3 years ago

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Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

5 0

Answer:

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Step-by-step explanation:

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When I add a number to another number four times as big, the result is 30. find the first number

Alex73 [517]

Answer:

x = 6

Step-by-step explanation:

Let x = first number

x+4x = 30

5x = 30

Divide by 5

5x/5 =30/5

x = 6

3 0

3 years ago

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Your friend attempted to factor an expression as shown. Find the error in your friends work. Then factor the expression correctl

loris [4]

Answer:

Third step is incorrect. The correct factored form is (x-1)(2x-5).

Step-by-step explanation:

The given expression is

$2x^2-7x+5$

We need to find the factored form of this expression.

Step 1: Given

$2x^2-7x+5$

Step 2: Splitting the middle term method, the middle term can be written as (-5x-2x).

$2x^2-5x-2x+5$

$(2x^2-5x)+(-2x+5)$

Step 3: Taking out common factors from each parenthesis.

$x(2x-5)-1(2x-5)$

Step 4: Taking out common factors.

$(x-1)(2x-5)$

Therefore, the third step is incorrect. The correct factored form is (x-1)(2x-5).

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3 years ago

(6-7i)+(5+4i)= (simplified)

GarryVolchara [31]

Answer:

11-3i

Step-by-step explanation:

6-7i+5+4i=6+5-7i+4i=11-3i

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3 years ago

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The price per person of renting a bus varies inversely with the number of people renting the bus. It cost $22 per person if 47 p

Ber [7]

If you take the cost times people then decide by new set of people.$22x47=____÷74= 13.972972973

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50 divided by 9,300 long division

IRINA_888 [86]

Answer:

0.0053763441

Step-by-step explanation:

90 divided by 9300 would be 0.0053763441

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3 years ago

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