[?]r=[ ]
30) 896
Divide
Answer:
29,86
Step-by-step explanation:
attached.......
Dan can dust the house in 8 hours. If Mary helps, it takes them 4 hours. Without help, how long would it take Mary to complete this job
Answer:
8 hours
Step-by-step explanation:
when sheʻs helping him theyʻre working together so 8/2= 4
when sheʻs working alone itʻll be 4 x 2 =8
Explanation:
Let's say we measure the job in terms of square feet. So let's say the house is 320 square feet.
If Dan can dust the house in 8 hours on his own, then his unit rate is 320/8 = 40 sq ft per hour.
After 4 hours, he can dust 4*40 = 160 sq ft of the house. This leaves 320-160 = 160 sq ft for Mary to handle.
Her unit rate is (160 sq ft)/(4 hrs) = 40 sq ft per hour. It's a coincidence that the two people happen to have the same unit rate (that won't always be the case). Because her unit rate is identical to Dan's rate, this means she takes the same amount of time to get the job done if she works alone.
Side note: this all assumes that the two workers do not hinder one another, or get in each others way, in any fashion. So in a sense, they split up the house down the middle.
179.873 rounded to the nearest tenth
Answer:
Hi, There!
179.9
Rounded to the nearest 0.1 or
the Tenths Place.
Step-by-step explanation:
What is the first step in solving this equation? 4x - 4 = 96
Answer:
X=25
Step-by-step explanation:
4x-4=96
4x=96+4
4x=100
4x/4=100/4
X=25
A rectangle has an area of
22 + 9x + 14
Find the expressions that represent the dimensions of the rectangle.
A (x - 2) and (x - 7)
B (x + 3) and (x + 6)
C (x + 1) and (x + 14)
D (x + 2) and (x + 7)
Answer:
D I believe
Step-by-step explanation:
Hope this helps you
Which statement is an advantage of displaying data using a histogram compared with a dotplot or stemplot?
You can display individual values.
You can precisely compute measures of center.
You can precisely compute variability.
You can choose bin width.
Answer:
D you can choose bin width
Step-by-step explanation:
just completed assignment
Answer:
D) You can choose bin width.
Step-by-step explanation:
edge 2023
if the price of 12 kg rice is rupees 180 then the price of 18 kg rice is
Answer:
270 rupees
Step-by-step explanation:
Find the cost of 1 Kg by dividing cost by 12
180 ÷ 12 = 15 rupees
Then multiply this by 18
cost of 18 Kg = 18 × 15 = 270 rupees
Hello :D
12kg = 180 rupees
180/12 = 15 rupees
1kg = 15 rupees
6 x 15 = 90 rupees.
18kg = 180 + 90 = 270
18kg = 270 rupees.
HELP PLEASE HELP PLEASE
What kind of transformation is illustrated in this figure?
A) dilation
B) rotation
C) translation
D) reflection
Answer:
reflection..........
Answer:
translation
Step-by-step explanation:
I am not sure about it
a ladder rests on a wall 2.7 meters high, the distance between the base of the ladder and the wall is 70 cm find the length of the ladder:
please
sorry if I'm wrong
Step-by-step explanation:
2.7meters = 270 cm (2.7 times 100)
70^2 + 270^2 = 77800
square root of 77800 is approx. 278.9cm or if you need a whole number do 279cm
A restaurant owner collected data about the types of items customers ordered. The table shows the probability that a customer will order each type of item when they visit the restaurant. Move words to the table to describe the likelihood of a customer ordering each item. Soft Drink Dally Special Dessert Appetizer 0.80 0.25 0.48 0.06 Probability that a customer will order Likelihood that a customer will order Certain Impossible Likely Unlikely Neither-likely nor unlikely
Using probability concepts, it is found that the matchings are:
Soft Drink - Likely.Dally Special - Unlikely.Dessert - Neither likely nor unlikely. Appetizer - very unlikely.------------------------
Probabilities assume decimal values between 0 and 1.The closer the probability is to 1, the more likely the event is to happen.------------------------
0.8 probability of a customers ordering a Soft Drink, which is a close value to 1, so Soft Drink - Likely.0.25 probability of a customer ordering a Dally Special, which is considerably less than 0.5, thus Dally Special - Unlikely.0.48 probability of a customer ordering a Dessert, which is around 0.5, thus Dessert - Neither likely nor unlikely.0.06 probability of a customer ordering an Appetizer, which is quite close to 0, so Appetizer - very unlikely.A similar problem is given at https://brainly.com/question/21408404
HELP PLEASE 25 POINTS
Answer:
Step-by-step explanation:
75g = 7.5dkg
more than
less than
Answer:
75g= 7.5dkg
445cm is greater than 0.0445dkm
10mm is smaller than 301cm
Step-by-step explanation:
1=4x+1/4 solve please i am not smart
Answer:
x = 3/16
Step-by-step explanation:
First off, you are smart :)
1 = 4x+ 1/4,
3/4 = 4x,
3/16 = x
if 2x + 5 = 1 then x =
1. -2
2. -1.5
3. 0
4. 2
5. none of these
Answer:
1. x = -2
Step-by-step explanation:
2x + 5 = 1
2x + 5 - 5 = 1 - 5
2x = -4
2x/2 = -4/2
x = -2
How is the product of 2 and 5 shown on a number line
Answer:
I agree with ELLIEDONEN I also think -10.
