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
Jlenok [28]
2 years ago
8

There are 39 people on a city bus. The ratio of adults to children is 10 : 3. At the next stop, 3 adults get off the bus. What i

s the new ratio of adults to children on the bus?
A 3 : 1

B 9 : 2

C 7 : 3

D 12 : 1​

Mathematics
1 answer:
svp [43]2 years ago
5 0

Answer:

<u>3:1</u>

Step-by-step explanation:

Looking at the numbers

39 and a ratio of 10:3 kinda scream that there are 30 adults and  9 children to me, but when 3 adults get off, that is only 36 people.

this means,

27 adults,

and

9 children

so if it doesn't look obvious enough, 9 x 3 is 27, so that means that 3: 1 must be our ratio because the 3 in  3:1 multiplied by 9 is 27 which is the number of adults, and the 1 in children multiplied by 9 is 9!

so there you have it, 27/9 = 3

and

                                    9/9=1

so

<u>3: 1</u>

You might be interested in
Can someone answer this -2(-x-1)-(x+1
Grace [21]

Answer:

x+1

Step-by-step explanation:

1.) -2(-x-1)-(x+1)

2.) -2(-x-1) = 2x+2

3.) 2x+2-(x+1)

4.) -(x+1) = -x-1

5.) 2x+2-x-1 = x+1

ANSWER: x+1

6 0
3 years ago
Factor the trinomial 5x^2-x-4
LenaWriter [7]

Answer:

<h2>(5x+4)(x-1)</h2>

Step-by-step explanation:

5x^2-x-4\\\\\mathrm{Break\:the\:expression\:into\:groups}\\=\left(5x^2+4x\right)+\left(-5x-4\right)\\\\\mathrm{Factor\:out\:}x\mathrm{\:from\:}5x^2+4x\mathrm{:\quad }x\left(5x+4\right)\\\mathrm{Factor\:out\:}-1\mathrm{\:from\:}-5x-4\mathrm{:\quad }-\left(5x+4\right)\\\\=x\left(5x+4\right)-\left(5x+4\right)\\\\\mathrm{Factor\:out\:common\:term\:}5x+4\\=\left(5x+4\right)\left(x-1\right)

6 0
3 years ago
Read 2 more answers
Consider the enlargement of the triangle. A smaller triangle with side lengths 9 millimeters and 6 millimeters. A larger triangl
Drupady [299]

Answer:45

Step-by-step explanation:

4 0
2 years ago
Adult walleye have a length with a mean of 44 cm and a standard deviation of 4 cm, and the distribution of lengths is approximat
Sloan [31]
Mean, mu=44 cm
standard deviation, sigma = 4 cm
X=41

We calculate the Z-value for 41 cm
Z(41)=(41-mu)/sigma=(41-44)/4=-0.75

The probability that x>X
P(x>X)
=P(x>41)
=1-P(x<41)
=1-0.2266274 (from standard normal distribution tables for left-tail of Z=-0.75)
= 0.7733726

4 0
3 years ago
PLEASE PLEASE HELP I will fail if I don't get this in 4 mins
IRISSAK [1]

Answer:

A: input: 10,450; output: 270

B: 10450 - 270x

C: 7750

Step-by-step explanation:

C: 10450 - 270x

10450 - 270(10)

10450 - 2700

7750

8 0
2 years ago
Other questions:
  • Find the integral of 3/sqrt of 1-4x^2
    5·1 answer
  • Which of the following shows 2x3y-3x2+7yx-12y written in standard form
    8·1 answer
  • Make x the subject of these equations. Thanks ^^
    14·2 answers
  • I have to find an equation for a table​
    12·1 answer
  • i wanna ask that if A/B 's answer is {0,1,4,5,6} then the answer of B/A 's answer will be the same or not?
    8·1 answer
  • Need done now. No links,fake answers, I don't know, and do at least one screenshot. I am in a big rush.
    12·1 answer
  • In the diagram below, what is the equation that represents the relationship between the number of triangles and the perimeter of
    13·1 answer
  • The distance to the nearest exit door is less than 150 feet.
    6·1 answer
  • Help please I will give brainlyest 9th grade lidral arts
    8·1 answer
  • The sum of two numbers is zero. One number is nine less than twice the other. Find the numbers
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!