Mr. K was able to spot quite a few window washers on the skyscrapers there. He asked them how long it took to wash windows on such a building. They said that each person could wash 50 windows in 1 hour.
(How long would it take the 3 workers to wash all 1000 windows on one of the skyscrapers?)
Answer:
6.7 hours
Step-by-step explanation:
If one can do 50 then three can do 150.
So 1000÷150=6.66666666666
Hope this helps
Plss I need this rnnn
Answer:
x= 65
Step-by-step explanation:
3x-15=180
add 15 both sides
3x= 195
divide by 3
x=65
Find the area of the figure.
40.8 cm2
1128 cm2
47.52 cm2
33.7 cm2
Answer:
answer is 47.52 cm2
Step-by-step explanation:
follow me please
Find the volume of the cylinder.
Answer:
Step-by-step explanation:
V=πr^2h is the equation for volume of a cylinder.
the radius is half of 50 so 50/2=25.
then 75 is the height so you plug the vaules in
V=(3.14)((25)^2)(75)
then multiply and you get 147187.5 rounded to the nearest whole number that is 147188
hope this helps :)
Help me out, math is irritating
Answer:
67958.93228
Step-by-step explanation:
P deceased by the total of q and r
Answer:
P deceased by the total of q and r
Answer:
The answer is: p-(q+r)
Hope that helps. I just did it on my test and I got it right :D
HELP ASAPPP! I WILL GIVE BRAINLEST TO THE RIGHT PERSON
Answer:
E and H are the correct answers
Step-by-step explanation:
what is the surface of a cubiod sides 2cm,3cm and 5cm?
Answer: A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.
Step-by-step explanation:
Step-by-step explanation:
2×3×2+2×5×2+3×5×2
12+20+30
=62
if a hockey ticket regular cost $25 and the sale price cost $20
Answer:
The sale price would be 20% off.
Step-by-step explanation:
I hope this helps! Have a great rest of your day!
Please please help me I will give brainileist
Answer:
26
Step-by-step explanation:
Average = all the numbers added together then divided by the amount of numbers in the equation
21+24+25+25+26+26+26+26+27+29= 255
Since there are ten numbers in this equation, divide the sum by 10
25.5
round up
26
Given 144= 12^2 which statement is true?
I’m I right ? If not can you correct me please
Answer:
I believe that you are correct.
Step-by-step explanation:
On the map, Winton ,California is located at(“ (2,10.5) in Lake Tahoe is located at (14,16). Each unit on the map equals 16.5 miles what is the approximate distance between the cities round to the nearest mile.
Answer:
The distance between the two
points on the map
is 225 units
Step-by-step explanation:
Firstly, we need to calculate the distance in units between the two locations on the map
What we have to use here is the distance formula
Mathematically, we have this as;
D = √(x2-x1)^2 + (y2-y1)^2
(x1,y1) = (2,10.5)
(x2,y2) = (14,16)
we have the distance as follows;
D = √(14-2)^2 + (16-10.5)^2
D = √(12^2 + 6.5^2)
D = √(186.25)
D = 13.65 units
now, from the question, 1 unit on the map represents a distance of 16.5 miles
thus, a distance of 13.65 units will be;
16.5 * 13.65 = 225.225
= 225 units
In December, a car salesman sold 60 cars. In January, he only sold 24. Find the percent decrease in his monthly sales.
Answer: 45.6
Step-by-step explanation:
60 - (24% × 60) =
60 - 24% × 60 =
(1 - 24%) × 60 =
(100% - 24%) × 60 =
76% × 60 =
76 ÷ 100 × 60 =
76 × 60 ÷ 100 =
4,560 ÷ 100 = 45.6
can someone please help with this? real answer only please......ive asked multiple questions today becuz i dont really understand the assignment, please help
pls help help help help help
Answer:
y = -2
Step-by-step explanation:
When the input (x) is -5, we just look at where (-5) is on the x axis and see where the line is for the y-coordinate.
The line is at -2
Theo rolls a dice 306 times.
Work out an estimate for the number of times Theo rolls an even number
i need a bit of help with this bc i’m literally not smart. no work needed, just an answer. i’ll give brainliest.
Answer:
1. y= -2
Step-by-step explanation:
i hope this helps :)
Answer:
option (3)
Step-by-step explanation:
The equation of a vertical line parallel to the y- axis is
x = c
where c is the value of the x- coordinates the line passes through.
The line passes through (- 2, - 5 ) and (- 2, - 4) with x- coordinates - 2 , then
x = - 2 ← equation of line
The wheel on a car completes
25 revolutions and travels about
35.325 meters. Rounded to the
nearest centimeter, what is the
diameter of the wheel? Use 3.14 for pi.
