 5x³ + 4x⁴

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what is the equation of the line that has a slope of -3 and a y-intercept of -1

Answers

Answer:

y=4x+2

Step-by-step explanation:

Which of the following assumptions is not true for multiple linear regression?
Group of answer choices
o The independent variables are not correlated.
o The residuals are normally distributed.
o The relationship between dependent and independent variables is linear.
o There will be a multi-collinearity effect.

Answers

The assumption which is not true for multiple linear regression is that there will be a multi-collinearity effect. What is multiple linear regression? Multiple linear regression is a regression method where the response variable is dependent on more than one independent variable. Multiple linear regression is an extension of linear regression, where one response variable is dependent on one independent variable. It helps to determine the nature of the relationship between dependent variables and independent variables in the form of linear equations. It is used to find out the relationship between variables and make predictions based on that relationship. Assumptions of multiple linear regression1. Linearity, It is assumed that the relationship between the independent variables and dependent variables is linear. This implies that as the value of the independent variable changes, the change in the dependent variable is constant.2. Independence, There should be independence among the observations. This implies that there should not be any relationship between the residuals of the observations.3. Homoscedasticity implies that the variance of residuals should remain constant across all levels of the independent variable.4. Multicollinearity, It is the condition where the independent variables are highly correlated with each other. If there is perfect collinearity, it will not be possible to obtain the estimates of regression coefficients.5. Normality, The residuals should follow a normal distribution with mean zero and constant variance. The residuals should be normally distributed and centered on zero. The assumptions that are true for multiple linear regression are: The independent variables are not correlated. The residuals are normally distributed. The relationship between dependent and independent variables is linear. The assumption which is not true for multiple linear regression is that there will be a multi-collinearity effect. Hence, the correct option is D) There will be a multi-collinearity effect.

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Certain standardized math exams have a mean of 100 and a standard deviation of 60. Of a sample of 36 students who take this exam, what percent could you expect to score between 80 and 90?
16
15.85
13.5
12.5

Answers

Approximately 12.5% percentage of the students could be expected to score between 80 and 90.

To determine the percentage of students who could be expected to score between 80 and 90, we need to calculate the z-scores for these scores and use the standard normal distribution.

First, we need to calculate the z-scores for 80 and 90 using the formula:

z = (x - μ) / σ

where x is the individual score, μ is the mean, and σ is the standard deviation. Plugging in the values of μ = 100, σ = 60, and x = 80 or x = 90, we can calculate the z-scores.

For x = 80:

z = (80 - 100) / 60 = -0.3333

For x = 90:

z = (90 - 100) / 60 = -0.1667

Next, we need to find the area under the standard normal distribution curve between these two z-scores. This represents the percentage of students who scored between 80 and 90.

Using a standard normal distribution table or calculator, we can find that the area between -0.3333 and -0.1667 is approximately 0.1210 or 12.1%.

Therefore, approximately 12.5% of the students could be expected to score between 80 and 90.

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To join a local square dancing group, Jan has to pay a $100 sign-up fee plus $25 per month. Write an equation for the cost (y) based on the number of months.
a. y = 25x + 100
b. y = 100x + 25
c. y = 25 + 100x
d. y = 100 + 25x

Answers

The correct answer is option A which is y = 25x + 100.

Given the following:

To join a local square dancing group, Jan has to pay a $100 sign-up fee plus $25 per month

We need to write an equation for the cost (y) based on the number of months.

To solve the above problem, the answer is;a. y = 25x + 100

Explanation; Let's break down the problem

The $100 sign-up fee is a fixed cost that is added only once to the monthly fee which is $25. Thus the equation for the cost (y) based on the number of months can be expressed as; y = 25x + 100 where:y is the cost for the number of monthsx is the number of months

Therefore the correct answer is option A which is;y = 25x + 100.

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To join a local square dancing group,

Jan has to pay a $100 sign-up fee plus $25 per month.

The equation for the cost (y) based on the number of months is

y = 25x + 100,

where x is the number of months.

Option A is the correct equation for the cost based on the number of months.

