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
zzz [600]
2 years ago
5

HELP HURRY WILL GIVE BRAINLIEST

Mathematics
1 answer:
rusak2 [61]2 years ago
3 0

Answer:

That's all you're doing is writing the equation for two lines and finding out where they intersect. The slope is how much the price is increasing or decreasing and the y-intercept is where the price is starting at.

x = number of hours

y = mx + b = 0.12(x + 3) + 15.21     {It's (x + 3) because we have to add the 3 hours between 9 and noon}

y = mx + b = -0.11x + 15.96       {The slope is negative because the price is decreasing}

Set them equal to each other

0.12(x+3) + 15.21 = -0.11x + 15.96

Now solve for x

0.12x + 0.36 + 15.21 = -0.11x + 15.96

0.12x + 15.57 = -0.11x + 15.96

0.12x + 0.11x = 15.96 - 15.57

0.23x = 0.39

x = 0.38 / 0.23 = 1.7 hours

Convert 0.7 into minutes

0.7 hours * (60 min / 1 hour) = 42 min

So the prices are the same 1 hour and 42 min after noon, which is 1:42 PM

Step-by-step explanation:

You might be interested in
Plz help ASAP!! Explain your answer! I will mark at brainliest!!!
Vera_Pavlovna [14]

The room is not in shape of a square but a rectangle.

Question says Length is: 19 inches

Diagonal is: 20.6 inches

In a square all sides are equal

Rectangle has just two sides equal

3 0
3 years ago
Fourteen out of 20 teens said they eat breakfast every morning what is a reasonable prediction for the number of teens out of 12
Oksi-84 [34.3K]

Answer:

896

Step-by-step explanation:

14 of 20 teens eats breakfast every morning.

The percentage of those who eat breakfast every morning

= 14/20 x 100%

= 0.7 x 100%

= 70%

So, 70% of 20 teens eat breakfast every morning.

The reasonable prediction for the number of teens that eats breakfast every morning from 1280 teens will be 70% of 1280.

70/100 x 1280

0.7 x 1280

896

The prediction would be 896 out of 1280 teens eats breakfast every morning

8 0
3 years ago
Pls help i dont know the answer to this
Dahasolnce [82]

Answer:

4 1/12

Step-by-step explanation:

make all the denominators 12 so u can add them easier

2 1/12 + 2 4/12 + 3 2/12 = 7 7/12

nn subtract from the 11 2/3

11 8/12 - 7 7/12 = 4 1/12

7 0
2 years ago
Can sumone help me #11
Maru [420]

Answer:

25$ per month

Step-by-step explanation:

100$ was saved every 4 months so you divide that by four. You will get 25 which is your rate. (25$ per month)

5 0
3 years ago
21 is what percent of 40?
elena-s [515]

1. We assume, that the number 40 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 40, so we can write it down as 100%=40.

4. We know, that x% equals 21 of the output value, so we can write it down as x%=21.

5. Now we have two simple equations:

1) 100%=40

2) x%=21

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=40/21

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.


7. Solution for 21 is what percent of 40


100%/x%=40/21

(100/x)*x=(40/21)*x       - we multiply both sides of the equation by x

100=1.90476190476*x       - we divide both sides of the equation by (1.90476190476) to get x

100/1.90476190476=x

52.5=x

x=52.5


now we have:

21 is 52.5% of 40

6 0
3 years ago
Read 2 more answers
Other questions:
  • Rounding decimal to the nearest whole number
    14·1 answer
  • Plot three points that are solutions of the equation 2x-y=4
    13·2 answers
  • What percent of 150 is 60?
    5·2 answers
  • Solve for x:<br> 51 = 3x
    12·2 answers
  • Write as a decimal fraction of a cm (a) 5 mm (b) 8mm
    5·2 answers
  • I need to find the value of x using the similarities of the triangle
    10·1 answer
  • 7652 divided by 12.3
    7·1 answer
  • What can you determine from the tape diagram
    9·1 answer
  • A Student has 10$ to buy one notebook and as many pens as possible write and solve an eqaution to find the number of pens the st
    9·1 answer
  • I need help please!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!