Mathematics, 08.09.2020 03:01 glogaming16

¿Qué fracción representa el número de amigos por semana respecto del total de amigos que tiene José? *

$¿Qué fracción representa el número de amigos por semana respecto del total de amigos que tiene José$

Answers: 3

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Answers

Answer from: Eruein

The fractions which compares the number of friends per week to José's total number of friends are :

First week = 7/64Second week = 1/8Third week = 1/16Fourth week = 1/16 Fifth week = 5/64Sixth week = 1/16Seventh week = 3/64Eighth week = 5/64 Nineth week = 1/8Tenth week = 1/32Eleventh week = 7/64 Twelveth week = 7/64

We are required to compare the number of friends per week to the total number of friends :

To compare : number of friends in a given week / total number of friends

The total number of friends = 64

From the table, we could deduce that the table uses Cummulative frequency :

To compare

First week :

Number of friends = 7

Fraction = 7/64

Second week only :

Number of friends = 15 - 7 = 8

Fraction = 8/64 = 1/8

Third week only :

Number of friends = 19 - 15 = 4

Fraction = 4/64 = 1/16

Fourth week only :

Number of friends = 23 - 19 = 4

Fraction = 4/64 = 1/16

Fifth week only :

Number of friends = 28 - 23 = 5

Fraction = 5/64

Sixth week only :

Number of friends = 32 - 28 = 4

Fraction = 4/64 = 1/16

Seventh week only :

Number of friends = 35 - 32 = 3

Fraction = 3/64

Eighth week only :

Number of friends = 40 - 35 = 5

Fraction = 5/64

Nineth week only :

Number of friends = 48 - 40 = 8

Fraction = 8/64 = 1/8

Tenth week only :

Number of friends = 50 - 48 = 2

Fraction = 2/64 = 1/32

Eleventh week only :

Number of friends = 57 - 50 = 7

Fraction = 7/64

Twelveth week only :

Number of friends = 64 - 57 = 7

Fraction = 7/64

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$¿Qué fracción representa el número de amigos por semana respecto del total de amigos que tiene José?$

Answer from: hodgesr3346

See below

Step-by-step explanation:

Indicate what fraction represents the number of friends per week with respect to the total number of friends that Jose has.

The denominator of the fraction is the total number of friends which is 64.The numerator will be the number of friends for each week.

Here is each fraction:

Week >> Friends >> Fraction >> Number of new friends >>Fraction1 >>7 >> 7/64 >> 7 >> 7/642 >>15 >> 15/64 >> 8 >> 8/64 = 1/83 >>19 >> 19/64 >> 4 >> 4/64 = 1/164 >>23 >> 23/64 >> 4 >> 4/64 = 1/165 >>28 >> 28/64=7/16 >> 5 >> 5/646 >>32 >> 32/64= 1/2 >> 4 >> 4/64 = 1/167 >>35 >> 35/64 >> 3 >> 3/648 >>40 >> 40/64 = 5/8 >> 5 >> 5/649 >>48 >> 48/64 = 3/4 >> 8 >> 8/64= 1/810 >> 50 >> 50/64 = 25/32 >> 2 >> 2/64 = 1/3211 >> 57 >> 57/64 >> 7 >> 7/6412 >> 64 >> 64/64 = 1 >> 7 >> 7/64

Picture attached

Answer from: Quest

x= -3 and $x=\frac{-3+/-3i\sqrt{3} }{2}$

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

$(x^3-a^3)=$ $(x-a)(x^2+ax+a^2)$

where a is the cube root of $a^3$ .

here this is 27 and the cube root of 27 is 3. so we write using the form:

$(x-3)(x^2+(3)x+3^2)\\(x-3)(x^2+3x+9)$ .

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}$

where a = 1, b=3, and c=9

$x=\frac{-3+/-\sqrt{3^2-4(1)(9)} }{2(1)} \\x=\frac{-3+/-\sqrt{9-36)} }{2} \\x=\frac{-3+/-\sqrt{-27)} }{2}\\x=\frac{-3+/-3i\sqrt{3} }{2}$

this cubic has two complex roots.

Answer from: Quest

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

Which product is shown on this number line

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