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3 years ago

13

An electrical panel has five switches. How many ways can the switches be positioned up or down if three switches must be up and

two must be down

1 answer:

nadezda [96]3 years ago

6 0

Answer:

10

Step-by-step explanation:

use permutations with repetitions formula

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What is the common denominator of 2/4 and 7/8

vlada-n [284]

Eight 4 times 2 is 8 and 8 times 1 is 8

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4 years ago

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A rhinoceros weight when rounded to the nearest thousand was 4,000 pounds. Which of these is the least the rhinoceros could have

Rudik [331]

Answer:

B- 3,500.

Step-by-step explanation:

This is because 3,500 is the lowest number that can be rounded to 4,000.

3,999 and 4,001 can also be rounded but.. (let me show you an image to help).

3,500 < 3,999 < 4,001.

That goes from smallest to largest numbers that round to 4,000.

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Answer:

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3 years ago

If f(x) = 3x – 2 and g(x) = 2x + 1, find (f – g)(x).

aliina [53]

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4 years ago

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90. The number of daily evening newspapers in the United States has decreased by 46.5% to

aleksandr82 [10.1K]

Answer:

700

Step-by-step explanation:

Given:

Daily evening newspapers in 2015 = 389

Percentage decrease from 2000 to 2015 = 46.5%

To find:

Number of newspapers in 2000 = ?

Solution:

Let the number of newspapers in 2000 = $x$

When 46.5% of the total newspapers in 2000 ( $x$ ) is subtracted from the total newspapers in 2000 ( $x$ ), it will be equal to the number of newspapers in 2015.

Making the equation as per the given statement:

$x-x\times 46.5\%=389\\\Rightarrow \dfrac{100x-46.5x}{100}=389\\\Rightarrow 53.5x=38900\\\Rightarrow x\approx \bold{727}$

Therefore, the answer is:

There were <em>727 </em>newspapers in 2000.

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3 years ago