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
luda_lava [24]
2 years ago
8

If the average of x and y is 11 and the average of x, y and z is 5, what is the value of z? ​

Mathematics
1 answer:
mixer [17]2 years ago
4 0

Answer:

z = -17

Step-by-step explanation:

If the average of x and y is 11, then;

x+y/2 = 11

x+y = 2 + 11

x+y = 22 .... 1

similarly, if average of x, y and z is 5, then;

x+y+z/3 = 5

x+y+z = 3*5

x+y+z = 15

Since x+y = 22

22 + z = 5

z  = 5 - 22

z = -17

Hence the value of z is -17

You might be interested in
Write an expression for the phrase.
vitfil [10]

Answer:

9+k-17

Step-by-step explanation:

sum of 9 and k

9+k

minus 17

9+k-17

5 0
2 years ago
Which statements are true about the ordered pair (2, 3) and the system of equations?
kifflom [539]
The answer is f when 2,3 is put in for the x and y then 18 should come out 3×2=6
4×3=12 12+6=18
7 0
3 years ago
in triangle ABC shown below, L is the midpoint of BC, M is the midpoint of AB, and N is the midpoint of AC. Find the perimeter o
alexdok [17]

35

since m and n are the midpoints of ab and ac resistively

then ,bc=2mn=16

since m and l are the midpoints of ba and bc respectively

then, ac =2mn =10

then,nc =1/2 × 10 =5

similary, mb=6

then ,perimeter=nc+mb+mn+bc=5+6+8+16=35

6 0
3 years ago
Find the mean of the following data set.<br> 42, 45, 58, 63<br> 42<br> 47<br> 52
igomit [66]
52 i believe.

42 + 45 + 58 + 63 = 208
208 / 4 = 52
6 0
3 years ago
HELP ASAP!!!.
Arte-miy333 [17]

Answer:

$54

Step-by-step explanation:

Since its $0.24 per 1 square inch, you would multiply 0.24 by the total amount of square inches. When we do this, we get 54 as our answer.\

 Hope this helps!

3 0
2 years ago
Other questions:
  • Two lines are graphed on this coordinate plane.
    15·1 answer
  • If 6x = 54, then x = ___. (Only input whole number) Numerical Answers Expected! First Person GETS BRAINLEIST
    14·2 answers
  • Casie jumped off of a cliff into the ocean while on vacation. Her height as a function of time is modeled by the equation h = −1
    11·2 answers
  • Jamal bought donuts and cupcakes. He bought three times as many donuts as cupcakes. Donuts cost $0.50 each. Cupcakes cost $1.00
    9·1 answer
  • What is the value of n? n–2=10n+4/2 n =
    11·1 answer
  • Can Someone plz help? Thx
    13·1 answer
  • I need help asap !!!!!!!!
    7·2 answers
  • Please answer correctly !!!!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!
    13·1 answer
  • ( Need Help Now!!!!!!) Noelle has four times as many apples in her grocery bag as her friends Dakota and Kylie combined. Dakota
    14·2 answers
  • What the measure of L is
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!