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2 years ago

15

A family's monthly utility costs are: phone $200, electric $100, cable TV $100, water/gas $50, internet $50. By eliminating cabl

e, by what percent does the family reduce total utility cost?

1 answer:

lukranit [14]2 years ago

6 0

Answer: The total will drop by 20%

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xz_007 [3.2K]

assuming simple interest.

$\bf ~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$2000\\ r=rate\to 6.5\%\to \frac{6.5}{100}\dotfill &0.065\\ t=years\dotfill &4 \end{cases} \\\\\\ A=2000[1+(0.065)(4)]\implies A=2000(1.26)\implies A=2520$

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2 years ago

A 96 inch stick breaks into two pieces in the ratio of 3:5. How big is each piece?

Svetlanka [38]

40 cm.

let the length of the first part be 3x, second part be 4x, third part be 5x.

where x is a positive length in cm.

why 3x,4x and 5x ?

so that the ratio of lengths of the 3 parts be 3:4:5.

total length of the stick = 3x + 4x + 5x = 12x=96cm

so x=96/12 = 8cm

therefore the largest part of the stick (5x)= 5*8 =40cm

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2 years ago

Which of these ratios is NOT the same (not equivalent)? 12/4 12:3 4 to 1 24:6

Margaret [11]

The answer is A: 12/4.

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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MaRussiya [10]

Answer:

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Step-by-step explanation:

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To find k use the x and y values of the coordinate point given (- 5, 3)

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3 years ago

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