Answer: she will need 2.8 days to finish the work.
Step-by-step explanation:
Let's define:
D = number of days.
B = rate at which Barbara paints a barn
S = rate at which Sara paints a barn
We know that Barbara can paint a barn in 5 days, then:
B*5 days = 1 barn
B = 1/5 barns per day.
And we know that Sara can paint it in 8 days, then:
S*8 days = 1 barn
S = 1/8 barns per day.
Now, when they work together, their rates are added.
Then if they work together for two days, they paint a total of:
(1/5 barns per day + 1/8 barns per day)*2 days
(8/40 barns per day + 5/40 barns per day)*2 days
(13/40 barns per day)*days = 26/40 barns
Now Sara needs to paint he other 14/40 barns in her own, she will need D days, then:
(1/8 barns per day)*D = 14/40 barns
D = (14/40 barns)/(1/8 barns per day) = (14*8/40) = 2.8 days.
So she will need 2.8 days to finish the work.
Which letter represents the sum of (–4 + 3i) and (6 – i)?
Answer:
2+2i = 2(1+i)
Step-by-step explanation:
2+2i = 2(1+i)
consider the following graphs of linear equations. which line has a positive slope?
Answer:
The following with the positive slope is line l.
LAST ONE! Simplify the following expression.
Answer:
5+5root3
Step-by-step explanation:
Answer:
5+5root3
Step-by-step explanation:
sorry if its wrong
Help please......................
Answer:
6 1/2
Step-by-step explanation:
4 1/2+2 1/2
= 9/2+5/2
=14/2
=7
Hope This Helps, BadAtMath99
Help I don’t understand the question
Answer:
g=8
Step-by-step explanation:
games to wins are the same
g:4=6:3
g=8
Answer:
2
Step-by-step explanation:
the answer is
What is the value of the expression when x=3?
4x - 4x + x*
Answer:
(4×3)-(4×3)+(4×4×4)
12-12+64
64
Answer: 3
Step-by-step explanation:
4(3) - 4(3) + 3
\/ \/
12 - 12 + 3
0 + 3 = 3
Jada has a coin jar containing n nickels and d dimes worth a total of $3.65. The
equation 0.05n + 0.1d = 3.65 is one way to represent this situation.
Which equation is equivalent to the equation 0.05n +0.1d = 3.657
Answer:5n+10d=365.7 pennies
Step-by-step explanation:
(50 POINTS) (PLEASE ANSWER THE QUESTION, NOT JUST TRY AND TAKE MY POINTS, I NEED HELP ON THIS SO DO NOT ANSWER IF YOU DO NOT KNOW OR ARE JUST TRYING TO TAKE MY POINTS)
Is there a proportional relationship between number of sandwiches and the cost of the order? Explain how you know.
(The picture shows what the relationship is now all I need to find is if it’s proportional or not, and why. Can you help me please? It’s homework, and it’s due in 5 minutes.)
Answer:
No, there is no proportional relationshipStep-by-step explanation:
The proportional relationship is:
y = kx, which is a special form of linear equation, with zero y-interceptIn the given case we have:
y = 4.5x + 10This is a linear function but not proportional relationship because it has y-intercept, different than zero
(PLEASE HELP ASAP ILL MARK BRAINIEST)
In the figure below, Triangle ABC is similar to Triangle XYZ. What is the length of YZ? Enter only the number.
Answer:
The answer would be 24
Step-by-step explanation:
8 x 3 = 24
If f(x) = 2x2 + 7, find f(-3) =
What’s the f(-3)
Answer:
replace the x with -3
Step-by-step explanation:
if you ever have f(x) = 'insert equation' and then it says find f('insert number'), you replace what ever variable is after the first 'f' with the number after the second 'f'. hope this helped!
A farmer has 3/4 acre of land. He will use all the land and plant different vegetables in 1/16 -acre sections. How many sections of vegetables will the farmer have?
