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
adoni [48]
1 year ago
11

Which pair of ratios makes a proportion?

Mathematics
1 answer:
Nana76 [90]1 year ago
6 0

Answer:

  • D. 1/4 and 9/36

Step-by-step explanation:

If two ratios make a proportion then it can be shown as:

  • a/b = c/d ⇒ ad = bc

Let's verify the answer choices with this method

A. 1/4 and 5/25

  • 1*25 = 4*5
  • 25 = 20, incorrect, not a proportion

B. 1/4 and 7/24

  • 1*24 = 4*7
  • 24 = 28, incorrect, not a proportion

C. 1/4 and 10/48

  • 1*48 = 4*10
  • 48 = 40, incorrect, not a proportion

D. 1/4 and 9/36

  • 1*36 = 4*9
  • 36 = 36, correct, this is a proportion
You might be interested in
Kyra is participating in a fundraiser walk-a-thon. She walks 2 miles in 30 minutes. If she continues to walk at the same rate, d
enyata [817]

Answer:

105

Step-by-step explanation:

105

3 0
2 years ago
Read 2 more answers
Compare one third to sixths
zhuklara [117]
In one third you would need 12 one thirds to make a whole sixth
6 0
3 years ago
Read 2 more answers
Write an equation. Let x be the unknown number.
dolphi86 [110]

Answer:

Unknown number, x=-4

Step-by-step explanation:

Forming the equation from the information provided above.  

9=2x+17

If we solve for the unknown number, we first collect like terms together.

2x=9-17

2x=-8

Divide both sides of the equal sign by 2 the coefficient of x

x=-4

3 0
3 years ago
Read 2 more answers
Sound City sells the ClearTone-400 satellite car radio. For this radio, historical sales records over the last 100 weeks show 5
Harman [31]

Answer:

μ =2.23

\sigma_x^2= 1.49

\sigma_x=1.22

Step-by-step explanation:

Radio(x)                            weeks                           P(x)

0                                         5                                 5/100 = 0.05

1                                           27                               27/100=0.27

2                                          27                                 27/100 = 0.27

3                                         27                                 27/100 = 0.27  

4                                           9                                    9/100=0.09

5                                             5                                    5/100=0.05

We know that

Mean ,μ

\mu =\sum x.P(x)

μ = 0 x 0.05 + 1 x 0.27 + 2 x 0.27 + 3 x 0.27 + 4 x 0 .09 + 5 x 0.05

μ =2.23

\sigma_x^2= \sum x^2\times P(x)-(\sum x.P(x))^2

\sigma_x^2= 0^2\times 0.05+ 1^2\times 0.27+ 2^2\times 0.27+ 3^2\times 0.27+ 4^2\times 0.09+5^2\times 0.05-2.23^2

\sigma_x^2= 1.49

\sigma_x= \sqrt{\sigma_x^2}

\sigma_x=1.22

7 0
3 years ago
A, B and C did a test, A got 3/5 of
Fiesta28 [93]
<h3>Answer:</h3>

C, B, A

<h3>Explanation:</h3>

Simply change all the numbers to decimals

  • A is .6
  • B is .62
  • C is .625

After you put them in order from greatest to least. And the anwser is .625, .62, .6. Which is C, B, A.

4 0
2 years ago
Other questions:
  • Which of the following numbers is irrational? (1 point)
    15·1 answer
  • PLEASE HELP ! Trying to make honor roll !
    7·2 answers
  • Mary takes 9 grapes from rohin and then decides to give 4 back write and subtraction problem to describe how many grapes rohin h
    8·1 answer
  • What is the equation?
    14·2 answers
  • Please answer it correctly and please show work please help me I need it
    9·1 answer
  • (4x2 - 6x + 1) divided by (x-2)
    15·1 answer
  • The wheel was first documented as being used in Mesopotamia
    8·2 answers
  • A wooden box has the shape of a rectangular prism. The inside of the box is also a rectangular prism. What is the volume of the
    9·1 answer
  • 4. The population of a town is modeled by the equation P - 165812002, where "p"
    10·1 answer
  • I dont understand can someone help?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!