I dont understamd this problem please help------!

A work crew has a new pump and an old pump. The new pump can fill a tank in 5 hours, and the old pump can fill the same tank in 7 hours. Write and solve and equation for the time it will take both pumps to fill one tank of the pumps are used together.

Answers

Answer 1
Hello,

Let's [tex]D_1\ the \ outflow\ of\ the\ new\ pump\\ D_2\ the \ outflow\ of\ the\ old\ pump\\\\ V \ the\ volume \of\ the\ tank\\\\ D_1*5=V==\ \textgreater \ D_1= \dfrac{V}{5} \\ D_2*7=V==\ \textgreater \ D_2= \dfrac{V}{7} \\ D_1+D_2= \dfrac{V}{5}+ \dfrac{V}{7} \\ D_1+D_2= \dfrac{7*V}{35}+ \dfrac{5*V}{35} \\ D_1+D_2= \dfrac{12V}{35} \\ Time \ for \ the \2 \pumps=V=(D_1+D_2)*\dfrac{35}{12}==>2H55min[/tex]

Related Questions

Which of the following statements is always true?
A All integers are counting numbers.
B All rational numbers are integers.
C All integers are whole numbers.
D All counting numbers are whole numbers.

Answers

The answer would be D.

D. All counting numbers are whole numbers.

All integers are counting numbers. This is not true. Counting numbers (also known as natural numbers) are positive whole numbers starting from 1, 2, 3, and so on. Integers include all positive and negative whole numbers, as well as zero. Thus, not all integers are counting numbers.

All rational numbers are integers. This is not true. Rational numbers include all fractions where the numerator and denominator are integers (denominator not zero). For example, 1/2 is a rational number but not an integer.

All integers are whole numbers. This is not true. Whole numbers include all non-negative integers (0, 1, 2, 3, ...), but integers also include negative numbers, which are not whole numbers.

Counting numbers (1, 2, 3, ...) are included in the set of whole numbers, which consists of all non-negative integers (0, 1, 2, 3, ...).

Please help!
The number line below represents which combined inequality?
number line with a closed circle on negative 2, shading to the left and a closed circle on 4, shading to the right
x greater than or equal to −2 or x less than or equal to 4
x greater than or equal to −2 and x less than or equal to 4
x less than or equal to −2 or x greater than or equal to 4
x less than or equal to −2 and x greater than or equal to 4

Answers

    I'm doing interval notations right now in pre-calculus, this how this notation should be written, (-∞,-2] or [4,∞), but this, (x ≤ -2] or [4 ≤ x), means the same thing. closed circle gets a bracket and an open circle gets a parenthesis, infinity always gets a parentheses because it is not a number. hope this helps           
                     
 




Answer:

C

Step-by-step explanation:

I just did it on edge 2021 :)

On her math quiz, Sandra lost 8 points for incorrect answers, but she gained 5 points for a bonus question. What is the sum of the points Sandra lost and gained?

Answers

[tex]8[/tex]  lost

[tex]5[/tex] gained

[tex](-8)+5=-(8-5) = -3[/tex]

Answer:
-3 points


A local hamburger shop sold a combined total of 646 hamburgers and cheeseburgers on Saturday. There were 54 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Saturday?

Answers

646-54 = 592

592/2 = 296

296+54 = 350

350+296 = 646

 there were 350 hamburgers and 296 cheeseburgers sold

Tim answered all the questions on his math test but got 10 answers wrong. He received 4 points for every correct answer, and there was no penalty for wrong answers. His score was 76 points.Write an equation to determine the total number of questions (q)(q)left parenthesis, q, right parenthesis on Tim's math test. And Find the total number of questions on his math test.

Answers

76/4=19 So with 19 questions correct and 10 incorrect, 29 questions were on the test.          p.s. If I misunderstood and this isn't answering all your questions just comment or pm.

The equation is

4(q-10)=76

The amount of questions is

29 questions

which of the following is an example of perpendicular lines?

Answers

Perpendicular angles are where 2 lines form 90 degree angles, such as in C

The whole is 8. One part is 8. What is the other part? Tell how you know.

