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.
HELP WILL MARK BRainlIEST WITH EXPLANATION
[tex]Hello[/tex] [tex]There![/tex]
The answer is...
[tex]y=-8x+15.[/tex]
HERE'S THE EXPLANATION!
Let's solve for y.
[tex]8x+y=15[/tex]
Step 1: Add -8x to both sides.
[tex]8x+y+-8x=15+-8x[/tex]
[tex]y=-8x+15[/tex]
THE ANSWER!
[tex]y=-8x+15[/tex]
Hopefully, this helps you!!
[tex]AnimeVines[/tex]
Is 4.06 a rational number?
yes because it contains a decimal
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
The US consumes an average of 5.49 million metric tons of bananas per year. There are 313 million people in the US and there are 1000 kg in 1 metric ton. Round answer (except last one) to three significant digits. 365 days in a year. (1848576 with 3 SD's become 1850000= 1.85E6) How many kilogram of bananas are consumed per person in a year?
Answer:
17.7 kg hope this helps
Please help!!!!!!!! :(
Answer:
BM=26
Step-by-step explanation:
AM =BM
3x-4 = 4x -14
x=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
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
What is Q1 for this data set?
{2, 3, 5, 5, 6, 8, 8, 9, 10, 11, 11, 11, 12}
Answer:
Q1 = 5
Step-by-step explanation:
Q1 is the first quartile
Divide the data in half, that will get you Q2 or the second quartile
There are 13 data points so the middle is the 7th data point
2, 3, 5, 5, 6, 8, 8, 9, 10, 11, 11, 11, 12
Take the lower half of the data and divide it in half
There are 6 data points so the middle is between the 3rd and the 4th data point so we average them
2, 3, 5, 5, 6, 8,
(5+5)/2 = 10/2 = 5
The 1st quartile or Q1 = 5
Help someone please thanks
- 4 would be the answer
If mean of first 3 digits is 19 and next 2 digits is 18, what would be the mean of all 5 digits?
Mean of total 5 digits is 18.6
Given:
Mean of first 3 digit = 19
Mean of next 2 digit = 18
Find:
Mean of total 5 digits
Computation:
Sum of first 3 digit = Mean of first 3 digit × Number of digits
Sum of first 3 digit = 19 × 3
Sum of first 3 digit = 57
Sum of next 2 digit = Mean of first 3 digit × Number of digits
Sum of next 2 digit = 18 × 2
Sum of next 2 digit = 36
Total of 5 digit = Sum of first 3 digit + Sum of next 2 digit
Total of 5 digit = 57 + 36
Total of 5 digit = 93
Mean of total 5 digits = Total of 5 digit / 5
Mean of total 5 digits = 93 / 5
Mean of total 5 digits = 18.6
Learn more:
https://brainly.com/question/16645147?referrer=searchResults
The answer is "mean of all 5 digits is 18.6" and the further calculation can be defined as follows:
The mean would be the total number divided by the number of numbers. To obtain the mean, we add all the numbers and divide by number.It is also known as the "average" value, which was established by summing all data points then divided by the information gain amount.Its most popular statistics used to measure the center of a collection of data and analysis are the statistics sometimes referred to it as average by statistics.In this question, let the value are a,b,c..., and e So,Mean of 3 digits:
[tex]\to \bold{\frac{a+b+c}{3}}=19[/tex]
Mean of 2 digits:
[tex]\to \bold{\frac{d+e}{2}}=18[/tex]
Find:
Mean of all 5 digits =?
Calculating the sum of 3 digits:
[tex]\to \bold{\frac{a+b+c}{3}}=19\\\\\to \bold{a+b+c}=19 \times 3\\\\\to \bold{a+b+c}=57\\\\[/tex]
Calculating the sum of 2 digits:
[tex]\to \bold{\frac{d+e}{2}}=18\\\\\to \bold{d+e}=18\times 2\\\\\to \bold{d+e}=36\\\\[/tex]
Calculating the Mean of all 5 digits:
[tex]\to \bold{\frac{a+b+c+d+e}{5}}= \bold{\frac{57+36}{5}}[/tex]
[tex]= \bold{\frac{93}{5}}\\\\=\bold{18.6}[/tex]
So, the mean of all 5 digits is "18.6".
