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
Elza [17]
1 year ago
12

A random sample of students were surveyed as to how much non-school screen time

Mathematics
1 answer:
GaryK [48]1 year ago
3 0

The percentage of students who spend less than 4 hours a week on screens which reported a grade average below 80 is 50%

Given, we have the report representing children spending time online, on social media or watching T.V, which has there effect on there grades as above or below 80.

By the question we know that the number of students who spends less than 4 hours a week on screen is:

9 + 9

= 18

And among the 18 students there are 9 students whose grade average is below 80.

So the percentage of the students who spends 4 hours a week on screen is:

= 9 ÷ 18 × 100%

= 100/2

= 50%

hence 50% students spend less than 4 hours a week on screens.

Learn more about Percentage here:

brainly.com/question/843074

#SPJ1

You might be interested in
Find the Area of the figure below, composed of a rectangle and a semicircle. There radius of the circle is shown. Round to the n
DochEvi [55]

Answer: 149.3

Step-by-step explanation:

5 0
3 years ago
Simplify square root of 484
zhannawk [14.2K]

Answer:

22

Step-by-step explanation:

484 = 2^2 × 11^2

√484 = 2×11 = 22

3 0
3 years ago
Solve the inequality.<br>–5r+3≥-2​
andrew-mc [135]

Answer:

the answer is r<1 that's the inequality

5 0
3 years ago
Show that x = -2 is a solution of 3x² + 13x + 14 = 0​
Oliga [24]

Answer:

x= -2 is correct answer

Step-by-step explanation:

3(-2×-2)+13(-2)+14=0

3(4)+13(-2)+14=0

12+(-26)+14=0

12-26+14=0

12+14-26=0

26-26=0

0=0

3 0
3 years ago
What is the annual interest rate if $1600 is invested for 6 years and $456 in interest is earned
sergij07 [2.7K]
Use the formula   i = p*r*t:
                                                               $456
$456 = $1600*r*6.  Solving for r, r = ----------------- = 0.0475, or 4 3/4%
                                                           ($1600)(6)
6 0
3 years ago
Other questions:
  • Can someone please help me, thanks!!
    15·1 answer
  • I need help converting decimals to fractions
    6·2 answers
  • What is the vertex of the parabola f(x) = x2 + 8x + 12?
    13·1 answer
  • Find the area of the parallelogram. Please need help very badly.
    14·1 answer
  • The gcf of two numbers less than or equal to 12 is 2. Their LCM is 20.What are the numbers?
    15·1 answer
  • Susan has 4 gallons of juice. how many cups of juice does she have?
    9·1 answer
  • Convert 86 degrees Fahrenheit to degrees Celsius. A. 48°C B. 30°C C. 60°C D. 192°C
    8·1 answer
  • How do you do this Problem using factoring (fx)=4x^2-25?
    8·1 answer
  • THE PIC IS DOWN BELOW
    14·1 answer
  • Factor2(to the power of 2)+5x−3
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!