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
777dan777 [17]
2 years ago
15

Please I need help I will mark brainiest

Mathematics
1 answer:
kenny6666 [7]2 years ago
6 0

Answer:

sorry i looked and i tried, but i dont know the answer.

Step-by-step explanation:

You might be interested in
X = 5 -3 x is not quadratic what is the reason​
OleMash [197]

Answer:Although the Quadratic Formula always works as a strategy to solve quadratic equations, for many problems it is not the most efficient method. Sometimes it is faster to factor or complete the square or even just "out-think" the problem. For each equation below, choose the method you think is most efficient to solve the equation and explain your reason. Note that you do not actually need to solve the equation. a. x2+7x−8=0x  

2

+7x−8=0, b. (x+2)2=49(x+2)  

2

=49, c. 5x2−x−7=05x  

2

−x−7=0, d. x2+4x=−1x  

2

+4x=−1.

6 0
3 years ago
Read 2 more answers
Is 6.565656... rational?
Elza [17]

6.565656... = 6 56/99

So it's rational

Answer is YES

5 0
3 years ago
Read 2 more answers
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $22 monthly fee
vladimir2022 [97]
Company a = 22 + 0.07m
company b = 8 + 0.12m

We are looking for the time when the prices are equal. i.e. the price of company a = the price of company b

company a = company b
22 + 0.07m = 8 + 0.12m
22 - 8 = 0.12m - 0.07m
14 = 0.05m
m = 14/0.05
m = 280

Therefore, the two companies will cost the same if you talk for 280 minutes
5 0
3 years ago
PLEASE help
astraxan [27]

Answer:

The percentage of people should be seen by the doctor between 13 and

17 minutes is 68% ⇒ 2nd term

Step-by-step explanation:

* Lets explain how to solve the problem

- Wait times at a doctor's office are typically 15 minutes, with a standard

 deviation of 2 minutes

- We want to find the  percentage of people should be seen by the

 doctor between 13 and 17 minutes

* To find the percentage we will find z-score

∵ The rule the z-score is z = (x - μ)/σ , where

# x is the score

# μ is the mean

# σ is the standard deviation

∵ The mean is 15 minutes and standard deviation is 2 minutes

∴ μ = 15 , σ = 2

∵ The people should be seen by the doctor between 13 and

   17 minutes

∵ x = 13 and 17

∴ z = \frac{13-15}{2}=\frac{-2}{2}=-1

∴ z = \frac{17-15}{2}=\frac{2}{2}=1

- Lets use the standard normal distribution table

∵ P(z > -1) = 0.15866

∵ P(z < 1) = 0.84134

∴ P(-1 < z < 1) = 0.84134 - 0.15866 = 0.68268 ≅ 0.68

∵ P(13 < x < 17) = P(-1 < z < 1)

∴ P(13 < x < 17) = 0.68 × 100% = 68%

* The percentage of people should be seen by the doctor between

  13 and 17 minutes is 68%

6 0
2 years ago
Each of the past 8 days, Karen traveled 59.4 miles. How many miles did she travel in all?
madam [21]

Answer:

439.2 miles

Step-by-step explanation:

multiply the days she traveled to the amount of mile she traveled a day

8×59.4 =439.2 miles

6 0
2 years ago
Other questions:
  • The average yearly temperature T in degrees for Newport, Oregon is given by: |T−55|≤10 Find the average temperature range in deg
    9·1 answer
  • An unopened cereal box contains `15/28` cubic foot of cereal. If the box is full, and the length and height of the box are `5/7`
    6·1 answer
  • The following table shows the percentage of children in the United States between the ages of 3 and 5 who are enrolled in prepri
    6·1 answer
  • How can you could use the distributive property and mentality to find 5×198
    9·2 answers
  • The following is an incomplete paragraph proving that the opposite sides of parallelogram ABCD are congruent:
    9·2 answers
  • Find the number of 3-digit numbers formed using the digits 1 to 9, without repetition, such the numbers either have all digits l
    13·1 answer
  • The base and height of any polygon must be
    15·2 answers
  • I will give Brainliest Simplify.<br> 1/4(16a – 46) – (2a – 6)
    8·2 answers
  • amy is building a house. the basement floor is at -15 feet, The roof of the house is above the ground 25 feet. Write an inequali
    12·1 answer
  • Now who want free brain list x2​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!