Answer: 4 workers
==============================================
Explanation:
We have 9 workers painting walls in a house. Let's say the total square feet needed to be painted is 9000 square feet. I picked some arbitrary large multiple of 9, so that it leads to 9000/9 = 1000 square feet per worker.
In other words, each worker paints 1000 square feet.
They can do the job in 48 hours, which means their rate is 1000/48 = 125/6 square feet per hour approximately.
After 8 hours, each worker paints 8*(125/6) = 500/3 square feet. So all 9 workers painted 9*(500/3) = 1500 square feet
Put another way: they got 8/48 = 1/6 of the job done after 8 hours, so (1/6)*9000 = 1500 sq feet of wall has been painted so far. This leaves 9000-1500 = 7500 sq ft unpainted.
------------------------------------------------
Let x be the number of workers that leave.
There are 9-x people still on the job.
The 7500 sq ft of left over wall is divided among the 9-x people. Each worker gets 7500/(9-x) sq feet of wall to paint.
Earlier we found each worker's rate was 125/6 sq ft per hour. If they complete the remaining job in 72 hours, then,
(rate)*(time) = (amount of job done)
(125/6)*(72) = 7500/(9-x)
1500 = 7500/(9-x)
1500(9-x) = 7500
9-x = 7500/1500
9-x = 5
-x = 5-9
-x = -4
x = 4
4 workers went home.
If 4 workers went home, then 9-4 = 5 workers remain
They each have 7500/5 = 1500 sq ft of wall to paint, which helps confirm the answer.
If y=x+2 changed to y=x-1 how would it change
What type of triangle is this?
A. Right
B. Equilateral
C. Isosceles
D. Scalene
Answer:
It's an Equilateral triangle
Step-by-step explanation:
This is because of the fact that all of its sides are equal
Answer:
Equilateral Triangle
Step-by-step explanation:
All sides are equal (60 degrees) so it is an equilateral triangle
You decide to bake a cake for your sister's birthday, but you discover you don't have enough eggs. Before you go to the store, you set up a linear function to model the number of eggs you will have after your purchase, y=12x+2 . What does the represent in this function?
a. the number of eggs you need
b. the number of eggs the recipe calls for
c. the number of eggs you have at home
d. the number of eggs you will buy
Answer:
I think it will c because I have some eggs at home
Alan has forgotten his 4-digit PIN code.
He knows the first digit is 9 and the last digit is larger than 5.
How many different sets of 4 digits could it be?
Answer:
400 setsStep-by-step explanation:
First digit- 1 option (9)Second digit - 10 options (0 to 9)Third digit - 10 options (9 to 9)Fourth digit - 4 options (6, 7, 8, 9)Possible number of sets:
1*10*10*4 = 400help!!!!!!!
The functions f(x) and g(x) are shown on the graph.
f(x) = x2
What is g(x)?
Answer:
-x²-2
Step-by-step explanation:
It won't let me copy the question but I linked a screenshot of it.
Answer:
I can't see it to answer your question
Chloe bought 8/9 pounds of grapes. She used 1/3 of the grapes in a fruit salad and saved the rest. How many pounds of grapes were in the fruit salad?
Answer:
8/27 lb
Step-by-step explanation:
The salad has 1/3 of 8/9 lb.
1/3 * 8/9 = 8/27
Answer: 8/27 lb
I’m Dum And Clueless Help
Answer:
-3a-4b+5
Step-by-step explanation:
(3a-6b+12)-(6a-2b+7)
3a-6b+12-6a+2b-7
3a-6a-6b+2b+12-7
-3a-4b+5
Hello! my name is unamorrameca, but but I wanted to fit in English so I got ameccamorra
I am from Peru and therefore I speak Spanish. from there I participate in brainly.lat and then I started to think that crazy, there are other platforms of different brainly languages so I looked in this language (English) and I found it :)
I hope to get along with everyone since this is something new for me, to be able to help people from Canada, USA
Well, I know that nobody asked me what I'm doing here. I just want to know more about you. said this I say goodbye.
- una nueva aventura chida :,D
Answer:
Hi! Nice to meet you!
Step-by-step explanation:
P.S Can I have brainliest?
PLEASE HELP ASAP!!!!
After paying seven dollars for the pie, Sara has ninety-six dollars left. How much money (m) did she have
before buying the pie? Do not include spaces in your answers.
Answer:
103
Step-by-step explanation:
bassically what you do is add 7 dollars to the ninety six that she lost when she bought the pie or you can do this equation 96 + m but m would be the money she lost being 7 dollars so you would replace m with 7 so it would be 96 + 7 = 103
Hard moments for me and the bois
Answer:
Angle 4,
Step-by-step explanation:
Partnership with angle 3, it'll make a 90 degree angle.
Solve the simultaneous equations:
y−2x=12
y+2x=4
x=
and y=
Answer:
y = 8
x = -2
Step-by-step explanation:
(If you are cancelling the y form the equation to find x first then subtract the equation as the signs are the same or else if you are cancelling the x first then add the equations as the signs are different)
y-12x=12 l cancelled the x from the equation to
y+2x=4 find y
+ + +
_____
2y = 16
y= 16/2
y=8
8 in eqn no 1
y-2x=12 replace the y with 8 and find x
8-2x=12
8-12=2x
-4=2x
-4/2=x
-2=x
What is the slope of the line through (0, 5) and (-2, -1)
Answer:
3
Step-by-step explanation:
To find the slope of a line going through two points, (x₁, y₁) and (x₂, y₂), we can use the following formula: [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]. Note that it doesn't really matter which points we call (x₁, y₁) or (x₂, y₂).
