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
pickupchik [31]
2 years ago
12

Statistics 4. Hol (a) The average age of 5 students is 9 years. Out of them, the ages of 4 students are 5, 7, 8, and 15 years. W

hat is the age of the remaining student? ​
Mathematics
1 answer:
olga nikolaevna [1]2 years ago
6 0

Answer:

10 years

Step-by-step explanation:

the average or mean value is the sum of all data points divided by the number of data points.

x = the unknown age of the 5th student.

average = 9 = (5 + 7 + 8 + 15 + x)/5

45 = 5 + 7 + 8 + 15 + x = 35 + x

x = 45 - 35 = 10

the 5th student is 10 years old.

You might be interested in
15 of 20 answer
expeople1 [14]

Answer:

8 bags

Step-by-step explanation:

You divided them by 20 which gives you 4. So you take the 3 and multiply by 4 which is 12 bags. And then you do the same for your bags which makes you do 2 times 4 which gives you 8. You take 20 - 12 and that leaves you with 8.

3 0
3 years ago
HELP I WILL MAEK BEAINLIST PLEASE
wolverine [178]

Answer:

260,548668 or 260.55 round to the nearest hundreds  

Step-by-step explanation:

Area of the trapezoid:

[(major base + minor base)x height]/2

[(22 + 12) x 12]/2 = 204 cm^2

radius = diameter / 2 = 12 / 2 = 6 cm

Area of a semicircle

(radius^2 x pi)/2 = (6^2 x pi)/2 = 56.548668 cm^2

total area = 204 + 56,548668 = 260,548668 cm^2

6 0
2 years ago
Help me with maths :)
8_murik_8 [283]
Sin J: 5/13, 0.38
cos J: 12/13, 0.92
tan J: 5/12, 0.42

sin K: 12/13, 0.92
cos K: 5/13, 0.38
tan K: 12/5, 2.40
6 0
2 years ago
Reflect the point (2, -4) over the y-axis. Question 1 options: (2, 4) (-2, -4) (-4, 2) (-2, 4) Question 2 will mark the brainlie
o-na [289]

Answer:

The coordinates of the image point will be (-2,-4).

Step-by-step explanation:

The reflection of the point (2,-4) over the y-axis is to be determined.

Now, as the reflecting mirror is the y-axis, then the y-coordinate of the reflecting point will not change.

So, the image point will have coordinates (h,-4).

Now, after the reflection over the y-axis, the x-coordinate of the image point will change the sign only compared to the original point.

Therefore, the coordinates of the image point will be (-2,-4). (Answer)

3 0
2 years ago
The perimeter of a rectangle is 98 m. The length of the rectangle is 9 m more than four times the width. Find the dimensions of
Olenka [21]
P=98 m 

l +9=4w

p=2l+2w

98=2(4w-9) +2w

98 = 8w-18+2w

116=10w

w=11,6 m

l = 4w-9 = 4*11,6 -9 = 46,4 -9 = 37,4 m

w=11,6 m
l= 37,4 m
3 0
3 years ago
Other questions:
  • A square with an area of 4 in² is dilated by a factor of 7.
    12·2 answers
  • Can someone show me the steps to this and answer
    6·1 answer
  • X-2y=16 and x-y=8 its a system of equation. I don't know how to do this please help.
    6·2 answers
  • Literal equation.... help me?
    12·1 answer
  • What is 0.009% of 5000? Round to the nearest hundredth (if necessary).
    8·2 answers
  • A department store in your hometown charges 9.75% tax; the stores location in your cousins hometown only charges 7.75% tax. If a
    6·1 answer
  • Which decimal is less than 0.8 and greater than 0.02
    6·1 answer
  • The number of new customers n that visit a dry cleaning shop in one year is directly related to the
    5·1 answer
  • Jeremy's password is the combination of letters and numbers shown below. He
    11·1 answer
  • I need help on this question and i will mark brainlist
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!