Answer: 12 sections of 1/16 acre
Step-by-step explanation:
We want to find how many sections of 1/16 acre we can have in a total area of 3/4 acre.
This is equal to the quotient between 3/4 and 1/16
Remember that if we have two rational numbers (a/b) and (c/d) the quotient can be writen as:
(a/b)/(c/d) = (a/b)*(d/c) = (a*d)/(b*c)
The quotient we want to solve is:
(3/4)/(1/16) = (3/4)*(16/1) = (3*16)/4 = 12
Then you can have 12 sections of 1/16 acre
Answer:
12 sections of 1/16 acre
We want to find how many sections of 1/16 acre we can have in a total area of 3/4 acre.
This is equal to the quotient between 3/4 and 1/16
Remember that if we have two rational numbers (a/b) and (c/d) the quotient can be writen as:
(a/b)/(c/d) = (a/b)*(d/c) = (a*d)/(b*c)
The quotient we want to solve is:
(3/4)/(1/16) = (3/4)*(16/1) = (3*16)/4 = 12
Then you can have 12 sections of 1/16 acre
Step-by-step explanation:
(-7/10)=?/10 change to higher terms please help !!
Answer:
-7
Step-by-step explanation:
you cant change the numerator if you cant change the denominator
1. If you make 8 1/5 cookies in 1/4 of an hour, how many cookies can you make in one hour? Find
the unit rate.
Answer:
32.8
Step-by-step explanation:
you divide 8 1/5 by 1/4 to find the unit rate.
2/3 parts of the earth 's surface is covered with water.
(i) Express it in percent.
(II) How many percent is the continental part ?
Answer:
Water =2/3× 100%=200/3%=66.67%
So land will be 100% - 66.67%
=33.33
Ben wants to buy a baseball cap that costs $24.50. The state sales tax is 8%, or 0.08. How much will he pay in sales tax?
What is the equation of this line in slope-intercept form 2x+y =2
A. Y=2x+2
B. y=2x-2
C. y=-2x-2
D. Y=2x+2
berline.
a. -1
b. 1.75
c. -1.75
d. -2
e. -2 1/2
f.
0
Answer: I don’t get it where the question for me to read it and find the answer, you just put this
a. -1
b. 1.75
c. -1.75
d. -2
e. -2 1/2
f.
And that all you did but where is the question????
Step-by-step explanation:
What is the product of these binomials?
(x-8)(x + 3) =
O A. x2 - 11x-24
OB. x2 - 11x-5
O C. x2 - 5x-5
O D. x2 - 5x - 24
yeah
Please help me answer this
Explain you’re answer
Will give braisnlt
Answer:
C
Step-by-step explanation:
Graph C is a function because if you look at all of the graphs it is the only one that doesn't repeat a point on the same x-axis. For example, On the first graph, it shows that A has to points that has a coordinate of -2, and the rest show that too, except for C.
A pair of tow trucks are pulling on a trailer that is stuck
in mud. The first truck pulls a a pair of tow trucks are pulling on a trailer that is stuck in mud. the first truck pulls with a force of 10,000
pounds at a 110° angle from the second truck, which is
pulling with a force of 7,500 pounds. What is the
magnitude of the resultant force?
9.821 pounds
10,244 pounds
14,405 pounds
24 226 pounds
Answer:
R=10,244 Lb
Step-by-step explanation:
In order to solve this problem, we can start by drawing the situation. (See attached picture).
