Mary, John and Sue are working on a large project. From past experience it is estimated that Mary would require 45 days to complete the project, John would require 50 days, and Sue would require 60 days. If they work together, what would be the estimated number of days required to complete this project?

Answers

Answer 1
About 52 days if u use the averagep

Related Questions

In triangle XYZ, what is angle m XYZ
HURRY NEEDED BY SATURDAY​

Answers

Answer:

42°

Step-by-step explanation:

the exterior angle is equal to the sum of the 2 far angles from it (from the exterior angle)

so 98-56=42°

hope you understand it

Answer:

42

Step-by-step explanation:

line TZY is a straight line

Total angles on a straight line is 180

Since angle XZT + XZY = 180

98 + XZY = 180

XZY = 82

angle XYZ + YXZ + XZY = 180

XYZ + 56 + 82 = 180

XYZ + 138 = 180

XYZ = 180 - 138

XYZ = 42

What's the perimeter?

Answers

Answer: D. 56 Units?

Explanation:
Side 1 - 9
Side 2 - 4
Side 3 - 4
Side 4 - 8
Side 5 - 11
Side 6 - 3
Side 7 - 2
Side 8 - 15

Added together: 56

Answer:

The perimeter would be 55 units

A composite figure has three congruent triangles removed from it.

What is the area of the shaded region?

O 98ft
O 128ft
O 160ft
O 192ft

Answers

What do you get when you times the answer of 8 and 8 and 16 and 16 then it might be that but if u add 2 more 8’s what is the answer to that if it matches one of the answers it could be one of those

Seth invested a certain amount of money and got back an amount of $ 8400. If
the bank paid an interest of $ 700, find the amount Sam invested. *

Answers

Answer:

$7700

Step-by-step explanation:

amount invested + interest = total

amount invested + 700 = 8400

Subtract 700 from both sides.

amount invested = 7700

Answer: $7700

y = x^2 + 6x + 4

Find the vertex
And please explain how I don't understand.

Answers

Answer:

(-3, -5) This is my answer I hope it helps

Twenty -six students are going on a field trip and 18 students are staying at school. What is the ratio of the number of students who are going on the field trip to the number of students who are staying at school?

Answers

Answer:

26 to 18

26 cause that's the number of kids goin g to the field trip to 18 cause that's all the kids staying

A helicopter flies 238 miles in 3 hours 10 minutes. Calculate the average speed.

Answers

Speed equals distance over time, put hours into minutes which is 190 minutes divide that under 238 miles which gives an average of speed of 1.25m/s

Given the following 4 numbers write a program that will determine which number is the smallest out of the 4.
Number 1 = 5, number 2 = 25, number 3 = 2, number 4 = 56

Answers

Answer:

2

Step-by-step explanation:

It's the smallest one.

The answer is number 2

PLEASE HELP THIS ASSIGNMENT IS OVER DUE

Answers

Answer:

Step-by-step explanation:

6x+3

simplified: 6x+3 (not sure if that’s what they’re asking but?)

Which fraction is equivalent to 9 12

Answers

the equivalent is 3/4. It’s reduced.

Answer:

3/4

Step-by-step explanation:

So we know that 3/4 is equivalent to 9/12, because 3×12=36 and 4×9=36. A simple way to look at how to check for equivalent fractions is to do what is called “cross-multiply”, which means multiple the numerator of one fraction by the denominator of the other fraction

Help pls i'm lost help

Answers

Answer:

Step-by-step explanation:

Okay so what I understand is that you divide it let’s take example the 1st one do the picture I think then just shade the same amount. But with more parts. Hope this helps plz tell me if I’m right if not plz tell me right answer so I learn thanks.

For the quadratic function f(x) = x2 + 8x + 12 in standard form, find the following key features:
vertex
y-intercept
Roots x =
and x =
Axis of Symmetry x =

Answers

Answer:

vertex:(−4,−4)

y-intercept:(0,12)

roots x=−2

and x= -6

AOS:-4

Step-by-step explanation:

A traveling circus with thrill rides Charge 7$ For admission $1.50 For each ride you take. If you pay $29.50 total, how many rides did you take?

Answers

Answer:

15 rides

Step-by-step explanation:

29.50 - 7 = 22.50

22.50 / 1.50 = 15

21 I think!! Hope this is right

two packages of rice cost the same amount. Which is the better buy? 12 ounce or 400 grams

Answers

Answer:

400 grams

Step-by-step explanation:

12ounce= 340.19 grams approximately

So,its best to buy the package that weighs 400 grams

What is the quotient of 1,275 divided by 5

Answers

Answer:

225

Step-by-step explanation:

1275 / 5 = 225

I know this because five can go into the 1275 225 times

Answer:255

Step-by-step explanation:

I’m not completely sure what your asking but 1275 divided by 5 is 255

Find the ratio of 15 seconds to 55 seconds

Answers

Answer:

Step-by-step explanation:

15:55

= 3:11

Triangle NOP is similar to triangle RST. Find the measure of side RS. Round your
answer to the nearest tenth if necessary. Figures are not drawn to scale

Answers

Answer:

Step-by-step explanation:

Remark

Try to make sure that when you set up your proportion, that the side you are trying to find is the numerator. Then all you have to do is multiply both sides by the numerator underneath the unknown side.

Equation

x / 11 = 27 / 7

Solution

Multiply both sides by 11

11 * x / 11 = 27 * 11 / 7

x = 297 / 7

x = 42.43

Select all equations where r=3 is a solution

R-3=0
1+ r = 2
9- r = 3
1/5r = 3
R2= 9

Answers

Answer:

the first equation

Step-by-step explanation:

the sum of three and five to the third power times five plus one

Answers

The value of the expression 3 + 5³ × 5 + 1 will be 629.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

Making anything easier to accomplish or comprehend, as well as making it less difficult, is the definition of simplification.