;))
What is the correct expansion for (x+8)^2
Answer:
Answer: x² + 16x + 64
Step-by-step explanation:
[tex] {(x + 8)}^{2} [/tex]
double the brackets, to remove the power:
[tex] = (x + 8)(x + 8)[/tex]
open the brackets:
Generally:
[tex]{ \boxed{(a + b)(a + b) = {a}^{2} + 2ab + {b}^{2} }}[/tex]
from our equation given;
a » x
b » 8
substitute in the equation in the box:
[tex](x + 8)(x + 8) = {x}^{2} + \{ 2(x)(8) \} + {(8 )}^{2} \\ \\ = {x}^{2} + 16x + 64[/tex]
Answer:
x² + 16x + 64
Step-by-step explanation:
that is the answer I think
Subtract and simplify answer.
[tex](s^2+5st-9t^2)-(2s^2-2st+2t^2)=\\\\=s^2+5st-9t^2-2s^2+2st-2t^2=\\\\=s^2-2s^2-9t^2-2t^2+5st+2st=\boxed{-s^2-11t^2+7st}[/tex]
Answer:
-s^2+7st-11t^2
Step-by-step explanation:
s^2 +5st - 9t^2 - ( 2s^2 -2st +2t^2)
Distribute the minus sign
s^2 +5st - 9t^2 - 2s^2 +2st -2t^2
Combine like terms
-s^2+7st-11t^2
Determine the height in meters of a triangle with an area of 72 square meters and a base of 28 meters.
Step-by-step explanation:
The area A of a triangle is given by
[tex]A = \frac{1}{2}bh[/tex]
where b is the length of the base and h is its height. Solving for h, we get
[tex]h = \dfrac{2A}{b} = \dfrac{2(72\:\text{m}^2)}{28\:\text{m}}[/tex]
[tex]\:\:\:\:= 5.14\:\text{m}[/tex]
Needing some help for my online class thanks
Answer:
[tex]y=1/2x+2[/tex]
Step-by-step explanation:
Know that: [tex]y=mx+b[/tex]
Starting for (0,0) count how many times you go up to the marked line (which is 2)
[tex]y=1/2x+2[/tex]
The [+] 2 is where you would start off at on the graph, with 1/2 being the slope go up one and over two.
Find the exact value for each expression:
csc^(-1) ( − √ 2 )
cos ^(-1)(sin (pi /6))
csc^(-1) ( − √ 2 ) = -√ 2s
cos ^(-1)(sin (pi /6)) = cos (1/2)
Luis buys 0.56 pound of power pasta. Mariana buys 0.27 pound of power pasta. How much do they buy in all?
Add the two amounts together:
0.56 + 0.27 = 0.83 pounds total
Luis buys 0.56 pound of power pasta. Mariana buys 0.27 pound of power pasta. How much do they buy in all?
Solution:First, understand the problem.
Luis buys 0.56 pounds of power pasta.
Mariana buys 0.27 pound of power pasta.
Then, add the bus of Luis and Mariana.
Luis buys + Mariana buys = N0.56 + 0.27 = NN = 0.83Answer:Therefore, 0.83 buy in all.Mrs. Smith's class is working on a variety of science experiments. Each
student must complete one experiment with each of the other students in
the class. There are 12 students in the class. How many different groups
will be made by the end of the experiments ? Each pair of students can
only be together once.
Answer:
66
Step-by-step explanation:
If there are n students, then the number of pairs is [tex]\frac{n(n-1)}{2}[/tex].
With 12 students, [tex]\frac{12(12-1)}{2} = \frac{132}{2}=66[/tex] pairs can be formed.
The reason the formula works is this: Each of the 12 students can be paired with 11 other students (no student is paired with him/her self). But counting 12 x 11 = 132 counts each pair twice. Example: student A can be paired with student B,..., student B can be paired with student A. The pair was counted two times.
See the attached image that shows pairings of 5 students. There are
5(5 - 1)/2 = 5(4)/2 = 10 pairs.
HELP PLS BRAINLIEST AND POINTS
sorry i keep spamming but i dont know how to do any of this
Answer:
21(5,6)
(105,126)
Option A is correct
When we multiply a vector by an scalar, it's the same as multiply all the coordinates by the same scalar, so let's suppose I have a vector "u" and multiply by the scalar "λ"
[tex]\Large\displaystyle\text{$\begin{gathered}u = \left(x, y\right)\\ \\\lambda u = \left(\lambda x, \lambda y\right)\end{gathered}$}[/tex]
Just multiply everything by "λ"!