Writing the equation:

y = 25x + 100

Where:

y = Cost based on the number of months

x = Number of months

Therefore, when Jan has been part of the local square dancing group for 1 month, the total cost will be:

$25 * 1 + $100 = $125

And if Jan has been a part of the group for 4 months, then the total cost would be:

$25 * 4 + $100 = $200

Therefore, option A is the correct answer.

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Find the value of x and y.

Answers

Answer:

Step-by-step explanation:

I need help with this , 7x-3y+4x-5y+8x-6y​

Answers

Answer:

19x−14y

Steps:

7x-3y+4x-5y+8x-6y

=19x-3y-5y-6y

= 19x−14y

plz mark as brainliest

Answer:

19x-14y

Step-by-step explanation:

rearrange

7x+4x+8x-3y-5y-6y

solve the coefficient and add the variables

a business woman bought a personal computer for $108000.calculate her selling price on the personal computer if she wants to make profit of 25%​

Answers

Answer:

$135,000

Step-by-step explanation:

108000*1.25

Practice Problems
1)
Chase is comparing music subscription prices. A 12-month subscription with All Ears costs
$91.80 and a 3-month subscription with Press Play costs $19.35. Which service costs less per
month?

Answers

Step-by-step explanation:

[tex]91.8 \div 12 = 7.65 \\ 19.35 \div 3 = 6.45[/tex]

3 months

Complete the two-way frequency table below, which shows the relationship between adults' gender and whether these adults buy a truck or a car for their first new vehicle. From a sample of 94 adults, the following data are collected:

Truck Car Total
Female 9 36
Male 18 31
Total 94

What is the probability (rounded to the nearest whole percent) that an adult will buy a car, given that he is a male? Are the events being male and buying a car independent? (1 point)

63%; they are dependent
46%; they are dependent
63%; they are independent
33%; they are independent

Answers

64% they are independent

I will come back to this question when it has been further clarified.

(Honestly I just really need to delete this answer since I misread the question but it doesn't give me an option to delete it).

how do you solve 1/2(6)(h+1)=18​

Answers

Multiply 6 by 1/2 to get 3

Ow you have :

3( h + 1) = 18

Distribute the 3:

3h + 3 = 18

Subtract 3 from both sides:

3h = 15

Divide both sides by 3:

H = 5

A person places $4630 in an investment account earning an annual rate of 5.7%,
compounded continuously. Using the formula V = Pert, where Vis the value of the
account in t years, P is the principal initially invested, e is the base of a natural
logarithm, and r is the rate of interest, determine the amount of money, to the nearest
cent, in the account after 9 years.

Answers

Answer:

75.935

Step-by-step explanation:

If V = Pe^rt and we are given P (the principle investment) =4630 ,

a rate of 5.7 % which as a decimal = 0.057 (% divided by 100 = decimal)

we can substitute this information in and get V=4630 e^(.057t).

then it says what will it be in 9 years? so we put 9 in for "t" and get

v = 4630 e^(0.057 * 9) simplify using a calculator and we will get our answer.

490 students and 10 teacher will ride the bus to go to the zoo if each bus can seat so passengers how many buses will be needed many zoo trip

Answers

Answer:

If you add teacher plus students which is 490+10=500

you get 500 people in total after that you divide 500 by 50 and you get 10 so you will need 10 busses in total hope this helped!

Step-by-step explanation:

Need help with this question thank you!

Answers

Answer:

Y= 3/5-4

Step-by-step explanation:

What is slope-intercept form? Slope intercept form is an equation for graphing. It is y=mx+b. The "m" stands for the slope, or how much coordinates it takes to move to the next point. The "b" stands for the y-intercept, or where the line is perfectly on the y-line.

Step One: The first part of the equation is the slope, so let's figure that out. Since this one a graph, it is easy to tell the slope. The points are nicely marked, so we don't have to guess which points are visible. We are going up 3 jumps and then across 5 jumps. The slope is always "rise/run" where the "rise" is the y and "run" is x. So, the slope is 3/5x.

Step Two: For the last part, we need to know the y-intercept. It is clearly shown on the graph: -4. Because it is negative, we remove the plus sign because a plus with a negative is subtraction.

