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
MArishka [77]
3 years ago
15

A principal wants to find out how many hours per week the students in the school spend

Mathematics
1 answer:
malfutka [58]3 years ago
3 0
I think B (Every fifth student from each grade)

A only talks about female students, C talks about students on a sports team which would be biased since the students on the sports team probably get more exercise, and d would be ok but not the best since some last names are more common and others you would get only a very small sample size.
You might be interested in
Solve using substitution method x-y=11;3x+10y=-6<br> explain please
Tatiana [17]
Ok so for starters you want to choose an equation and solve for a variable.
So, I am going to choose x from the first equation.
Add y to both sides and you get x=11+y
Next, substitute 11+y for x in the other equation so you get...
2(11+y) +10y=-6
Next distribute the 2 throug the 11 and the y
22+2y+10y=-6
12y=-28
y=-28/12
reduce this fraction to make this easier.
y=-7/3
Now plug in why to either of the equations to find x
x-(-7/3)=11
x+7/3=11
x=11-(7/3)
x=(33/3)-(7/3)
x=26/3
so x = 26/3 and y = -7/3
you can also check to see if this is correct by substituting each of these values into the equations.
6 0
3 years ago
a store is giving away $10 coupons to every 7th person to enter the store and a $25 coupon to every 18th person too emter the st
almond37 [142]
7,14,21,28,35,42,49,56,63,70,77,84,91,98,105,112,119,126
18,36,54,72,90,108,126 

So the first person to get both of them is the 126th person
3 0
3 years ago
5.which of the following ordered pairs is a solution of the given system of linear equations
liq [111]

Answer:

the answer is d

Step-by-step explanation:

answers are shown

4 0
3 years ago
PLEASE I NEED HELP NOW I WILL GIVE BRAINLIEST
My name is Ann [436]
Answer is 
<span>A. 3 pages are edited every 5 min</span>
6 0
3 years ago
What's 4.3 rounded to the nearest tenth
kolezko [41]
The answer would be 4.0
4 0
3 years ago
Read 2 more answers
Other questions:
  • Find the probability of getting exactly 8 girls in 10 births
    13·1 answer
  • A flower arrangement has 8 carnations for every 4 roses. There are 14 carnations. How many roses are in the arrangement?
    11·1 answer
  • Need help on this loviesss
    10·1 answer
  • Help please with this question
    15·1 answer
  • A light bulb consumes
    5·2 answers
  • I'm having trouble finding out the answer to this question. Some please help
    5·1 answer
  • X intercept of x+y=5
    14·1 answer
  • NEED HELP ASAP !!!!!
    12·2 answers
  • Identify the domain and range of the following relation. {(7,-2), (7,4), (7,6), (7,-4), (7,1)
    13·1 answer
  • Need help with this problem
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!