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
Lelu [443]
3 years ago
11

A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?

Mathematics
1 answer:
stealth61 [152]3 years ago
6 0
A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?

If it's 20 feet * 20 feet = to
400 sq.ft

Hope this helps!
You might be interested in
Y+4=1/2(x−2) rewrite in slope intercept form<br><br>1/2 is a fraction
Trava [24]

Answer:

y= 1/2x -5

Step-by-step explanation:

First, you multiply 1/2 with x, and 1/2 with -2, which then makes the equation

y+4=1/2x -1

then, you have to subtract 4 from both sides of the equation and combine -1 and -4, which gets you -5.

Then the equation turns out to be

y=1/2x-5

8 0
3 years ago
A group of n people enter an elevator in a building with k floors. Each person independently selects a floor uniformly at random
____ [38]

Answer:

Hence the person stop at floor by at least one person will be

E(X)=(summation from K=1 to k)[1-{(k-1)/k}^n]

Step-by-step explanation:

Given:

There are n peoples and k floors in a building.

Selects floor with 1/k probability .

To find :

Elevator stop at each floor by at least one person.

Solution:

Now

let K= number of floor at which at least one person will be stopping.

For getting E(X)

consider a variable Ak =1 if a least one person get of the elevator

and values for k=1,2,3.....k

K=(summation From k=1 to k)Ak

E(K)=((summation From k=1 to k) E[Ak]

=(summation From k=1 to k)[1-{(k-1/k)^n

Hence the person stop at floor by at least one person will be

E(K)=(summation from K=1 to k)[1-{(k-1)/k}^n]

4 0
3 years ago
where does the normal line to the ellipse x2−xy y2=3 at the point (−1,1) intersect the ellipse for the second time?
Vladimir [108]

Answer:

where does the normal line to the ellipse x2−xy y2=3 at the point (−1,1) intersect the ellipse for the second time?

Step-by-step explanation:

they Juan Carlos y los sigo pliss yyi de bvz

8 0
2 years ago
When you find 420% of 85, what are you looking for? Are you looking for the percent, the part, the whole or a ratio
maw [93]

Answer:

percent

Step-by-step explanation:

it has a percent sign

Please mark me brainliest

6 0
3 years ago
Solve problem in photo (8th math)
murzikaleks [220]
A hrhehrhrjrhrrhndndjd
4 0
2 years ago
Other questions:
  • What is .8 as a fraction and decimal?
    13·2 answers
  • What function is represented below?
    13·1 answer
  • An open rectangular tank that is 4 m long, 2 m wide
    14·1 answer
  • 5÷0.8= how do you solve this?
    7·2 answers
  • In one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the enti
    10·1 answer
  • 15 points. Please explain your answer thanks so much.:)
    8·1 answer
  • Measure of the angle ​
    6·1 answer
  • TIME REMAINING
    12·2 answers
  • Find an equation of a line parallel to the line y = 3x – 3 that contains the point (6,4).
    10·1 answer
  • 2.2 Determine the general solution of 2.2.1 3 sin x = cos x <br>2.2.2 2 cos²x + 5 sin x = 4​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!