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disa [49]
3 years ago
15

-2<× and x<7

x" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
bixtya [17]3 years ago
7 0

Answer:

-2 < x < 7

Step-by-step explanation:

And implies intersection

x can be anything greater than -2 but it also has to be less than 7.

Therefore between -2 and 7

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Justin got a sack of Jelly beans in 5 different colors. Half if them were red,1/6 were green,1/6 were yellow,1/12 were orange, a
Mrrafil [7]

Answer:

Total number of Jelly beans in the sack = 72

Number of red beans = 36

Number of green beans = 12

Number of yellow beans = 12

Number of orange beans = 6

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Step-by-step explanation:

Let total number of jelly beans be =x

We are given fractions of different colors of beans. To find the exact number of beans we need to multiply the fraction with the total number of beans.

Fraction of total are red beans = \frac{1}{2}

Number of red beans = \frac{1}{2}\times x= \frac{x}{2}

Fraction of total are green beans = \frac{1}{6}

Number of green beans = \frac{1}{6}\times x= \frac{x}{6}

Fraction of total are yellow beans = \frac{1}{6}

Number of yellow beans = \frac{1}{6}\times x= \frac{x}{6}

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Number of black beans = 6

Total number of beans can be given as

\frac{x}{2}+\frac{x}{6}+\frac{x}{6}+\frac{x}{12}+6

Since we assumed total number of beans to be x, so we have.

\frac{x}{2}+\frac{x}{6}+\frac{x}{6}+\frac{x}{12}+6=x

Multiplying each term by 12 to remove fractions.

(12\times\frac{x}{2})+(12\times\frac{x}{6})+(12\times\frac{x}{6})+(12\times\frac{x}{12})+(12\times6)=12\times x

6x+2x+2x+x+72=12x

combining like terms.

11x+72=12x

Subtracting both sides by 11x

11x+72-11x=12x=11x

72=x

∴ x=72

Total number of Jelly beans in the sack = 72

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Number of green beans = \frac{1}{6}\times 72= 12

Number of yellow beans = \frac{1}{6}\times 72= 12

Number of orange beans = \frac{1}{12}\times 72= 6

number of black beans = 6

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