Answers

I assume that the question here refers to addition, because that's what "part of" suggests- it's the closest mathematical operation that makes sense.

In an addition 8+x=8

x, the "other part" has to be 0 - this i means that the first part of 8 is 8 and the other is an "empty part"

what rate is equivalent to 72/9

Answers

8/1 is equivalent to 72/9

True or False? The point-slope form of a line is y + y1 = m(x + x1), where m is the slope and (x1, y1) is a point on the line. It's false right?

Answers

False.

Point-slope form is:  y-y1=m(x-x1)

They used sums instead of differences...

Answer:

False

The correct point slope form passing through points (x1,y1) is [tex](y-y1)=m (x-x1)[/tex] .

Step-by-step explanation:

The formula for the point slope form passing through the point (a,b) is given by.

[tex](y-b)=m (x-a)[/tex]

Where m is the slope .

As given in the question.

m is the slope and (x1, y1) is a point on the line.

Thus the point slope form becomes

[tex](y-y1)=m (x-x1)[/tex]

Therefore the correct point slope form passing through points (x1,y1) is [tex](y-y1)=m (x-x1)[/tex] .

A shoe store is having a sale where every pair of shoes cost $15. If you buy more than five pairs, you get a 10% discount. How much will it cost for seven pair of shoes?

Answers

7(15) = 105

10% off means u r paying for 90%...
0.9(105) = 94.50 <=
Multiply the amount of shoes being bought (7) by the price of one pair of shoes (15):

7(15) = $105 with NO discount

If you have 10% off that means that you will be paying 90%. Multiply 90% or 0.9 by the cost of the seven shoes:

0.9(105) = 94.50

You will pay $94.50 for the seven pairs of shoes.

on july 4 180 people hiked on the trail. of these 1/3 camped overnight. how many of the hikers dis not camp overnight

Answers

1 - 1/3= 2/3

180(2/3)= 120

120 hikers did not camp overnight.

Hopefully, this helps!

some kids like to ride their bikes to and from school let d be the distance in miles from a kid home to school write 2 expression to represent how far a kid travel by bike in 4 weeks

Answers

Expression 1;  If your friend bikes 1.5 miles home from school each day for 4 weeks, they bike a total of - miles in that time period. The math I did was multiply 5 by 4 to get 20 school days in 4 weeks, and multiplied 1.5 by 20 to get 30 miles biked in 4 weeks.
Expression 2;  If you bike 3.25 miles home from school each day, using the same math shown in the previous expression, substituting 1.5 for 3.25. Using that math, you would bike 65 miles in 4 weeks.

Sarcastic conclusion;  You and your friend both get quite the leg day just to get home from school!


The area of a circle is a function equal to the product of pi (pi) and the square of the radius (r). Which of the following shows this function?

Answers

it should be A= pi x r
you say "which of the following" but you didnt show any options

The function for the area of the circle if x is the radius of the circle and y is the area of the circle is y = πx².

What is area?

An object's area is how much space it takes up in two dimensions. It is the measurement of the number of unit squares that completely cover the surface of a closed figure.

Given:

The area of a circle is a function equal to the product of pi (pi) and the square of the radius (r),

The area of the circle can be written as shown below,

Area of circle = π × R²

Here π is a constant, R is the radius of the circle,

When we put the value of the radius, we will get the value of the area,

Hence, the radius is an independent function and the area is dependent on the value of R (dependent function),

Replace y with area and radius with x as shown below,

y = πx²

Thus, y = πx² is the function for the area of the circle.

To know more about Area:

brainly.com/question/27683633

#SPJ2

Choose one of the figures above.
On a piece of graph paper sketch the figure from the top, front, and side views by shading in the appropriate number of boxes.
Determine the number of faces in the figure. Watch for “hidden faces.”
If the area of one of the faces is 4, what is the surface area for the figure?

Answers

"hidden Faces" what in the world was your school smoking when they made this question?!

The term that describes how long it takes a function to repeat its behavior is the _____

Answers

The term is called period, i.e. after every period, the function starts over again

Greg has decreased his running time by minute each of the last six weeks. Write an expression to represent the total change in his time over the last six weeks. Then, find the total change.