Let's call (x₂, y₂) = (0, 5) and (x₁, y₁) = (-2, -1). Now, we can plug in the values for x, y₁, x₂, and y₂ into the formula.
We have:
[tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }=\frac{5-(-1)}{0-(-2)} =\frac{5+1}{0+2} =\frac{6}{2} =3[/tex]
Therefore, the slope of the line is 3. Hope this helps!
Pls Help WILL MARK BRAINIEST
Answer: The slope of this graph is 3.
Step-by-step explanation: Sorry my answer got deleted
i need help with number 8
Answer:
Option (3)
Step-by-step explanation:
Given inequality is,
-2x + 8 < 12
By subtraction property of Order,
-2x + 8 - 8 < 12 - 8
-2x < 4
B division property of Order,
[tex]\frac{-2x}{(-2)}<\frac{4}{(-2)}[/tex]
x > -2
Since, there is no sign of equal to ( = ) in the given inequality, starting point on a number line will be a hollow point.
And an arrow starting from point x = -2 directing towards positive integers will represent the given inequality.
Option (3) will be the answer.
in triangle ABC, the measure of angle Aequals 50 degrees. which is true about the measure of angle C?
Answer:
And....what are the options? or are we suppose to know answer that?
Answer:
could you add the options pls
the sum of the first nine terms of an arithmetic series is 162, and the sum of the first 12 terms is 288. Determine the first five terms of the series.
Answer:
[tex]\boxed{\pink{\tt \leadsto Sum \ of \ first \ five \ terms \ is \ 50 . }}[/tex]
Step-by-step explanation:
Given that , the sum of the first nine terms of an arithmetic series is 162 and the sum of the first 12 terms is 288.
[tex]\boxed{\red{\bf \bigg\lgroup For \ answer \ refer \ to \ attachment \bigg\rgroup }}[/tex]
Related Information :-• The sum of n terms of an AP is
[tex]\boxed{\orange{\sf S_n = \dfrac{n}{2}[2a+(n-1)d] }}[/tex]
• nth term of an AP is given by ,
[tex]\boxed{\blue{\sf T_n = a+(n-1)d }}[/tex]
Plssss help!!! I’ll give brainilist
Answer: 15.2x4.34=65.968
Step-by-step explanation:
Answer:60 is the answer
Step-by-step explanation: get a piece of paper put down 15 15 15 15 count the tens then count the 5 what will that be
Elena walked 12 miles. Then she walked 0.25 that distance. How far did she walk altogether? Select all that apply.
Which Equation Represents a linear Function?!! PLS
Answer:
A because it has both the slope and the y-intercept
The length of a rectangle is 3 feet more than twice the width. Find its area if its perimeter is 7 1/3?
Plssss help me fast!!!!!!!!
Answer:
3+2w=l
2(l+w)=7 1/3
2(3+2w+w)= 7 1/3
6+6w= 7 1/3
-6 both sides
6w=1 1/3
/6 both sides
w=2/9
2/9*2=4/9+3=3 4/9
4/9*3 4/9= 1 43/81
1 43/81
Although ratios can be written as a fraction, they are not fractions- what is the difference between ratios and fractions?
Answer:
ima say this in baby words bcz i dont know how to explain it otherwise sorry lol
fractions are part of an object or sum and a ratio are things comparedish?
Step-by-step explanation:
ratio: 3:4
fraction: 2/8
Answer:
ratios is like part of something i think like 1:3 = 1/3 and fractions can be divided unlike ratios
Step-by-step explanation:
Mr. Percuoco is working the fish bowl toss. He used 13.6 gallons of water to fill 40 fish bowls. If he put an equal amount of water in each one, how many gallons of water are in each fish bowl?
Answer:
0.34 gallons of water
Step-by-step explanation:
Mr Percuoco is working the fish bowl toss
He used 13.6 gallons of water to fill 40 fish bowls
Therefore the gallons of water in each fish bowl can be calculated as follows
= 13.6/40
= 0.34
Hence there are 0.34 gallons of water in each fish bowl
find the slope and the y-intercept of the line.
Answer:
Slope m = -5/4
y-intercept b = 3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Equality Properties
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
[Standard Form] -5x - 4y = -12
Step 2: Rewrite
Add 5x to both sides: -4y = 5x - 12Divide -4 on both sides: y = -5/4x + 3Step 3: Identify
Break apart the function.
Slope m = -5/4
y-intercept b = 3
Which of the following is a factor of 3x3-12x2 +X-4 ?
A. X+3
B. X+2
C. X-4
D.X-1
Answer:
B.x+2
Step-by-step explanation:
3/2+(-6/5)?? answer??
Answer:
I think The answer would be 0.3
Answer:
-3/10
Step-by-step explanation:
3/2 is equivalent to 15/10. Or 1 5/10. And 6/5 is equivalent to 18/10s or 1 8/10. Therefore 1 1/5 + (-1 8/10) = -3/10
X+y<-1jjjjjjjjjjhhhjjjjjj
Answer:
What's the problem?
Step-by-step explanation:
Makes NO sense
Put the following equation of a line into slope-intercept form, simplifying all
fractions.
4x + 10y = –20
Please help
Answer:
y=−2/5x−2
Step-by-step explanation:
Write in slope-intercept form, y = m x + b .
Use Simplex Method and Maximize 2x+3y =z
Hello!
Solve for x.
2x+3y=z
Step 1: Add -3y to both sides.
2x+3y+−3y=z+−3y
2x=−3y+z
Step 2: Divide both sides by 2.
2x/2=−3y+z/2
Answer:x= −3/2y+1/2zThank you for asking this question!
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