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
andreyandreev [35.5K]
1 year ago
15

I don't understand this question

Mathematics
1 answer:
padilas [110]1 year ago
7 0

Answer:

105 rooms

Step-by-step explanation:

quarter=1/4

total rooms=140

rooms cleaned=1/4×140=35

140-35=105

therefore total rooms remaining are 105 rooms

hopes this helps

brainliest pls

You might be interested in
A track-and-field athlete releases a javelin. The height of the javelin as a function of time is shown on the graph below. Use t
Georgia [21]
Part 1:
 
 For this case we must see in the graph the axis of symmetry of the given parabola.
 We have then that the axis of symmetry is the vertical line t = 2.
 Answer:
 
The height of the javelin above the ground is symmetric about the line t = 2 seconds:

 
Part 2:

 
For this case, we must see the time t for which the javelin reaches a height of 20 feet for the first time.
 We then have that when evaluating t = 1, the function is h (1) = 20. To do this, just look at the graph.
 Then, we must observe the moment when it returns to be 20 feet above the ground.
 For this, observing the graph we see that:
 h (3) = 20 feet
 Therefore, a height of 20 feet is again reached in 3 seconds.
 Answer:
 
The javelin is 20 feet above the ground for the first time at t = 1 second and again at t = 3 seconds
5 0
3 years ago
27÷624 as partial quotient
g100num [7]

Answer:

0.04326

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Evaluate 4p+q/p when p= -2 and q= -3 <br><br>a) -11/2<br>b) 9/2 <br>c) -9/2<br>d) 11/2​
nadya68 [22]

Answer:

D

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Plutonium–238 has a yearly decay constant of 7.9 × 10-3. If an original sample has a mass of 15 grams, how long will it take to
eduard
The answer is 28 years

At = A0 * e^(-k * t)
At = 12 g
A0 = 15 g
k = 7.9 × 10^-3 = 0.0079 
t = ?

12 = 15 * e^(-0.0079 * t)
12/15 = e^(-0.0079 * t)
0.8 = e^(-0.0079 * t)

Logarithm both sides (because ln(e) = 1:
ln(0.8) = ln(e^(-0.0079 * t))
ln(0.8) = (-0.0079 * t) * ln(e)
-0.223 = -0.0079 * t
t = -0.223 / -0.0079
t = 28.23
t ≈ 28 years
8 0
3 years ago
ANSWER PLS I WILL GIVE YOU BRAINERLEST AND 5 STARS AND A THANKS PROMISE
uysha [10]

Answer:

the value is k=

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which function is represented by the graph?<br> D|-x+ 31<br> D - x + 31<br> -|x1 + 3<br> |-x] + 3
    14·1 answer
  • Fill in the blanks so that the equation has the solution of x={-4,-1}
    6·1 answer
  • Coordinate 2,4 becomes what wen you move it 2 to the right and 4 down
    15·2 answers
  • Aryana simplified the expression 3(x + 4) + 2(2x – 3). She justified her work by letting x = 3 in both the given and simplified
    13·2 answers
  • help&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;
    11·2 answers
  • ????????????????????????????????????
    12·1 answer
  • Please help me with this
    6·2 answers
  • Pleasee helpp answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!
    7·2 answers
  • Write an equation of the line below.
    12·1 answer
  • Help math exit ticket
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!