Step Three: We can combine both parts and that is the answer: y=3/5x-4.  

ABM Services paid a $4.15 annual dividend on a day it closed at a price of $54 per share. What
was the yield?

Answers

Answer:

- 22719559.

Step-by-step explanation:

What is the radius and diameter of the following circle?

Answers

Answer:

Diameter= 10.2  -  Radius=5.1

Step-by-step explanation:

5.1 x 2= 10.2

10.2/2=5.1

2. Find mzR and mzS.
89°
R
157 T
Р

Answers

Answer:

m∠R = 123°

m∠S = 91°

Step-by-step explanation:

The measure of an inscribed angle is 1/2 the measure of the intercepted arc

m of arc QRS = 2 m∠P = 2(57) = 114

Now m of arc SPQ = 360 - 114 = 246

So, m∠R = 1/2(246) = 123

m of arc RSP = 2 m∠Q = 2(89) = 178

m of arc PQR = 360 - 178 = 182

m∠S = 1/2(182) = 91

what is the volume of the cylinder?
5 yd
4 yd
cubic yards.
Volume

Answers

Answer:

volume=1yd x 1yd = q cubic yard

What is vertical asymptote for the given equation
f(x) = log(x - 5) + 2

Answers

The answer is:
X = 5

help me please asap subtract with renaming

Answers

Answer:

1. 1/4

2. 43/10 or 4 3/10 either are correct.

3. 67/12 or 5 7/12 either are correct.

Step-by-step explanation:

I hope this helped.

which shows a difference of squares?
a.10 y squared minus 4 x squared
b.16 y squared minus x squared
c.8 x squared minus 40 x + 25
d.64 x squared minus 48 x + 9

Answers

The expression that shows a difference of squares is option B, i.e., 16y² − x². We can represent it as (4y - x)(4y + x).Therefore, the correct option is B.

Difference of Squares is a squared quantity that can be represented as the difference of the squares of two variables or numbers. In simple terms, when two squares are subtracted, a difference of squares is produced. The squares of the two quantities, x and y, are subtracted from each other in the Difference of Squares.Here, the expression that shows a difference of squares is option B, i.e., 16y² − x². We can represent it as (4y - x)(4y + x).Therefore, the correct option is B. In this expression, we have the square of two quantities subtracted, which results in the Difference of Squares.Checking the other options, we can say that option A (10y² − 4x²) cannot be considered a difference of squares because there is no squared quantity subtracted from it. Similarly, option C (8x² − 40x + 25) and option D (64x² − 48x + 9) do not show the Difference of Squares as they do not have two squared quantities subtracted from each other.

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Tell whether the angles are complementary or supplementary. Then find the value of X.

Answers

Answer:

Complementary

x= 60

Step-by-step explanation:

Answer:

The angles are complementary.

X =  60

Step-by-step explanation:

A swimming pool measures 25.8 meters by 11.9 meters. It is filled with water to a depth of 1.1 meters. The pool is emptied by a tube that emits 29.8 liters per second. Estimate the approximate time required to empty the pool

Answers

Answer:

11 Seconds

Step-by-step explanation:

Swimming pool volume:

25.8 × 11.9 × 1.1 = 337.722

Time to empty pool:

337.722 ÷ 29.8 = 11.3329530201 ≈ 11 seconds

Which expression is equivalent to (-3)x+(3)(-12)?

Answers

Answer:

Step-by-step explanation:

(-3)x + (3)(-12)

= -3x -36

or -3(x + 12)

Answer:

Step-by-step explanation:

(-3)x + 3(-12) = (-3) (x + 12)

(-3) is both the two terms. So we can take (-3) as common

which properties are being used to solve the question

Answers

Answer:

Both commutative and associative

If the answer isn’t an integer express in simplest radical form

Answers

Answer:

[tex]x = \frac{20}{ \sqrt{3} } \\ y = \frac{40}{ \sqrt{3} } [/tex]

Step-by-step explanation:

[tex]for \: \: x \\ \tan(60) = \frac{20}{x} \\ \sqrt{3} = \frac{20}{x} \\ x = \frac{20}{ \sqrt{3} } \\ \\ for \: y \: \\ \sin(60) = \frac{20}{y} \\ \frac{ \sqrt{3} }{2} = \frac{20}{y} \\ \sqrt{3} \: y = 20 \times 2 \\ y = \frac{40}{ \sqrt{3} } [/tex]

I hope that is useful for you :)

Other Questions
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State Construction anticipates the construction will take three years.The companys accountants provide the following contract details relating to the project:Contract price $624 millionEstimated construction costs $480 millionEstimated total profit $144 millionDuring the three-year construction period, State Construction incurred costs as follows:Year 1 $48 millionYear 2 $288 millionYear 3 $144 millionState Construction uses the cost-to-cost method to recognize revenue.Which of the following represent the revenue recognized in Year 1, Year 2, and Year 3?Select one:a. $62 million, $312 million, $250 millionb. $62 million, $374 million, $187 millionc. $0 million, $0 million, $624 milliond. $60 million, $376 million, $188 millione. None of these are correct. Determine the size of your investment account 30 years from now (when you plan to retire) if you deposit $12,000 each year, beginning 1 year from now, and the account earns interest at a rate of 10% per year. Draw the cash flow. The European Union contemplates imposing tariffs on imported solar panels. As- suming that the market for solar panels is competitive and that the EU is a large actor in global trade, the effects of such an action on the surplus of European con- sumers, European producers and on the EU as a whole (net effect) are: (a) consumer surplus will decrease, producer surplus will increase and the net effect will be negative (b) consumer surplus might increase or decrease, producer surplus will increase and the net effect will be negative (c) consumer surplus will decrease, producer surplus will increase and the net effect might be positive or negative (d) consumer surplus will decrease, producer surplus might increase or decrease and the net effect will be negative reflect on what you have learned. 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Further economic analysis has determined that when national income in Country A rises by $15, consumption in Country A increases by $3.1) What type of output gap is Country A experiencing? (1pt)2) The increase in unemployment is an increase in what type of unemployment? (1pt)3) A worker for Country A's central bank, Ms. X, believes it is best to reduce this gap through monetary policy. Based on the above information, what type of open market operations would Ms. X suggest Country A's bank undertake? (Ipt). Use a liquidity- preference diagram to show what impact this open-market operation policy will have on interest rates. Also explain what impact the policy will have on output, unemployment, and inflation.4) In opposition to Ms. X. Ms. Z believes this the government should close this output gapusing fiscal policy. Based on Ms. Z's recommendations,a. What is the size of the multiplier? (2pts) b. 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Mutations in which two genes are constitutive? lac__ and lac ___.2.The ara operon is controlled by a regulator protein that exerts ________.induction and expressiontop and bottom controlupward and reverse controlexpressivity and penetrancepositive and negative control assume that the won is the subsidiarys functional currency. what balances does a consolidated balance sheet report as of december 31, 2020? tom is shopping for a policy that covers two people and would pay the face amount only when the first person diest. the type of policy is looking for is called a it takes four hydrogen nuclei to create one helium nucleus in the protonproton chain, which is the main energy source of the sun. if a single hydrogen nucleus ha You are working for a business involved in domestic trade and moving into the international trade arena. The board has asked you to research and prepare a 1,000-word report explaining:why it is necessary to report international activities in a timely and accurate mannerwhere the financial data will come fromthe organizations duties and obligations regarding financial reporting of international business transactionsthe information that should be contained in the organizations financial reports how the reports will be used and by whom Ting = a Ti-ujt b Tituj tc Tighet d Tijft where, a=6= & - 2 try c=2= (Ayey 2 [+(47)] 2 Suppose the plate is a square with unit length so that Ax = 1/(Nx-1), Ay = 1/(Ny-1) (3) Simplify Eq. (2). The boundary conditions for T are as follows. On AC (i=1); T(x=0, y)= y (4a) On AB (=1): T(x, y=0)= -2sin(31x/2). (4b) On BD (i=Nx): T(x=1, y)= 1-sin(ny)-0.9*sin(2ty) (4c) On CD (j=Ny): T(x=0, y=1)=(2x-1| (40) Discretize the above boundary conditions. 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