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
inn [45]
4 years ago
6

Please help with all part because I will brainliest plus 50 points!!

Mathematics
2 answers:
eimsori [14]4 years ago
8 0
(a) The height decreases by 12 feet each second towards the first floor
(b)
After 3 seconds, the elevator is 144 feet above the first floor
After 6 seconds, the elevator is 108 feet above the first floor
After 9 seconds, the elevator is 72 feet above the first floor
(c) It takes 15 seconds for the elevator to get to the first floor
(d) The basement floor is 48 feet below the first floor
Step-by-step explanation:
31 (a) explanation:
An elevator is 180 feet above the first floor.
Each second, it descends 12 feet.
So the elevator's change in height each second is a decrease of 12 feet towards the first floor.
31 (b) explanation:
If the elevator goes down 12 feet, towards the first floor, in 1 second then;
After 3 seconds it will be 180 feet - 3(12) feet = 144 feet above the first floor
After 6 seconds it will be 180 feet - 6(12) feet = 108 feet above the first floor
After 9 seconds it will be 180 feet - 9(12) feet = 72 feet above the first floor
31 (c) explanation:
If the elevator is 180 feet above the first floor and it takes 1 second to descend 12 feet,
Then it will take: × 1 second = 15 seconds reach the first floor.
31 (d) explanation:
From the first floor it takes 4 seconds to reach the basement floor
Therefore the basement floor is × 12 feet = 48 feet below the first floor
KonstantinChe [14]4 years ago
6 0

Answer:

sorry I can only answer b.

3 sec = 36 feet

6 sec = 72 feet

9 sec = 108 feet

You might be interested in
For the graphed exponential equation, calculate the average rate of change from x = −4 to x = 4. Possible answer choices being;
Kruka [31]
The rate of change is given by:
[f(a)-f(b)]/[a-b]
thus the rate of change from x=-4 to x=4 will be:
[f(4)-f(-4)]/(4-(-4))
=[-5-0]/[4+4]
=-5/8

Answer: -5/8
5 0
4 years ago
What is the equation of the line that is parallel to the line y = 3x - 4 and passes
lara [203]

Answer:

B. y = 3x - 14

Step-by-step explanation:

Since the line is parallel, your slope will be 3. You're given a point, so you can use point-slope form to find the equation. Point-slope form is:

y - y1 = m(x - x1) where (x1, y1) is the point that they gave you and m is the slope. So:

y - (-2) = 3(x - 4) --> Start to simplify this by changing - (-2) to +2 and distributing the 3 to (x - 4).

y + 2 = 3x - 12 --> Subtract 2 from both sides.

y = 3x - 14

6 0
3 years ago
When she checked the answer by estimating, it did not make sense. What error did Janice make?
Leokris [45]
<h2>Answer</h2>

Janice convert a mixed number to the wrong improper fraction

<h2>Explanation</h2>

To convert a mixed number to an improper fraction, we multiply the whole number by the denominator of the fraction and add the result to the numerator of the fraction; while keeping the denominator of the fraction as the denominator of the improper fraction.

Let's convert our mixed numbers to improper fractions:

To convert 10\frac{5}{6} we multiply the whole number 10 by the denominator of the fraction 6, and then we add the result to the numerator 5:

10\frac{5}{6} =\frac{(10*6)+5}{6} =\frac{60+5}{6} =\frac{65}{6}

Now let's convert 1\frac{2}{3}:

1\frac{2}{3}=\frac{(1*3)+2}{3} =\frac{3+2}{3} =\frac{5}{3}

Notice that Janice converted 1\frac{2}{3} as \frac{5}{2}, which is incorrect.

Since 1\frac{2}{3} =\frac{5}{3}, we can conclude that Janice convert a mixed number to the wrong improper fraction.

8 0
4 years ago
Read 2 more answers
An item is originally priced $68.89. It is on sale for 42 percent of the original price. Which is an estimate of the sale price?
Finger [1]

Answer:

3.50

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
How to write 63 four different ways
goldenfox [79]
1. sixty three 2.63 3. 60+3 4. 50+13 
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which equation has a constant of proportionality equal to 0.25
    8·1 answer
  • What is the slope of the line that passes through the points (-1, 2) and (-4, 3)?
    10·1 answer
  • The smaller triangle is the image of the larger triangle after a dilation. The center of the dilation is (−3,−2). What is the sc
    13·1 answer
  • Jim filled 14 holes with 2/4 ton of sand in each. about how many tons of sand did he use?
    14·2 answers
  • PLEASE HELP!!<br> What is 6.746913 rounded to the nearest tenths place?
    11·2 answers
  • Please Help! image below
    10·1 answer
  • I don’t understand how to do it
    13·1 answer
  • Which ratio is equal to 3:5?
    11·1 answer
  • Enter a value to balance the hanger
    6·1 answer
  • Points D and E are midpoints of the sides of triangle ABC. The perimeter or the triangle is 48 units. What is the value of t?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!