Answer:
[tex]600\ rupees[/tex]
Step-by-step explanation:
[tex]We\ are\ given:\\Dimensions\ of\ the\ door=2m *1m\\Dimensions\ of\ the\ wall=8.5m*2m\\Cost\ of\ whitewashing\ of\ 1m^2=40\ rupees\\Hence,\\First\ lets\ consider\ the\ wall:\\Area\ of\ a\ rectangle= Length*Width\\Here,\\Length\ of\ the\ wall=8.5\ m\\Width\ of\ the\ wall=2\ m[As\ here\ width\ and\ height\ are\ the\ same\ thing]\\Hence,\\Area\ of\ the\ wall=8.5*2=17\ m^2[/tex]
[tex]Now,\\Lets\ consider\ the\ door:\\As\ we\ know\ that,\\Area\ of\ a\ rectangle=Length*Width\\Here,\\Length\ of\ the\ door=2m\\Width\ of\ the\ door=1\ m\\Hence,\\Area\ of\ the\ door=2*1=2m^2\\\\Now,\\The\ area\ to\ be\ whitewashed=Area\ of\ the\ wall-Area\of\ the\ door\\Hence,\\The\ area\ to\ be\ whitewashed=17-2=15\ m^2\\\\As\ we\ know\ that,\\Cost\ of\ whitewashing\ 1\ m^2\ of\ the\ wall= 40\ rupees\\Hence,\\[/tex]
[tex]Cost\ of\ whitewashing\ the\ whole\ wall=Area\ of\ the\ wall\ to\ be\\ whitewashed*Rate\ of\ whitewashing\ per\ m^2\\Hence,\\Cost\ of\ whitewashing\ the\ whole\ wall=15*40=600\ rupees[/tex]
A recent poll of 1500 new home buyers found that 60% hired a moving company to help them move to their new home. Find the margin of error for this poll if we want 95% confidence in our estimate of the percentage of new home buyers who hired movers.
Answer:
The margin of error M.O.E = 2.5%
Step-by-step explanation:
Given that;
The sample size = 1500
The sample proportion [tex]\hat p[/tex] = 0.60
Confidencce interval = 0.95
The level of significance ∝ = 1 - C.I
= 1 - 0.95
= 0.05
The critical value:
[tex]Z_{\alpha/2} = Z_{0.05/2} \\ \\ Z_{0.025} = 1.96[/tex] (From the z tables)
The margin of error is calculated by using the formula:
[tex]M.O.E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1 -\hat p)}{n}}[/tex]
[tex]M.O.E = 1.96 \times \sqrt{\dfrac{\hat 0.60(1 -0.60)}{1500}}[/tex]
[tex]M.O.E = 1.96 \times \sqrt{\dfrac{0.24}{1500}}[/tex]
[tex]M.O.E = 1.96 \times \sqrt{1.6 \times 10^{-4}}[/tex]
M.O.E = 0.02479
M.O.E ≅ 0.025
The margin of error M.O.E = 2.5%
need help asap pls don’t troll!!
Answer:
smallest side is HI
Step-by-step explanation:
because the opposite side of smaller angle is always small
Answer:
HI
Step-by-step explanation:
Imagine Kiri Commented On this question (⊙_⊙)？
Answer:
That would just be magical- like let's imagine how it would turn out. :>
Step-by-step explanation:
which statement is true about the solution of this system of equations?
{x+3y=-4
3x+9y=-12
Answer:
ssdafdsdsaasd
Step-by-step explanation:
adsdasdasdsadadasds
Answer:
x=-4-3y
Step-by-step explanation:
What is the equation of the graphed line written in standard form? x – 4y = 4 x + 4y = 4 y = y equals StartFraction one-fourth EndFraction x minus 1.x – 1 y = –y equals negative StartFraction one-fourth EndFraction x minus 1.x – 1
Answer:
The answer is A
Step-by-step explanation:
I got it right
Answer:
Answer is A
Step-by-step explanation:
Help please!!!!!!!!!
Answer:
multiplied by 10 goes in the blank line.
Step-by-step explanation:
Choose the number of hours as 1.
The number on the y axis that is the number of miles is 10
So any time you have will be multiplied by 10 to get the total number of miles.
Write the ratio of dogs to cats in simplest form.
12 dogs, 16 cats
6 to 8
8 to 6
4 to 3
3 to 4
12/16 becomes 6/8 which later becomes 3/4.
So,
The ratio of dogs to cats in simplest form is 3:4 [Option 4]
Hope it helps!
Solve the equation and determine the value of t. t + 38 = 420
Answer:
t=382
Step-by-step explanation:
Answer:
382
Step-by-step explanation:
1. t=420-38
2. t=382
Quick Help! Will mark brainliest!!!
Answer:
square root of 3
Step-by-step explanation:
...................
Which point represents (-6, pi/12)?
Answer: C
Step-by-step explanation: C
The point on the polar coordinate that represents (-6, pi/12) is point C.
What is the point of the system?The point on the polar coordinate system that is equivalent to (-6, pi/12) is point C. This is the case because the value of pi/12 can be found on the cis formation to C.
In addition, multiplying the denominator by two gives us the value of 12. So, the point on this plane that is equal to (-6, pi/12) is point C. The polar coordinate system is one of the many ways of representing a complex function.
Learn more about the polar coordinate system here:
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due in an 1hr help!!
Answer:
I think its D
Step-by-step explanation:
Mark me Brainliest
A. mg- fp sin theta
B. mg-fp cos theta
c. Mg + fp sin theta
d. mg
Answer is d mg ...........
HOPE IT HELP....