Answers

Total change in relation to when Greg first started decreasing his run time : -6 minutes (at the end of 6 weeks)

Expression : -x (x is the number of weeks)

what is 8.05 x 10^8 - 9.16 x 10^6

Answers

8.05*10^8 - 9.16*10^6 = 805*10^6-9.16*10^6 = (805-9.16)*10^6 = 795.84*10^6 = 7.9584*10^8

Luis made some trail mix .He mixed 4 2/3 cups of popcorn ,1 1/4 cups of peanuts ,1 1/3 cups of raisins ,and 3/4 cup of sunflower seeds.He gave 5 of his friends an equal amount of trail mix each.How much did each friend get?

Answers

so you have to add all the fractions together and then divide by five. When dealing with mixed fractions i like to add the whole numbers first, then add the fractions:
4 2/3, 1 1/4, 1 1/3, 3/4
the whole numbers:  4 + 1 + 1 = 6
then we are left with 2/3, 1/4, 1/3, 3/4
add the ones with common denominators together to make it easiest: 2/3 + 1/3 = 3/3 = 1 (another whole number! add it to 6 to get 7)
now we are left with 1/4 + 3/4 = 4/4 = 1 (another whole number! add it to 7 to get 8)
Now we know there are 8 cups of trail mix all together divide it by 5 friends and you get 8/5. 5 goes into 8 once with three left over so you get 1 3/5 cups per friend.

(Picture) please help asap!

Answers

0 to 1 is broken down into 9 equal spaces

the dot is on the 5th line

 so it would be 5/9

What are the steps for constructing a circumscribed circle for using only a compass and a straightedge?

Answers

Find the incenter of the triangle.
Draw a perpendicular from the incenter to one of the sides. Mark the point of intersection with the side.
Set the distance between compass points to the distance between the point of intersection and the incenter. This is the radius of the circle
Construct the perpendicular bisector of one side of triangle
Construct the perpendicular bisector of another side
Where they cross is the center of the Circumscribed circle
Place compass on the center point, adjust its length to reach any corner of the triangle, and draw your Circumscribed circle!

A rectangular tabletop has a length of 4 3/4 feet and an area of 11 7/8 square feet. What is the width of the table top?

Answers

Well to find this first you will divide the area by the length.
If you can use a calculator just put 11.875/4.75 which gives you as your width 2.5.
If you can't then change them into irregular fractions so...
11 7/8 --> 95/8
4 3/4 --> 19/4
Then divide them
95/8 / 19/4
95/8 * 4/19
380/152= 2.5 or 2 1/2

Consider the following sets. U = {ordered pairs on a coordinate plane} A = {ordered pair solutions to y = x} B = {ordered pair solutions to y = 2x} Which ordered pair satisfies A ∩ B?

Answers

Answer:

(0,0)

Step-by-step explanation:

We have,

U = { (x,y) : x,y belong to real numbers }

A = { (x,y) : (x,y) is a solution of y=x }

B = { (x,y) : (x,y) is a solution of y=2x }

We need to find the ordered pair (x,y) that belong to A[tex]\bigcap[/tex]B.

Let, (x,y) belong to A[tex]\bigcap[/tex]B

i.e. (x,y) belong to A and (x,y) belong to B

i.e. y = x and y = 2x

i.e. x = 2x

i.e. x = 0

Now, substitute x= 0 in any of the equation say y = x, we get y = 0.

Hence, the ordered pair satisfying A[tex]\bigcap[/tex]B is (0,0).

For a set U, The ordered pair satisfies A ∩ B is mathematically given as

x = 0,  y = 0 (0,0)

Which ordered pair satisfies A ∩ B?

Question Parameter(s):

U = {ordered pairs on a coordinate plane}

A = {ordered pair solutions to y = x}

B = {ordered pair solutions to y = 2x}

if  (x,y) belongs to AnB

y = x and y = 2x

x = 0

In conclusion, subsituting we have

y = x and y = 2x

y = 0

Read more about Arithmetic

https://brainly.com/question/22568180

(09.01) The function below shows the number of car owners f(t), in thousands, in a city in different years t: f(t) = 0.25t2 − 0.5t + 3.5 The average rate of change of f(t) from t = 2 to t = 6 is ______ thousand owners per year.

Answers

The average rate of change is:

r=(f(b)-f(a))/(b-a), where a and b are the beginning and end of the interval.

So in this case:

r=(.25(6^2)-.5(6)+3.5-.25(2^2)+.5(2)-3.5)/(6-2)

r=1.5

So the average rate of change of car owners is 1.5 thousand owners per year.

Answer: The  average rate of change of f(t) from t = 2 to t = 6 is 1.5 thousand owners per year.

Step-by-step explanation:

Given: The function below shows the number of car owners f(t), in thousands, in a city in different years t:

[tex]f(t) = 0.25^2 - 0.5t + 3.5[/tex]

Now,

[tex]f(2) = 0.25(2)^2 - 0.5(2) + 3.5=3.5\\\\= f(6) = 0.25(6)^2-0.5(6)+ =9.5[/tex]

Now, the  average rate of change of f(t) from t = 2 to t = 6 is given by :-

[tex]k=\dfrac{f(6)-f(2)}{6-2}\\\\=\dfrac{9.5-3.5}{4}=1.5[/tex]

Hence, the  average rate of change of f(t) from t = 2 to t = 6 is 1.5 thousand owners per year.

A flooring company ships 13x13 inch tile in boxes of 11 tiles each, on pallets containing 40 boxes (Check Work Required. Please Help)

A) How many square feet does each box contain?
B) How many square feet will a pallet of tile cover?

Answers

Each tile cover an area of 13 in*13 in= 1.08 ft *1.08 ft= 1.17 square feet.

A) Each box contains 11 tiles, each of which covers 1.17 square feet.

So the area each box covers is 11*1.17 square feet=12.87 square feet

B) A pallet contains 40 boxes, each of which covers 12.87 square feet, 

so one pallet covers 40*12.87 square feet=514.8 square feet.


Answer:

A) 12.87 square feet

B) 514.8 square feet.

Julia and Sam rode their bikes on the bike path. Julia rode her bike 3/10 of the path's distance. Sam rode his bike 4/8 of the path's distance. Compare the distances using <,>, or =.

Answers

You can turn them into decimals:

3/10 = 0.3 and 4/8 = 0.5

0.3 is less than 0.5, so you will use the symbol <
< that's the answer because 4/8 is a bigger number than 3/10

PLEASE HELP!! 20 POINTS <33

Answers

[tex](x-x_a)^2+(y-y_a)^2}=r^2 \\ x_a=3, \ \ y_a=5, \ \ r=2 \\ \\ \\ (x-3)^2+(y-5)^2}=2^2 \\ \boxed{(x-3)^2+(y-5)^2=4}[/tex]
The first equation is the answer

Multiply 17 minutes 19 second by 11

Answers

It would be 190 minutes, and around 48 seconds.
Would be 190 mins and 48 secs.

The solution to m + (-38) = 15 is 53. True False

Answers

it is true because when you do 53-38 it will be the same as 53+-38 both will have the sum of 15

It is true because you would have to replace with 53.

m + (-38) = 15
53 + (-38) = 15

Therefore the answer is true

Factor x^2 - 64 into two binomials


PLZ I need the answer ..IK IK but plzzz ;c

Answers

Answer: (x+8)(x-8)
Proof:
+8-8=0
8*-8=-64
The binomial [tex]x^2 - 64[/tex] is special type of binomial called the difference of squares. A difference of squares is a binomial in which both of the terms are perfect squares.

[tex]x^2 - y^2 = (x + y)(x - y)[/tex]

[tex]x^2 - 64 = (x + 4)(x - 4)[/tex]

So, (x + 4)(x - 4) is the answer.

This sequence represents the diameters of circles used to create an art project: 2.5 cm, 3.1 cm, 3.7 cm, 4.3 cm Let f(n) represent diameter in centimeters and n the term number in the sequence. Which equation represents the sequence of diameters?