We can look at the forces applied by the trucks as vectors, so in this case, in order to find the resultant force, we can add the two vectors. You can do so by drawing one force after the other and join the start of the first force with the end of the second force to form a triangle. The missing side will be the resultant force. In that triangle I drew there, the inner angle will be found by subtracting 180°-110°=70°
In this case we can find the resultant force by using the law of cosines:
[tex]A^{2}=B^{2}+C^{2}-2AB cos \alpha[/tex]
so we can use the data given by the problem:
[tex]R^{2}=T_{1}^{2}+T_{2}^{2}-2T_{1}T_{2} cos \alpha[/tex]
so we can solve this for R, so we get:
[tex]R=\sqrt{T_{1}^{2}+T_{2}^{2}-2T_{1}T_{2} cos \alpha}[/tex]
now we can substitute:
[tex]R=\sqrt{(10,000Lb)^{2}+(7,500Lb)^{2}-2(10,000Lb)(7,500Lb) cos (70^{0})}[/tex]
which yields:
R=10,244Lb
Answer:b
Step-by-step explanation:
Took the test
Estimate.Solve problem
3/6+1/3=
Answer:
5/6
Step-by-step explanation:
5/6 would be the answer simplified I hope that helps :)
Answer:
5/6 which is 0.83
Step-by-step explanation:
Given: wzx and yzx are right triangles, wx = yx. Prove wxz ~= yx .....plz answer will give brainlyest!!
Answer:
The answer is below
Step-by-step explanation:
From the question,
Statement Reason
ΔWZX and ΔYZX are Given
right angled triangles
WX = YX Given
XZ ≅ XZ Reflexive property. The reflexive
property of congruence states that
any shape is congruent to itself.
∠XZW = ∠XZY Definition of right angle.
∠XWZ = ∠XYZ Definition of isosceles triangle.
Triangle XYW forms a right angled
triangle since YX = WX
∠XWZ + ∠WXZ + ∠XZW = 180° Sum of angles in triangle WZX
∠XZY + ∠XYZ + ∠YXZ = 180° Sum of angles in triangle YZX
∠XWZ + ∠WXZ + ∠XZW = Substitution
∠XZY + ∠XYZ + ∠YXZ
∠XYZ + ∠WXZ + ∠XZY = Substitution
∠XZY + ∠XYZ + ∠YXZ
∠WXZ = ∠YXZ Simplification
What is the inverse of the function f(x) = 4x + 8?
Answer:
h(x) = (1/4)x - 2 which is choice A
Step-by-step explanation:
Replace f(x) with y. Then swap x and y. Lastly, solve for y to get the inverse.
f(x) = 4x+8
y = 4x+8
x = 4y+8
x-8 = 4y
4y = x-8
y = (x-8)/4
y = x/4 - 8/4
y = (1/4)x - 2
h(x) = (1/4)x - 2
Solve for x.
x-1 is in exponential form
2^x-1 = 31
The ratio of Boy students to Girl
students is 8:9. There's 270
student Girls. How many Boys
are there?
Answer:
240 boys
Step-by-step explanation:
boys/girls = 8/9 = boys/270
so just multiply
boys= 8/9 x 270 = 240
Answer:
240
Step-by-step explanation:
270 * 8/9 = 240
so 240:270 is equivalent to 8:9
I am in desperate need of help
I will give out as many points as I can
please tell me where to place them
Wait...
This is map!
U are not supposed to be cheating in MAP!
What should managers use if they want to identify and respond in a timely manner to social and political shifts?
Answer:
They need to use issues management
Step-by-step explanation:
Due to the fact that social and political shifts are usually quite complex in terms of the possible issues that arise from them, managers are best served to use Issues management because it is an anticipatory and strategic management process which aids organizations in quick & timely detection and response to changes in the socio - political system or environment.
The sum of the interior angles of a triangle is _______. 90° 180° 270° 360°
Answer:
180
Step-by-step explanation:
Someone has at least three belts, all of his belt are white except two all of his belts are brown except two All of his belt are blue except two How many belts does he have
Answer:
Step-by-step explanation step one he has three and two so you have do math.
step two you need to do the math so,tree+two =5.
last step he has 5 so that is it
that is the steps
I GIVEEE BRAINLIST //
Answer:
-20% aka 20% decrease
Step-by-step explanation:
Answer:
450 %20
Step-by-step explanation: