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
aleksklad [387]
3 years ago
8

On a primary school parents were asked the number of hours they spend to help their children in home work there were 90 parents

who helped 1/2 hour to 1 1/2 hours . 20% of parents helped more than 1 1/2 hours 30% said that they helped for 1/2 hour to 1 1/2 hours per day the rest 50% did not help at all
(i)how many parents were surveyed
(ii)how many said they did not help
Mathematics
2 answers:
puteri [66]3 years ago
7 0

50 parents were surveyed

20 said they did not help

plz mark brainly

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

lilavasa [31]3 years ago
5 0

Answer:

Step-by-step explanation:

Let x be the number of parents surveyed.

30% of x = 90

\frac{30}{100}*x=90\\\\x=90*\frac{100}{30}=3*100=300\\

Total number of parents surveyed = 300

Number of parents who did not help = 50%of 300

=\frac{50}{100}*300=50*3=150

Number of parents who did not help = 150

You might be interested in
Randall’s family drove to the beach for vacation. Assume they drove the same speed throughout the trip. The first day, they drov
Vlad1618 [11]
<span>Randall’s family drove to the beach for vacation. Assume they drove the same speed throughout the trip. The first day, they drove 130miles in 22 hours. The second day, they drove 325 miles in 55 hours. The third day, they arrived at the beach by driving 390 miles in 66 hours.</span>
7 0
3 years ago
Charlotte wants to know which website gains more new subscribers per amount of content. 1) Charlotte thought of two different wa
3241004551 [841]

Answer:

1)

Number of new subscribers divided by number of posts.

Number of new subscribers divided by number of words.

2)

No. The definition have opposite results

Step-by-step explanation:

Khan academy said it was right tehee

6 0
3 years ago
Read 2 more answers
Explain why you rename 4 1/4 to find 4 1/4- 3/4​
Hitman42 [59]

Answer:

Because it is a mixed fraction and it should be renamed in order to solve your problem, for the other one CAN NOT be converted into a mixed fraction.

6 0
3 years ago
Which of the following are valid names for the given polygon?
DIA [1.3K]
<span>When naming a polygon, the letters must be connected. It shouldn't jump from one letter to the other on different sides. 
The answers for this question are A, C, D, and F.
</span><span>B doesn't work because A isn't directly connected to O.
E doesn't work because K isn't directly connected to N.</span>

7 0
3 years ago
The other 2 graphs.
aksik [14]

Answer:

D

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • How to simplify 2+1/4K-2/3K
    15·2 answers
  • If I have 20000 that earns 1280 in interest and is split between 6% and 7% how much is invested at each percent
    14·1 answer
  • ty rode his trail bike for 4.5 hours. his average speed was 12 miles per hour. how many miles did he ride?
    5·2 answers
  • If you move point B along BC how does M
    14·2 answers
  • Which is the equation of a circle with its center at (-4,2) and a radius of 4?
    11·1 answer
  • Question 25 Janice puts a fence around her rectangular garden. The garden has a length that is 9 feet less than 3 times its widt
    6·1 answer
  • Simplify: 6(m+3n)-(7+4n)
    6·1 answer
  • If there are 81 students is the band<br> how many boys are in the band
    11·2 answers
  • What is the mean of this data: 23, 37, 11, 58, 13, 45
    11·2 answers
  • Which cost is greater for the company, the intial costs or the reimbursements? by how much? Justify your answer by writing and e
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!