So we have
[tex]\Large\displaystyle\text{$\begin{gathered}\frac{35}{2}\left(\frac{6}{5}v\right)\end{gathered}$}[/tex]
We can simplify the fraction
[tex]\Large\displaystyle\text{$\begin{gathered}\frac{35}{2}\cdot \frac{6}{5}v\\ \\7\cdot 3 v\\ \\21 v\end{gathered}$}[/tex]
So we want to multiply v by the scalar 21, it means that we'll multiply all coordinates by 21, we know that v = (5, 6).
[tex]\Large\displaystyle\text{$\begin{gathered}21v = 21\left(5,6\right)\\ \\21v = \left(21\cdot 5,21\cdot 6\right)\\ \\21v = \left(21\cdot 5,21\cdot 6\right)\\ \\21v = \left(105,126)\\ \\\end{gathered}$}[/tex]
So
[tex]\Large\displaystyle\text{$\begin{gathered}21v = \left(105,126)\\ \\\end{gathered}$}[/tex]
Hope you liked it
Question? Ask me in the comments
Help pls and thank you
Which graph represents the system of inequalities
Under her cell phone plan, Gianna pays a flat cost of $57 per month and $3 per
gigabyte. She wants to keep her bill under $90 per month. Which inequality can be
used to determine x, the maximum number of gigabytes Gianna can use while
staying within her budget?
Answer:
3x + 57 ≤ 90
Step-by-step explanation:
Answer:
3x+57<90
Step-by-step explanation:
Have a good day :)
Let X be a random variable with the following probability distribution.
x -3 6 9
f(x) 1/6 1/2 1/3
(a) Find μg(x), where g(X)=(2X+1)2.
(b) Find the standard deviation of g(X)
It looks like you're saying
[tex]f_X(x) = \begin{cases}\dfrac16&\text{if }x=-3 \\\\ \dfrac12&\text{if }x=6\\\\\dfrac13&\text{if }x=9\\\\0&\text{otherwise}\end{cases}[/tex]
(a) Given g(X) = (2X + 1)², the mean of g(X) is
[tex]E[g(X)] = \displaystyle \sum_{x\in\{-3,6,9\}} g(x) f_X(x) \\\\ = g(-3)f_X(-3) + g(6)f_X(6)+g(9)f_X(9) = \frac{25}6 + \frac{169}2 + \frac{361}3 = \boxed{209}[/tex]
(b) First compute the second moment of g(X) :
[tex]E[g(X)^2] = \displaystyle \sum_{x\in\{-3,6,9\}} g(x)^2 f_X(x) \\\\ = g(-3)^2f_X(-3) + g(6)^2f_X(6)+g(9)^2f_X(9) = \frac{625}{6} + \frac{28561}{2} + \frac{130321}{3} = 57825[/tex]
Then the variance of g(X) is
[tex]\mathrm{Var}[g(X)] = E[g(X)^2] - E[g(X)]^2 = 57825 - 209^2 = 14144[/tex]
The standard deviation is the square root of the variance:
[tex]\sqrt{\mathrm{Var}[g(X)]} = \sqrt{14144} \approx \boxed{118.93}[/tex]
These two figures are the image and pre-image of a
dilation.
Answer:
I believe it is 8m
Step-by-step explanation:
because 4 went up 2 so that is now 6 so if 6 goes up 2 then it would be 8
11/12-2/9 help plasssss
Answer:
hope this helps and have a great dayyyyyy
Please Help! I will give you a lot of points and the brainiest if you do!
--This is Hindu-Arabic math so you have to use this numbers system. The chart that says; 0, 1, 2, 3... and so on is what must be used to answer the question (The one that has the six symbols listed vertically )
Answer:
33
Step-by-step explanation:
10+9+0+1+13=33
it may help
Convert the arabic signs to no
[tex]\\ \sf\longmapsto 10+9+17+1+0+13[/tex]
[tex]\\ \sf\longmapsto 19+18+13[/tex]
[tex]\\ \sf\longmapsto 37+13[/tex]
[tex]\\ \sf\longmapsto 50[/tex]
Question 6
1 pts
Write the equation of a line through (-5,-5), parallel to y=
Oy=
- 1
O y=-x+4
O y=4x-1
O y=-x-1
Question 7
1 pts
Answer:
2nd, y=x-2
ignore this, just for 20char limit
Complete the following statement. 14 + 51 =
Answer:
65
Step-by-step explanation:
14 + 51 = 65
Answer:
65
Step-by-step explanation:
14 + 51 = 65.
Hope there isn't anything else to it!
