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
Gekata [30.6K]
3 years ago
5

Harold wrote this equation to model the level of water in a pool over time. The variable x represents time in hours. f(x) = 3,50

0 - 225x Which statements about the situation are true? Check all that apply.
The water level is rising.
The water level is falling.
The initial level of water in the pool was 3,500 units.
The initial level of water in the pool was 225 units.
The pool was empty after 14 hours.
The water was 2,600 units high after 4 hours.
Mathematics
2 answers:
Bogdan [553]3 years ago
5 0

Answer:

B,c,f

Step-by-step explanation:

lina2011 [118]3 years ago
4 0

Answer:

The water level is falling.

The initial level of water in the pool was 3,500 units

The water was 2,600 units high after 4 hours.

Step-by-step explanation:

The given function that models the water level is

f(x)=3,500-225x

where x represents time in hours.

The function represents a straight line that has slope m=-225

Since the slope is negative, it means the water level is falling.

The initial level of water in the pool can found when we put x=0 into the function.

f(0)=3,500-225(0)


f(0)=3,500, hence the initial level is 3,500.


To determine the level of water in the pool after 14 hours, we put x=14 into the equation to get;

f(14)=3,500-225(14)

f(14)=3,500-3150


f(14)=350


To determine the water level after 4 hours we put x=4

f(4)=3,500-225(4)

f(4)=3,500-900

f(14)=2,600


You might be interested in
Use pi = 3.14 to estimate the circumference of the circle to the nearest hundredth.
Nookie1986 [14]
Not enough info to answer
8 0
2 years ago
Read 2 more answers
Translate the following into an algebraic expression: the sum of a number and five, added to the difference between the same num
Kruka [31]

Answer:

It simplifies to 2x + 2.

Step-by-step explanation:

Let the number be x, then the expression is

x + 5 + (x - 3)

= x + 5 + x - 3

= x + x + 5 - 3

= 2x + 2.

4 0
3 years ago
At an airport, 76% of recent flights have arrived on time. A sample of 11 flights is studied. Find the probability that no more
I am Lyosha [343]

Answer:

The probability is  P( X \le 4 ) = 0.0054

Step-by-step explanation:

From the question we are told that

   The percentage that are on time is  p =  0.76

   The  sample size is n =  11

   

Generally the percentage that are not on time is

     q =  1- p

     q =  1-  0.76

     q = 0.24

The  probability that no more than 4 of them were on time is mathematically represented as

        P( X \le 4 ) =  P(1 ) +  P(2) + P(3) +  P(4)

=>     P( X \le 4 ) =  \left n } \atop {}} \right.C_1 p^{1}  q^{n- 1} +   \left n } \atop {}} \right.C_2p^{2}  q^{n- 2} +  \left n } \atop {}} \right.C_3 p^{3}  q^{n- 3}  +  \left n } \atop {}} \right.C_4 p^{4}  q^{n- 4}

P( X \le 4 ) =  \left 11 } \atop {}} \right.C_1 p^{1}  q^{11- 1} +   \left 11 } \atop {}} \right.C_2p^{2}  q^{11- 2} +  \left 11 } \atop {}} \right.C_3 p^{3}  q^{11- 3}  +  \left 11 } \atop {}} \right.C_4 p^{4}  q^{11- 4}

P( X \le 4 ) =  \left 11 } \atop {}} \right.C_1 p^{1}  q^{10} +   \left 11 } \atop {}} \right.C_2p^{2}  q^{9} +  \left 11 } \atop {}} \right.C_3 p^{3}  q^{8}  +  \left 11 } \atop {}} \right.C_4 p^{4}  q^{7}

= \frac{11! }{ 10! 1!}  (0.76)^{1}  (0.24)^{10} +   \frac{11!}{9! 2!}  (0.76)^2 (0.24)^{9} + \frac{11!}{8! 3!}  (0.76)^{3}  (0.24)^{8}  + \frac{11!}{7!4!}  (0.76)^{4}  (0.24)^{7}

P( X \le 4 ) = 0.0054

4 0
3 years ago
4 people are going to a dinner party. Each person at
vladimir2022 [97]

Answer:

92 pounds

Step-by-step explanation:

Here is the complete question ;

4 people are going to a dinner party. Each person at the party will eat 23 pound of cake. If you can only buy whole pounds of cake, how many pounds should you buy?

total pounds to be bought = number of people at the party x total pounds they would eat

4 x 23 = 92 pounds

7 0
3 years ago
A number c minus 3.4 is less than 14. Write this word sentence as an inequality.
Rufina [12.5K]
C - 3.4 < 14 <=== ur inequality
3 0
3 years ago
Read 2 more answers
Other questions:
  • A useful rule of thumb called the "rule of 70" states that if something grows at a constant rate of z percent per year, it doubl
    9·1 answer
  • The boiling point of a substance in City A is found to be 145 °C. The boiling point of the same substance in City B is 141 °C. W
    14·1 answer
  • I need help with #14. I checked on Desmos to see if they represent the same line, which they do. But how do you know if they rep
    8·1 answer
  • 1. (3x3 + 3x2 - 4x + 5) + (x2 – 2x + x 4) |
    5·2 answers
  • Solve and round to the nearest hundredth 5y+2y =-24
    6·2 answers
  • Find the integral of this problem
    8·1 answer
  • A faucet in a large tank can fill the tank in 12 hours. However, there is a hose in the tank which would be able to empty the ta
    9·1 answer
  • Please heeelp !! <br> Missing triangles !!
    15·2 answers
  • Students are voting on the color of T-shirts to wear on their field trip. There are 160 students-65 boys and 95 girls- going on
    15·1 answer
  • Write the unit fraction depicted in the model as a percent.<br><br> One-fourth
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!