Apply the algebra tiles to find (8x2 + 8x + 5) - (2x2 + 6x + 4).
A)
6x2 + 2x - 1
B)
6x2 + 2x + 1
6x? + 14x + 1
D)
10x2 + 2x + 1
9. A ranch has 575 cows on 25 acres of land. Which rate best represents the relationship
between the number of cows and the number of acres?
Answer:
10/10
Step-by-step explanation:
rearrange w=5(3a-b) + 2 to make a the subject
Answer:
w=15a-5b+2
w+5b-2=15a
(w+5b-2)/15=a
Step-by-step explanation:
The value of a in the expression w = 5(3a - b) + 2 is a = (1 + 5b - 2)/15.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given an expression w = 5(3a - b) + 2.
Now to make 'a' the subject is the same as finding the value of a.
w = 5(3a - b) + 2.
w = 15a - 5b + 2.
w + 5b - 2 = 15a.
a = (1 + 5b - 2)/15.
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What is the value of x in the equation 2(x+3) = 4(x-1)?
O 1
02
0 3
O 5
Answer:
5
Step-by-step explanation:
Five numbers have an average of 6.
Four of the numbers are 0, 1, 3, and 7.
What's the fifth number?
Answer:
1+3+0+7+x/6=6....
11+x=36...
X=36-11=25
the plane___(land) at 4 o clock this morning
Answer:
landed
landed since it has to be past tense.
Answer:
landed
Step-by-step explanation:
"this morning" suggests it is in the past tense, so past tense is needed.
47 I a) Find the values of Angles 1, 2, 3, and 4. Show your steps or explain your reasoning for each.
In the isosceles trapezoid below,
x = = [? ]°
Answer:
Step-by-step explanation:
yes
if you solve the equation,
5x+15=7x-11
26=2x
x=26/2=13
answer will be giving brainliest
Answer:
Daniele sister
Step-by-step explanation:
she right because 1 9/18 is even n have factors to it 9/8 is 1 1/9- den u can get 1 1/2 cause u simplified
im prob wrong-
Plzz help. Giving everything!!!!!!!!
Answer:
A. 25, obtuse
Step-by-step explanation:
By exterior angle theorem:
2x° = 30° + 20°
2x° = 50°
x° = 50°/2
x° = 25°
x = 25
Type of triangle: Obtuse
.Write the vertex and indicate if the graph opens up or down. y = 2x2 + 8x + 3
A. (2,5) down
B. (-2,5) up
C. (-2,-5) down
D. (-2,-5) up
Given:
The equation of the parabola is
[tex]y=2x^2+8x+3[/tex]
To find:
The vertex and check whether it opens up or down.
Solution:
We have,
[tex]y=2x^2+8x+3[/tex]
Here, leading coefficient is 2 which is a positive number. So, the parabola opens up.
The vertex of parabola [tex]f(x)=ax^2+bx+c[/tex] is
[tex]\left(\dfrac{-b}{2a},f(\dfrac{-b}{2a})\right)[/tex]
Here, a=2, b=8 and c=3.
[tex]\dfrac{-b}{2a}=\dfrac{-8}{2(2)}[/tex]
[tex]\dfrac{-b}{2a}=\dfrac{-8}{4}[/tex]
[tex]\dfrac{-b}{2a}=-2[/tex]
Putting x=-2 in the given equation.
[tex]y=2(-2)^2+8(-2)+3[/tex]
[tex]y=2(4)+(-16)+3[/tex]
[tex]y=8-16+3[/tex]
[tex]y=-5[/tex]
So, the vertex of the parabola is at (-2,-5) and parabola opens up.
Therefore, the correct option is D.
Two vectors of lengths 4 and 6 have a dot product equal to 24. Which is true about the vectors?
Answer:
1
Step-by-step explanation:
the dot product or scalar product is an algebraic operation that takes two equal-length sequences of numbers (usually coordinate vectors), and returns a single number. In Euclidean geometry , the dot product of the Cartesian coordinates of two vectors is widely used.
Answer:
C
Step-by-step explanation:
Edge 2021
pls simplify 9a+3b-4a-2b
Answer:
its 5a+b don't report my answer because its correct
Step-by-step explanation:
Answer:
5a+b
Step-by-step explanation:
A machine fills container at a constant rate of 5/8 of a box every 1/2 minute. What is the number of container per minute?
2. Solve: 7(5x-2) = 6(6x - 1).
Answer:
-8
Step-by-step explanation:
35x-14=36x-6
35x-36x=-6+14
-x=8
x=-8
g If the quantity of helium in a weather balloon in increased by a factor of 5 at constant temperature and pressure, by how much does the volume of the balloon change? Decrease by 2 times Increase by 5 times Decrease by 5 times Increase by 2 times
Answer:
Increase by 5 times
Step-by-step explanation:
Given that from the ideal gas law;
PV = nRT
P= pressure
V= volume
n= number of moles
R= gas constant
T = temperature
It the follows that;
V= nRT/P
When the number of moles (quantity of helium) is increased by a factor of 5 while temperature and pressure remain constant, we can write;
PV = 5nRT
V = 5nRT/P
Hence the volume increases by a factor of 5.
Antony and lily started moving in opposite directions from the same point at the same time. If Antony was biking with an average 12 mph speed and Lily was walking by 4 mph, how soon the distance between them will be 76 miles?
4 hours and 45 minutes
The number of miles increasing each
hour is 16, 16 times 4 is 64, and to get
to 76, you add an extra 3/4 of an hour
which is 45 minutes.
Hope it helps!
Houston’s annual salary is $89,616. He falls in the 35% tax bracket. What is his net annual salary?
Answer:
$31365.60
Step-by-step explanation: