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2 years ago

How do i write mixed numbers as an improper fraction? Explain with examples.

Mathematics

2 answers:

andre [41]2 years ago

6 0

Answer:

A mixed fraction can be written as an improper fraction by multiplying the whole number with the fraction's denominator and adding that to the numerator, and finally writing that result on top of the denominator.

Step-by-step explanation:

irinina [24]2 years ago

3 0

Answer:

You have to multiply the whole number by the denominator and then add the answer you get with the numerator.

Step-by-step explanation:

For example, the fraction 10 $\frac{1}{3}$ is a mixed number right? So then you multiply 10x3=30. Then you add 30+1=31. So then the answer would be $\frac{31}{3}$ .

Hope this helps! Please give brainlist!

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Based on sample results, a 90% confidence interval for the mean servings of fruit per day consumed by grade school children is (

Artemon [7]

Answer: 1.12

Step-by-step explanation:

The confidence interval for the mean $\mu$ and margin of error E is given by :-

$(\mu-E,\ \mu+E)$ --------------(1)

The given confidence interval : (0.21, 2.45) -------------(2)

From (1) and (2), we have

$\mu-E=0.21-------(3)\\\\\mu+E=2.45--------(4)$

Subtract equation (3) from (4), we get

$2E=2.45-0.21\\\\\Rightarrow\ 2E=2.24\\\\\Rightarrow\ E=\dfrac{2.24}{2}=1.12$

Hence, the margin of error is 1.12 .

5 0

3 years ago

Un bosque de 2 km2 está formado por hayas y pinos. Las hayas ocupan 380.000 m2 ¿Cuántos metros cuadrados ocupan los pinos?

Ivanshal [37]

Answer:

Los pinos ocupan $\\ 1620000m^{2}$ o 1 millón seiscientos veinte mil metros cuadrados.

Step-by-step explanation:

Una manera de resolver este problema es la siguiente:

$\\ 1km^{2} = 1km * 1km = 1000m * 1000m = 1000000m^{2}$

$\\ 2km^{2} = 2km * 1km = 2000m * 1000m = 2000000m^{2} = 2 * 10^{6}m^{2}$

En palabras, $\\ 2km^{2} = 2000000m^{2}$ , o dos kilómetros cuadrados son iguales a 2 millones de metros cuadrados.

Sabemos que:

Estos $\\ 2km^{2} = 2000000m^{2}$ de bosque lo ocupan hayas y pinos, y, adicionalmente,
Las hayas ocupan $\\ 380000m^{2}$ .

De esta manera, la parte que ocupan los pinos es el total del bosque menos el área ocupada por las hayas. Por lo tanto, el área ocupada por los pinos es:

$\\ 2000000m^{2} - 380000m^{2}$

$\\ 1620000m^{2}$

¿Cuántos metros cuadrados ocupan los pinos?

Los pinos ocupan, entonces, $\\ 1620000m^{2}$ o 1 millón seiscientos veinte mil metros cuadrados.

8 0

3 years ago

Choose a system of equations with the same solution as the following system:

Lina20 [59]

Answer:

Option A.

Step-by-step explanation:

We are given 6x+2y =-6 ......(1) and 3x-4y=-18 .....(2)

Solving equations (1) and (2) we get

12x+3x =-30, ⇒x= -2 and from equation (1), 2y= -6-6(-2) =6, ⇒ y=3

Therefore, the solution for the given set of equations is x= -2 and y=3

A) Solving the equations 8x+4y = -4 ....... (3)and 17x+2y =-28, we get

8x -34x = -4 -(-56) =52, ⇒-26x =52, ⇒x=-2 and from equation )(3), we get -16+4y =-4, ⇒ y=3

Therefore, the solution x=-2 and y =3 match with the original solution.

B)Solving the equations 12x + 4y = 12 ....... (4)and 21x + 2y = −36, we get

12x -42x = 12 -(-72) =84, ⇒-30x =84, ⇒x=-84/30.

Therefore, the solution x=-84/30 does not match with the original solution.

C) Solving the equations 6x + 8y = −36 ....... (4) and 15x + 6y = −60, we get 18x -60x = -108 -(-240) =132, ⇒-42x =132, ⇒x=-132/42

Therefore, the solution x=--3 do not match with the original solution.

D) Solving the equations 6x + y = 15 ....... (5) and 15x − y = −9, we get 6x +15x = 6, ⇒21x =6, ⇒x=2/7

Therefore, the solution x=2/7 do not match with the original solution.

Therefore, option A) will have the same solution. (Answer)

4 0

3 years ago

"Julie has six photos that she has taken, framed and are hanging in a row on the wall. If she wants to rearrange them so that th

erik [133]

Answer:

Julie has 6 photos that she wants to rearrange.

Two of them are fixed at the middle position.

=> There are 4 photos left for rearranging.

=> This is the permutation with n = 4, k = 4.

=> The number of ways Julie can arrange the photos:

N = 4 x 3 x 2 x 1 = 24 ways

Hope this helps!

5 0

3 years ago

I don't understand the problem.

pshichka [43]

I don't really understand it that much either but I think that the answer is A cause a rectangle has two small sides and two longer sides sooo hope this helps :D

4 0

3 years ago

Read 2 more answers