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
Rzqust [24]
3 years ago
10

(urgent please help!!!!)in computing the mean of 8 numbers, a student mistakenly used 17 instead of 25 as one of the numbers and

obtained 20 as the mean. find the correct mean.
​
Mathematics
2 answers:
mamaluj [8]3 years ago
6 0
I believe the correct mean is 21!
ad-work [718]3 years ago
6 0

Answer: 21

Step-by-step explanation:

The student's mean of the 8 numbers is 20; the total of the numbers will be

8 x 20 = 160

If we take out the 17 the  total will be 160 - 17 = 143

If we then replace the 17 with 25 the total rises to 168.

168 divided by 8 = 21

You might be interested in
A cyclist cycles a distance of 40 miles in a time of 2 hours. what is her average speed?
snow_lady [41]

Answer:

see this and it by your own

Step-by-step explanation:

How do you find average speed with distance and time?

Divide the distance by the time.

This will give you the average speed per unit of time, usually hour. So, if Ben traveled 150 miles in 3 hours, his average speed is 50 miles per hour

How do you find average speed with hours and minutes?

How to calculate average speed. Speed is distance divided by time. Simply put, if you drove 60 kilometer's for one hour, it would look like this: Speed = distance (60 km) / time (1 hour) = 60km/h.

6 0
3 years ago
Can you help with this?
g100num [7]

Answer:

c or d

Step-by-step explanation:

good luck

hope this helps

need more answer? just follow me

and it will be nice if i get Brainliest!!

8 0
2 years ago
Dawn has 2 quarters, 1 nickel,<br> and one $1 bill. How much<br> money does Dawn have?
Anna007 [38]

Answer:

$1.55

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Can someone answer question 2a and b only please
Mice21 [21]

Answer:

2a)  -2

b) 8

Step-by-step explanation:

<u>Equation of a parabola in vertex form</u>

f(x) = a(x - h)² + k

where (h, k) is the vertex and the axis of symmetry is x = h

2 a)

Using the equation of a parabola in vertex form, a parabola with vertex (2, -6):  

f(x) = a(x - 2)² - 6

If one of the x-axis intercepts is 6, then

                 f(6) = 0

⇒ a(6 - 2)² - 6 = 0

⇒         16a - 6 = 0

⇒              16a = 6

⇒                  a = 6/16 = 3/8

So f(x) = 3/8(x - 2)² - 6

To find the other intercept, set f(x) = 0 and solve for x:

                    f(x) = 0

⇒ 3/8(x - 2)² - 6 = 0

⇒      3/8(x - 2)² = 6

⇒           (x - 2)² = 16

⇒              x - 2 = ±4

⇒                   x = 6,  -2

Therefore, the other x-axis intercept is -2

b)

Using the equation of a parabola in vertex form, a parabola with vertex (2, -6):  

f(x) = a(x - 2)² - 6

If one of the x-axis intercepts is -4, then

                 f(-4) = 0

⇒ a(-4 - 2)² - 6 = 0

⇒         36a - 6 = 0

⇒              36a = 6

⇒                  a = 6/36 = 1/6

So f(x) = 1/6(x - 2)² - 6

To find the other intercept, set f(x) = 0 and solve for x:

                    f(x) = 0

⇒  1/6(x - 2)² - 6 = 0

⇒       1/6(x - 2)² = 6

⇒           (x - 2)² = 36

⇒              x - 2 = ±6

⇒                   x = 8,  -4

Therefore, the other x-axis intercept is 8

8 0
2 years ago
What is the inverse of f(x) = (5x+2)^2 for x &gt; -2/5
Levart [38]

Answer:

it should be -2/5 or \frac{\sqrt{x} }{5}

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Which angle is supplementary to &lt;3
    12·1 answer
  • Rick shared his bag of grapes with his friends. He gave 2/10 of the bag to Melissa and 4/10 of the bag to Ryan. What fraction of
    7·1 answer
  • (2×100)+(9×10)+(6×1)+(3×1/10)+(8×1/100)= <br> In standard form
    13·1 answer
  • a truck traveled 8 hours at an average speed of 55 mph. how far did the truck travel? (distance = rate x time)
    5·2 answers
  • Find the 8th term in the sequence 4, -24, 144, -864,
    5·1 answer
  • For which of the following values of x does f(x) = -16?<br> -16<br> 12<br> 0<br> 8
    12·1 answer
  • 20 PTS!!!!!!!! HELPPP
    9·2 answers
  • What is bigger 3/4 or 11/16 and why?
    5·2 answers
  • What is the percent of increase from 6 to 9? Write your answer using a percent sign (%)
    6·2 answers
  • The four points (−2, 5), (−2, −1), (5, −1), and (3, 5) are the vertices of a polygon. What is the area, in square units, of this
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!