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
krek1111 [17]
3 years ago
8

Find a number if: 3/7 of it is 2 1/4

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

x=5 1/4

Step-by-step explanation:

2 1/4= \frac{9}{4}---> \frac{9}{4} divided by 3 to find 1/7x----> \frac{3}{4}=1/7x---> x=21/4---> x=5 1/4

Inessa [10]3 years ago
6 0

Answer:

The number is 5¹/₄

Step-by-step explanation:

3/7 of it is 2 ¹/₄

let the it be represented as A

3/ 7 of A = 2 ¹/₄

3A/7 = 4X2+1/4 = 9/4

3A/7= 9/4

cross multiply

3A X4 = 9x7

12A = 63

A = 63/12 = 21/4= 5¹/₄

The number is 5¹/₄

You might be interested in
10x 6x+8 Solve For X
zhannawk [14.2K]

Answer:

I had x to be 2

Step-by-step explanation:

a square has all it side to be equal

so 10x=6x+8

you will group like terms 10x-6x=8

4x=8 you divide both side by the coefficient of x which is four so X=2

7 0
3 years ago
How do i solve the question in the image provided ?
Mars2501 [29]

Answer:

0.19+0.46i and 0.19-0.46i

Step-by-step explanation:

\neq (-b+\sqrt{b^2-4ac} )/2a\\and\\(-b-\sqrt{b^2-4ac} )/2a\\\\a=8\\b=3\\c=2\\(-3+\sqrt{3^2-4*8*2} )/(2*8)\\= - 0.1875+0.463512i\\(-3-\sqrt{3^2-4*8*2} )/(2*8) = -0.1875-0.463512i

hope its right

6 0
3 years ago
How does making a list help you find common factors
Flura [38]
Is the greatest factor that two or more numbers have in common. One way to find the GCF is to make lists of the factors for two numbers and then choose the greatest factor that the two factors have in common.
6 0
3 years ago
Read 2 more answers
Your teacher gives you a number cube with numbers 1-6 on its faces. You are asked to state a theoretical probability model for r
butalik [34]

The missing part of the question is show in bold format.

Your teacher gives you a number cube with numbers 1-6 on its faces. You are asked to state a theoretical probability model for rolling it

once. Your probability model shows a probable outcome of 1/6 for each of the numbers on the cube, 1 chance for all any of the 6 numbers.

You roll it 500 times and get the following data:

Outcome 1 2 3 4 5 6

Frequency 77 92 75 90 76 90

Exercises 1–2

1. If the equality model was correct, about how many of each outcome

would you expect to see if the cube is rolled 500 times

2. Based on the data from the 500 rolls, how often were odd numbers observed? How often were even numbers observed?

Answer:

Step-by-step explanation:

1.

If the equally likely model was correct,  about how many of each outcome

would you expect to see if the cube is rolled 500 times.

The probability of rolling any of the numbers from 1 to 6 is  p(1/6)

The number of each of the outcomes expected to be seen in 500 rolls of the number cube is np

= 500 * \frac{1}{6}  \\ \\ = \frac{500}{6} \\ \\  = 83.333 \\ \\ \approx 83

2.  From the given data in the roll;

The odd numbers 1, 3 and 5, were obtained at  77, 75 and 76 times respectively.

Thus, the total number of times odd number were rolled = 77 + 75 + 76 = 228

Probability of an odd number turning up = \frac{ number \ of  \ required  \ outcome}{ total \  number  \ of  \ possible \ outcome}

= \frac{228}{500}

= 0.456

= 45.6%

The even numbers, 2, 4 and 6, were obtained 92, 90 and 90 times respectively.

The total number of times even number were rolled = 92 + 90 + 90 = 272

Probability of an even number turning up  = \frac{ number \ of  \ required  \ outcome}{ total \  number  \ of  \ possible \ outcome}

= \frac{272}{500}

= 0.544

= 54.4%

4 0
3 years ago
A child has 60 total coins. There are ten times as many nickels as there are quarters (q) and twelve more dimes than quarters. W
klio [65]

Answer:

10q+q+(12+q)=60

4 0
3 years ago
Other questions:
  • The APR of Kylee's savings account is 5.6% and the interest is compounded quarterly. If the principal in Kylee's savings account
    11·1 answer
  • The cost of three pounds of grapes is $6.57 what is the constant proportionality that relates the cost in dollars to the number
    13·2 answers
  • A sailboat depreciates at 15% of its original value each year. If the sailboat was $9500 at its time of purchase, what is the va
    9·2 answers
  • What percent of 300 is 51
    15·2 answers
  • Unit rate for 150 students in 3 classes.
    12·2 answers
  • Hi, I just have this one problem. Please explain how you got the answer as well, thanks!
    15·2 answers
  • Find the volume of the triangular prism described below.
    15·1 answer
  • Solve 7x/3&lt;2<br> {X I X&lt;6/7}<br> {X I X&gt;6/7}<br> {X I X&lt;-14/3}<br> {X I X&gt;-14/3}
    13·1 answer
  • Another easy one what is 5x1000
    14·2 answers
  • If x=-2 then write the ordered pair that is a solution of 5x-3y=-25
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!