Answers

ANSWER

The expression that represent the sequence of diameters is,
[tex]f(n) = 0.6n + 1.9[/tex]


EXPLANATION

The terms in the sequence are,

[tex]2.5,3.1,3.7,4.3[/tex]


The first term is
[tex]a = 2.5[/tex]

The common difference is

[tex]d = 3.1 - 2.5 = 0.6[/tex]


The formula for the nth term is given by,


[tex]f(n) = a + (n - 1)d[/tex]



We substitute the values in to the formula to get,



[tex]f(n) = 2.5+ (n - 1)0.6[/tex]



We expand the parenthesis to obtain,

[tex]f(n) = 2.5 + 0.6n - 0.6[/tex]



We rearrange to obtain,

[tex]f(n) = 0.6n + 2.5- 0.6[/tex]


We simplify to get,

[tex]f(n) = 0.6n + 1.9[/tex]

Answer:

[tex]f(n) = 1.9 +0.6n[/tex]

Step-by-step explanation:

The nth term of the arithmetic sequence is given by:

[tex]a_n = a_1+(n-1)d[/tex]            ....[1]

where

[tex]a_1[/tex] is the first term

d is the common difference and n is the number of terms.

Here, f(n) represent diameter in centimeters and n the term number in the sequence.

Given the sequence represents the diameters of circles used to create an art project:

2.5 cm, 3.1 cm, 3.7 cm , 4.3 cm

This sequence is an arithmetic sequence with

[tex]a_1[/tex] = 2.5 and d = 0.6

Since,

3.1-2.5 = 0.6,

3.7-3.1 = 0.6

4.3-3.7 = 0.6

Substitute the given values in [1] we have;

[tex]f(n) =2.5+(n-1)(0.6)[/tex]

Using distributive property, [tex]a\cdot (b+c) = a \cdot b+ a\cdot c[/tex]we have;

[tex]f(n) = 2.5+0.6n-0.6[/tex]

Simplify:

[tex]f(n) = 1.9 +0.6n[/tex]

Therefore, the equation represents the sequence of diameters is, [tex]f(n) = 1.9 +0.6n[/tex]

Other Questions
Using the completing-the-square method, rewrite f(x) = x2 8x + 3 in vertex form. When speaking with a client who has schizophrenia, the nurse notes that the client keeps interjecting sentences that have nothing to do with the main thoughts being expressed. the client asks whether the nurse understands. how should the nurse reply? How did the united states convince japan and korea to open trade relations? The relationship between the bee and the bacteria living in the bee's gut can be classified as _______. Identify a social, environmental, or political problem that is of local, national, or global concern. 16. How does globalization lead to interdependence among nations? A)Leaders make agreements with other nations to buy goods and services. B)People come to depend on foreign industry to provide them with employment. C)Nations begin to rely on each other for things they cannot produce themselves. D)Workers ask other nations to persuade sweatshops to provide a living wage. Write an equation in point-slope form for the line through the given point with the given slope. (8, 3); m = -1/4 Tammy wants to raise $175 for a school fundraiser. She has raised $120 so far. How much does she need to reach her goal? Warren wants to start a local newspaper, but the local city council has threatened to shut him down. Which amendment to the Constitution should Warren use as protection of his rights? Ninth Amendment First Amendment Fifth Amendment Second Amendment At the height of the Roman Empire, how far north did the empire stretch? What did the homestead act help many former slaves to do? How did he immortalize virginia during the last year of his own life? What is the main purpose of an informational interview?A.learn more about a company or a careerB.get hired at a top-notch companyC.develop more connections for social networkingD.discover what not to do in a job interview You are studying for your final exam of the semester. up to this point, you received 3 exam scores of 67%, 68%, and 78. to receive a grade of C in the class, you must have an average exam score between 70% and 79% for all 4 exams including the final. A negative consequence of consuming too much protein is _____. What is the solution to the system of linear equations graphed below?A. (0,3)B. (0,-2)C. (-2,-2 1/2)D. (-2 1/2, -2) [07.02]what is the salt formed when magnesium hydroxide reacts with hydrochloric acid? explain the first duty of the missionaries In all of its forms, meditation suppresses activity of the ________ system. What was the major weakness of Wegener's theory of continental drift Steam Workshop Downloader