Answer:
Step-by-step explanation:
Let d be the diameter of the wheel.
Circumference = πd
(35.325 m)/(25 revolutions) = (1.413 m)/revolution
πd = 1.413
d = 1.413/π = 0.45 m
What’s the answer? PLEASE ! NO LINKS. thanks !
Answer:
84 [tex]cm^{2}[/tex]
Step-by-step explanation:
find the area of each shape and add them together
Kensington charges $20 per hour, h, teaching music lessons. Last year, Kensington earned $37,705, including tips, t. Given this information, which of the following equations can be used
the amount Kensington made in tips last year?
Of=37705 + 20h
O t = 37705 - 20h
Ot=37705h + 20
O = 37705h - 20
Answer:B-t=37705-20h
Step-by-step explanation:The answer is B because you need to get rid of all of the money she made working so you subtract 20 by how ever many hours she has worked
Answer:
Second option : t = 37705 - 20h
Step-by-step explanation:
I took the test
You're a quality control manager in a fruit juice company. You want to choose
a sample size for a quality check on the cans used to package the juice. From
a batch of 30,000 cans, you want a sample size that will allow you to closely
approximate the population parameters for the entire batch. Which sample
size will most likely produce the least variability among different samples?
Answer:
246.
Step-by-step explanation:
a) The 95% confidence level two-tail confidence interval for the mean value of the key index of this batch is between 98.22 and 99.78
b) The minimum sample size to achieve this is 246.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population(square root of the variance) and n is the size of the sample. So in this question,
The lower end of the interval is the sample mean subtracted by M. So it is 99 - 0.78 = 98.22
The upper end of the interval is the sample mean added to M. So it is 99 + 0.78 = 99.78.
a) The 95% confidence level two-tail confidence interval for the mean value of the key index of this batch is between 98.22 and 99.78
(b) (5 points) If we want the sampling error to be no greater than 0.5, what is the minimum sample size to achieve this based on the same confidence level with part (a)
We need a sample size of n
n is found when
Then
Rounding up
The minimum sample size to achieve this is 246.
can someone please help me.
Answer:
D = (-4,4)
E = (-4,-4)
the length from d to e is 4
Answer:
It is 3
It is 3
it is 3
it is 3
HELP PLEASE WILL MARK BRAINLIEST
Answer: I think 8?
Step-by-step explanation:
You might be adding the 6 so therefore maybe you do 6+2= 8 if the median was eqaul to 6.
If this isnt right, I'm sorry!
Answer: 1
The set is:
6 1 5 4 8 7 2 1 2 2
First: We get the median of the original set. To do this we change it from highest to lowest.
1 1 2 2 2 4 5 6 7 8
Then we take the middle number of this set which is the median
2 and 4 are the middle so the median is 3
The median of set 1 is 3
Second: We get the median of the set but with another 6 added
1 1 2 2 2 4 5 6 6 7 8
Take the middle number of this set which is the median
4
The median of set 2 is 4
From this we know the median increases by 1 if the number 6 is added!
Factor each expression completely
4x² + 6x – 40
Show your work!!!
NO LINKS PLS
Answer:
4x²+6x-40
2(2x²+3x-20) factor out 2
2(2x²+8x-5x-20) split the three into a difference
2(2x(x+4)-5x-20) factor the 2 out of first pair of parenthesis
2(2x(x+4)-5(x+4)) factor the 5 out of second pair of parenthesis
2(x+4)(2x-5) factor
= 2(x+4)(2x-5)
Step-by-step explanation:
i hope this helps :)
Hayden built a wooden sculpture with the dimensions
shown. Now he wants to paint it.
How much paint does he need?
64 in.2
96 in 2
8 in.
192 in.2
256 in.2
8 in
8 in.
Answer:
c
Step-by-step explanation:
took test & got it right
Answer:
it is C-192 in2
Step-by-step explanation:
I am 100% sure this is correct
Can someone please help me
Answer:
n/3+4=9
-4 -4
3x n/3=5x3
n=15
Step-by-step explanation:
i hope this helps :)
Is "three less than a number" equivalent to "the difference of three and a number?"
Explain your answer.
What is the perimeter, to the nearest hundredth of a unit, of polygon
ABCDE ?
Step-by-step explanation:
answer is 20.31
I'm positive
Help.me please!!!!!!
Answer:
5 seconds
Step-by-step explanation:
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Answer:
the answer is B - 96 trust me