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
mash [69]
2 years ago
11

The dot plot below represents how long it takes students in an 8th grade math

Mathematics
1 answer:
aleksley [76]2 years ago
6 0

Answer:

5 minutes

Step-by-step explanation:

You might be interested in
Ricardo throws a stone off a bridge into a river below. The stone's height (in meters above the water), xxx seconds after Ricard
Dominik [7]
For this case we have the following function:
 <span>w (x) = - 5 (x-8) (x + 4)
 </span><span>Rewriting we have:
 </span><span>w (x) = - 5 (x ^ 2 + 4x - 8x - 32)
 </span><span>w (x) = - 5x ^ 2 - 20x + 40x + 160
 </span><span>w (x) = - 5x ^ 2 + 20x + 160
 </span><span>Then, deriving we have:
 </span><span>w '(x) = - 10x + 20
 </span><span>We equal zero and clear x:
 </span><span>0 = -10x + 20
 </span><span>10x = 20
 </span><span>x = 20/10
 </span><span>x = 2 seconds
 </span><span>Substituting values:
 </span><span>w (2) = - 5 (2-8) (2 + 4)
 </span><span>w (2) = - 5 (-6) (6)
 </span><span>w (2) = 180 meters
 </span>Answer:
 
The maximum height that the stone will reach is:
 
w (2) = 180 meters
7 0
3 years ago
One number is 18 more than another number. The sum of the numbers is 36. find the numbers
tatuchka [14]

We can use a system of equations in order to solve for both of the numbers. Let's start off by assigning variables to each number. The bigger number can be 'x', and the smaller number can be 'y'.

We can make two equations from the given:

x = 18 + y

("One number is 18 more than another number")

x + y = 36

("The sum of the numbers is 36")

If you look at the first equation, the variable 'x' already has a value (18 + y). We can input its value into the second equation in order to solve for y:

x + y = 36

(18 + y) + y = 36

18 + 2y = 36

2y = 18

y = 9

Input the value of 'y' into the first equation:

x = 18 + y

x = 18 + 9

x = 27

<u>One number is 27 and the other number number is 9.</u>

<u></u>

Let me know if you'd like me to explain anything I did here.

- breezyツ

7 0
3 years ago
What is the value of x in the equation 6(x +11)= -300?
Kay [80]

Answer:

-61

Step-by-step explanation:

We use the distributive property to distribute 6 to both x and 11. This gives 6x+66=-300. Subtracting both sides by 66 gives 6x=-366. Dividing both sides gives x=-61.

8 0
2 years ago
Melody had 45. She spent 32.75 on a blouse . Then her mother gave her 15.50. How much money does Melody have now ?
koban [17]

Answer:

Melody have now $27.75

Step-by-step explanation:

We will proceed to solve the problem in parts so that it can be better understand

so

1) Originally Melody had $45

2) She spent $32.75 on a blouse

so

In this moment Melody has --------> $45-$32.75=$12.25

3) Her mother gave her $15.50

so

In this moment Melody has --------> $12.25+$15.50=$27.75

therefore

Melody have now $27.75

5 0
3 years ago
What is the approximate distance between the points (-2, 3, -5) and (2, -7, 4)?
tatiyna
To approximate the distance of points with three dimension, make use of the equation,

                           d = sqrt ((x2 - x1)^2 + (y2 - y1)^2 +(z2 - z1)^2)

Substituting all the data from the points given, 
                       
                    <span>d = sqrt ((2 - -2)^2 + (-7 - 3)^2 +(4 - -5)^2) = sqrt 197
</span>
Thus, the distance from the points is approximately 14.04 and that is letter D. 
               
4 0
3 years ago
Other questions:
  • Hopes dog was put on a diet and he goes from75pounds to 65pounds. What is the percent of change? Is this percentage an increase
    13·1 answer
  • Plz help question below
    9·1 answer
  • Bonnie planted a garden in her backyard. Both the garden and the backyard are right triangles. The garden is proportional to the
    11·1 answer
  • What are the fraction of the shape shaded on these three shapes?
    11·1 answer
  • Which shows a correct order to solve this story problem?
    10·2 answers
  • Is this right? if it isn't, what IS right?
    6·1 answer
  • Someone please help me with this geometry question
    15·2 answers
  • PLS HELP ASAP!!!!! I NEED THIS FASSTTT!!!!
    8·1 answer
  • Which postulate proves the two<br> triangles are congruent?
    13·1 answer
  • 1. Find the value of P, rounded to the nearest tenth.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!