According to the PEMDAS rule, the operation should be performed in the order of the computation or the parentheses, whichever comes first.

The sum of three and five to the third power times five plus one will be written mathematically and will be

⇒ 3 + 5³ × 5 + 1

Simplify the expression, then the value of the expression will be

⇒ 3 + 125 × 5 + 1

⇒ 3 + 625 + 1

⇒ 629

The value of the expression 3 + 5³ × 5 + 1 will be 629.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Help quick please im down bad

Answers

hope you get an answer, sorry im no help

A roulette wheel consists of 18 red slots, 18 black slots, and 2 green slots. A player can wager $1 that a marble will land in a red slot, in which case the player would gain a $1. If the marble lands in a slot that isn't red, then the player loses their $1 wager. Let X represent the player's gain from a random $1 wager on red. Here's the probability distribution of X along with summary statistics:
Lose Win
X = gain (S) -1 1
Р(X) 20/38 18/38
Мean: Ax-$0.05
Standard deviation: ax$1.00
Suppose a player decides to wager $5 instead of winning $5.
Let Z represent the player's gain from a random $5 wager on red. possible outcomes become either losing or , so
What are the mean and standard deviation of Z? dollars?

Answers

Answer:

-$0.26 ; $5

Step-by-step explanation:

Given that :

____________ Lose ______ Win

X =$1 _______ - $1 ________ $1

P(X) _______20/ 38 _____ 18/38

Mean, Ux = - $0.05

Standard deviation, σx = $1.00

If the wager is $5 instead of $1

Mean = Σx*p(x)

Mean = (-5 * 20/38) + (5 * 18/38)

Mean = - 2.6315789 + 2.3684210

Mean (μ) = −0.26

Standard deviation :

Sqrt(Σx²p(x) - μ²)

[(-5^2)*(20/38) + (5^2)*(18/38)] - (-0.26^2)

(13.157894 + 11.842105) - 0.0676

= 24.999999 - 0.0676

= sqrt(24.932399)

= 4.9932353

= 5

The mean number of births per minute in a country in a recent year was about four. Find the probability that the number of births in any given minute is​ (a) exactly five​, ​(b) at least ​five, and​ (c) more than five.

Answers

A=0.1563

B=0.3711

C=0.2148

Alexis cell phone company charges her $35 a month for phone service plus $0.40 for each text message. How many text message does Alexis send in a month if her bill was $72?

Answers

Answer:

$92.50

Step-by-step explanation:

$72 - $35 = 37

37 / 0.40 = 92.5

Answer = $92.50

What is the area of the shaded region?

A. 3/5 sq ft
B. 5/16 sq ft
C. 5/24 sq ft
D. 3/20 sq ft

Answers

I think the correct answer is C.5/24

Answer:

B- 5/16 sq ft

Step-by-step explanation:

Their are 48 tiles total

15/48 are shaded so,

48 and 15 both go into 3,

15÷3= 5

48÷3=16

So then answer would be 5/16 sq ft

can you please help me with this question?​

Answers

Answer:

I have made it in above picture

hope it helps

ABC
180 - 28 = x

DEF
180 - 25 - 20

HELP NEEDED PLEASE HELP

There were some apples in a box. 12% of the apples were rotten.
There were 36 rotten apples in the box. How many apples were there
in the box?

Answers

Answer:

300

it is given that 12% were rotten

12% = 36

then let total no of apple be X

then , x*12/100 = 36

x= 36*100/12

x = 300

hence total apple were. = 300

hope it helps

300

If: 12 = 36
Then: 100 = X

X= 100*36/12 = 300

A triangle has side lengths of 13 cm and 6 cm. Which could be the value of the third side, 21 cm or 17 cm?

Answers

Answer:

No

FDSAdsadasdsadaaaaaaaaaaaaaaa

What is 14 2/7 x 4 3/10=

Answers

Answer:

430/ 7

Step-by-step explanation:

yess this is the correct answer

According to the DuPont 2012 Global Automotive Color Popularity Report, 23% of all cars manufactured in 2012 were white. In a random sample of 100 cars parked in long-term parking at Philadelphia International Airport, 19% of the cars were white. Identify the underlined values as parameters or statistics and give the appropriate variable. Spell out phat, x-bar, mu, sigma for the variable names. Which of the following statements istrue?

a. 19% and 23% are parameters, 100 is a statistic.
b. 23% is a parameter, 19% is a statistic.
c. 23% is a statistic, 19% is a parameter.
d. 19% and 23% are statistics, 100 is neither a parameter nor a statistic.
e. 19%, 23%, and 100 are all statistics.

Answers

Answer:

b. 23% is a parameter, 19% is a statistic.

Step-by-step explanation:

If the value is from a population, it is a parameter.

Otherwise, if the value is from a sample, it is a statistic.

23% of all cars manufactured in 2012 were white.

This is from the population(all cars), so 23% is a parameter.

In a random sample of 100 cars parked in long-term parking at Philadelphia International Airport, 19% of the cars were white.

100 is the size of the sample, which is neither a parameter, nor a statistic.

19% is from the sample of 100, so it is a statistic.

The correct answer is given by option b.

A student is solving the problem X to the power of 2+10x+ __=16+ __ my method of completing the square. What number should the student add to both sides?
A) 4
B)5
C) 25
D) 16

Answers

Answer: C) 25

Step-by-step explanation:

x²+10x+ __=16+ __

Only the square of 5, 5², which is 25, can make the two factors plus equal to 10x, so we need to add 25.

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