1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Debora [2.8K]
3 years ago
12

Lea and Marie are washing all the windows in their house. It would take Lea 80 minutes to wash the windows by herself, and it wo

uld take Marie 60 minutes to wash them by herself. Lea creates a table so she can find out how long it will take to wash the windows if they work together. What is the missing value in the table that represents the rate for Marie?
Mathematics
2 answers:
valentina_108 [34]3 years ago
4 0
The number of windows is the missing value. <span />
FinnZ [79.3K]3 years ago
4 0

Answer:

Answer:

The missing value is 1/60.

Step-by-step explanation:

Given,

The time taken by Marie to work alone = 60 days,

Since,

Thus, the work done by Marie in one day = ,

Hence, the rate of Marie = 1/60 per day,

Which is the missing value in the table.

Step-by-step explanation:

You might be interested in
To what subsets does -17 belong
Nikolay [14]
Rational number, negative, integer
5 0
3 years ago
Find the Area of the figure below, composed of an isoceles trapezoid and one
MAVERICK [17]

Answer:

the total area is 15.6 square units

Step-by-step explanation:

hello,

you can  find the total area  dividing the shape into two known shapes

total area= area of the trapezoid +area of the semicircle

then          

step one

find the area of the isosceles trapezoid using

A=\frac{a+b}{2}*h

where

a is the smaller base

b is the bigger base

h is theheight

A is the area

let

a=2

b=5

h=4

put the values into the equation

A=\frac{a+b}{2}*h\\A=\frac{5+2}{2}*4\\A=3.5*4\\A=14

Step two

find the area of the semicircle

the area of a circle is given by

A_{c}=\pi  \frac{d^{2}}{4}\\

but, we need the area of  half circle, we need divide this by 2

A_{semic}=\frac{ \pi \frac{d^{2}}{4}}{2}\\A_{semic}= \pi \frac{d^{2}}{8}

now the diameter of the semicircle is 2, put this value into the equation

A_{semic}= \pi \frac{2^{2}}{8}\\\\A_{semic}= \pi \frac{1}{2}\\ A_{semic}=\frac{\pi }{2}\\

find the total area

total area= area of the trapezoid +area of the semicircle

total\ area= 14+\frac{\pi }{2} \\total\ area=15.6

so, the total area is 15.6 square units

Have a good day.

5 0
3 years ago
rectangular piece of paper 4 cm wide length twice its width measuring 3 cm by 7 cm how many sq cm will be visible on top?
aalyn [17]
22 square centimeters
8 0
2 years ago
Luke shaded 20 squares on his hundredths grid. Bekka shaded 30 squares on her hundredths grid. write two decimals greater than L
astra-53 [7]
21.3 and 22.5. and 12.3 13.5
8 0
3 years ago
I NEED HELP QUICK
MAVERICK [17]

Answer:

m∠2= 180-30=150

m∠3= 30

m∠4=30

m∠5=150

m∠6=150

m∠7=30

Step-by-step explanation:

since these are angles of parallel lines cut by a transversal the theorems of vertical, corresponding, supplementary, and complementary angles apply.

4 0
3 years ago
Other questions:
  • Find for x: 8 times 7=x
    8·2 answers
  • Consider the given function and the given interval. f\(x\) = 2 sin\(x\) - sin\(2 x\) text(, ) [0 text(, ) pi] (a) Find the avera
    14·1 answer
  • Solve the equation for the letter d: C = pi times d
    8·2 answers
  • Use the partial product stratagy to solve 429×35?
    13·1 answer
  • To be eligible for financial aid, a student must earn at most $30,000 per year.
    11·2 answers
  • Warren has a container which holds 22 books of the same shape and size. The exact breakdown of his books is shown below:
    14·1 answer
  • Triangle PQR where P(1,4), Q(-3,-4),R(7,k) is right-angled at Q. find the value of k
    15·2 answers
  • Is 1.8L greater than 1,500 ML
    5·2 answers
  • HELP HELP HELP PLEASE
    11·1 answer
  • <img src="https://tex.z-dn.net/?f=5x%20-%204%20%3D%203x%20%2B8" id="TexFormula1" title="5x - 4 = 3x +8" alt="5x - 4 = 3x +8" ali
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!