Learn more:
brainly.com/question/2003309
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
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]
i need help worth hellla pointsss it's due tonight : ,)
Answer:
Median household income | Frequency | Relative Frequency
30,000 - 39,999 2 2/51 or 3.921%
40,000 - 49,999 15 15/51 or 29.411%
50,000 - 59,999 21 21/51 or 41.176%
60,000 - 69,999 12 12/51 or 23.529%
70,000 - 79,999 1 1/51 or 1.960%
Total 51 51/51 or 100%
Que es mayor 82/42 63/21
Answer:
63/21 es mayor que 82/42
Step-by-step explanation:
82/42 ÷ 2/2 = 41/21 = 1 20/21
63/21 ÷ 7/7 = 9/3 = 3/1 = 3
3 > 1 20/21
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
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
How many significant digits should be re-
ported for the solution to the following nu-
merical problem?
(14.01 +320) x (41.9/2)
1. three
2. Zero
3. Two
4. Six
5. Five
6. One
7. Four
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.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.
A city planner designs a park that is a quadrilateral with vertices at J(−3, 1), K(3, 3), L(5, −1), and M(−1, −3). There is an entrance to the park at the midpoint of each side of the park. A straight path connects each entrance to the entrance on the opposite side. Assuming each unit of the coordinate plane represents 10 meters, what is the total length of the paths to the nearest meter? Round your answer to the nearest whole number. The total length of the paths is approximately ? meters.
Answer:
The total length of the paths is approximately [tex]50[/tex] meters.
Step-by-step explanation:
Step 1 of 3
The park is a quadrilateral with vertices J, K, L, & M, containing 4 entrances at the midpoint of each pair of vertices. (i.e. between J & K, K & L, L & M, M & J). So, you can start off this problem by finding the midpoint, or park entrance, coordinates for all four entrances.
Remember, the midpoint formula is as follows:
(this results in the coordinate of the midpoint in the form x,y)
For example: The midpoint between vertices [tex]J(-3,1) \& K(1,3)[/tex]can be found using the midpoint formula:
Step 2 of 3
The park entrances existing at the midpoint of the vertices, then, are as follows:
Entrance [tex]J-K : (-1,2)[/tex]
Entrance [tex]K-L : (3,1)[/tex]
Entrance [tex]L-M : (2,-1)[/tex]
Entrance [tex]M-J : (-2,0)[/tex]
Now, assuming you have this nicely graphed, it should be straightforward how to measure the distance of the paths connecting the entrances opposite one another. All you have to do now is use the distance formula to calculate how many units each opposite entrance is from one another.
Step 3 of 3
Distance Formula: [tex]$\sqrt{\left(X_{2}-X_{1}\right)^{2}+\left(Y_{2}-Y_{1}\right)^{2}}$[/tex]
Your answer will be the path length between Entrances at [tex](-1,2) \& (2,-1)[/tex] as well as the path length between entrances at [tex](3,1) \& (-2,0).[/tex] You will have two answers. Just remember whatever your answer comes out to, it is in graphical units (1 tick mark equals 1 unit), however, in this problem, one unit actually represents [tex]10[/tex] meters. So, pretending you end up with [tex]5[/tex] units as your answer, it will really equal [tex]50[/tex] meters.
Learn more about length, refer :
https://brainly.com/question/23049041
Denali
, North America's highest peak, is 20,310 feet above sea level. Death Valley is
282 feet below sea level. What is the difference between their two positions?
Answer:
above the sea level means height than the sea and below sea level means lower than sea height
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!
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
multiply and simplify (x+1)^3x(x+1)^4
multiply (x+1)^3 × (x+1)^4
As , the bases are same so we can add up the exponents
so the answer is (x+1)^3+4
that means (x+1)^7
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 :)
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
2 (5x + 3) = 15
After you have completed the first step to solving this problem,what should the new equation look like?
A.5x+3=17
B.5x+3=13
C.10x+3=15
D.10x+6=15
Answer:
D.10x+6=15
Step-by-step explanation:
[tex]2(5x + 3) = 15 \\ { \boxed{ \boxed{10x + 6 = 15}}}[/tex]
Help pls and thank you
Which graph represents the system of inequalities
please help me, if you help then thanks!
Answer:
1 / 2 is one side of the cube
Step-by-step explanation:
Take the cube root of 1/8 by taking the cube root of 1 which is 1 and then 8 which is 2 so equal to 1/2.
