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
Sav [38]
2 years ago
10

225 students appeared at an examination. Among them, the ratio of the number of students who passed in the first and in the seco

nd division were 4.5. If 25 students passed in the third division and 29 students failed in the examination, find (i) the number of students who passed in the first and in the second division (ii) The ratio of the number of students who passed in the first second and in the third division.​
Mathematics
1 answer:
USPshnik [31]2 years ago
7 0

(i) the number of students who passed in the first and in the second division

         76+95=171 students

(ii) The ratio of the number of students who passed in the first second and in the third division.

RATIO  is    4:5:(25/19)       or          4:5: 1.3157894…….

225-29=196 (29students failed)

196-25=171. (Subtract 25 students from the 3rd division)

4x+5x= 171 (171 students from 1st and second division)

9x=171

         X=19

4x19=76        5x19= 95         1.31578.....x19= 25

You might be interested in
About 15​% of the population of a large country is allergic to pollenallergic to pollen. if two people are randomly​ selected, w
zubka84 [21]
P(allergic) = 0.15

P(both are allergic to pollen) = (0.15)² = 0.0225 (you can use the binomial probability also)

Q(NOT allergic to pollen) = 1 - 0.0225 = 0.9775
Binomial probability

Probability of NEITHER is allergic
ⁿCₓ(p)ˣ(q)ⁿ⁻ˣ
²C₀(0.15)⁰(0.9775)² = 0.9555

P(at LEAST ONE is allergic) = 1- 0.9555 = 0.0444
7 0
3 years ago
Read 2 more answers
An infinite number of ratios are equivalent to 3:8. How
Inessa05 [86]

Answer:

See below, please!

Step-by-step explanation:

There are infinite number of ratios equivalent to 3:8 because both numbers can be multiplied by a common number or divided by a common number.

For example, 9:24 would still be equivalent to 3:8 because the common number in our case is 3. See what I mean?

Hope this helped!

3 0
3 years ago
Jerry indicated that after tossing a penny 30 times, the relative frequency of heads was 0.47 (to the nearest hundredth). He ind
natali 33 [55]

Answer:

Incorrect.

Step-by-step explanation:

1 toss could not change the frequency by such a large margin 0.47 ---> 0.55.

The number of heads obtained in 30 tosses = 30 * 0.47 =  14.

So if the next toss came up heads the relative frequency of heads would be

15/31 = 0.48.

4 0
3 years ago
A boat can travel 423 miles on 47 gallons of gasoline. How much
Readme [11.4K]

Answer:

12

Step-by-step explanation:

i done the butterfly method

6 0
2 years ago
Read 2 more answers
Help and explain please and thankyouuu’!!!!!
Zarrin [17]

<em>here</em><em>,</em>

<em>f</em><em>(</em><em>x</em><em>)</em><em>=</em><em>x</em><em>-</em><em>4</em>

<em>then</em><em>,</em><em> </em><em>f</em><em>(</em><em>-</em><em>3</em><em>.</em><em>2</em><em>)</em><em>=</em><em>(</em><em>-</em><em>3</em><em>.</em><em>2</em><em>)</em><em>-</em><em>4</em>

<em>[</em><em> </em><em>replace</em><em> </em><em>the</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>x</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>e</em><em>quation</em><em> </em><em>by</em><em> </em><em>-</em><em>3</em><em>.</em><em>2</em><em>]</em>

<em>therefore</em><em>,</em><em>f</em><em>(</em><em>-</em><em>3</em><em>.</em><em>2</em><em>)</em><em>=</em><em>-</em><em>7</em><em>.</em><em>2</em><em> </em><em>answer</em><em>.</em><em>.</em><em>.</em><em>.</em>

<em>HOPE</em><em> </em><em>THIS</em><em> </em><em>HELPS</em><em> </em><em>YOU</em><em>.</em><em>HAVE</em><em> </em><em>A</em><em> </em><em>NICE</em><em> </em><em>DAY</em><em>/</em><em>NIGHT</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

3 0
2 years ago
Read 2 more answers
Other questions:
  • Helpppppp meeeee pleaseee
    11·1 answer
  • Which expressions are equivalent to log(3)3+log(3)27? A. Log10 B. 4 C. Log(3)81 D. Log3(3^4)
    6·1 answer
  • The average number of employees that call in sick for the day over the course of a year is 25. The number of employees that call
    9·1 answer
  • What number is in the "tens" place in the following: 5,280?
    14·2 answers
  • Shea makes $ 671.00 each week. how much does she make in one year?
    7·2 answers
  • Please help me (this is one questionn)
    11·1 answer
  • A company that sells widgets has to pay 1000 in one-time equipment fees and then it costs $\$0.50$ for each widget it makes. It
    12·2 answers
  • Leon is going to toss two number cubes, each labeled 1-6. What is the probability that Leon will toss a sum of 6? 1 /1 2, 1/6, 1
    9·1 answer
  • Is 12.8 greater than 12.815?
    11·2 answers
  • Use point-slope form − 1 = ( − 1) to find the equation of the line that passes through the point (−3,5) and has slope = −2 . Wri
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!