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ANTONII [103]
4 years ago
8

An object is moving at a speed of 230 feet per week. Express this speed in inches per minute. Round your answer to the nearest h

undredth
Mathematics
1 answer:
Kruka [31]4 years ago
5 0

Answer:

0.02 inches per minute

Step-by-step explanation:

1 Week = 10080 minutes

Formaul: multiply the time value by 10080  to find the minutes in a week or do it the long way 60x24x7 = 10080

230/10080 = 0.02281746031 or 0.02 rounded to nearest hundert.

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Answer:

The correct answer is 54 rails.

Step-by-step explanation:

Max builds rail fences. For one style of fence, each section uses 3 vertical fence posts and 6 horizontal rails.

For every style of fence Max uses 3 vertical fence posts and 6 horizontal rails.

For every style of fence Max uses vertical fence posts and horizontal rails in the ratio of 1 : 2.

Max uses 27 posts . Therefore he needs to use 27 × 2 = 54 rails.

Therefore Max needs 54 rails for a fence that has 27 posts.

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Extended Problems, Extraneous Solutions
diamong [38]

Answer:

1a. 2 is the solution

1b. -3 is because square root of 1 doesn't equal -1.

1c.-3

Step-by-step explanation:

1.

(x + 2 =  \sqrt{3x + 10}

Square both sides

(x + 2) {}^{2}  = 3x + 10

Remeber perfect square Rule

(x + y) {}^{2}  =  {x}^{2}  + 2xy +  {y}^{2}

So now we got

x {}^{2}  + 4x + 4 = 3x + 10

{x}^{2}  + x + 4 = 10

{x}^{2}  + x - 6 = 0

Factor into binomial.

(x + 3)(x - 2) = 0

So our solution is 3 or 2. However, let's check our work.

- 3 + 2 =  \sqrt{3( - 3) + 10}

- 1 =  \sqrt{1}

However square root of 1 is 1. It could be 1 but in Math, <em>We</em><em> </em><em>only</em><em> </em><em>take</em><em> </em><em>the</em><em> </em><em>principal</em><em> </em><em>square</em><em> </em><em>root</em><em> </em><em>which</em><em> </em><em>is</em><em> </em><em> </em><em>positive</em><em> </em><em>always</em><em>.</em><em> </em><em>So</em><em> </em><em>-3</em><em> </em><em>isn't</em><em> </em><em>a</em><em> </em><em>solution</em><em>.</em>

<em>So</em><em> </em><em>let</em><em> </em><em>try</em><em> </em><em>2</em><em>.</em>

<em>2 + 2 =  \sqrt{3(2) + 10}  = 4 =  \sqrt{16}  = 4 = 4</em>

<em>So</em><em> </em><em>this</em><em> </em><em>is</em><em> </em><em>indeed</em><em> </em><em>the</em><em> </em><em>solution</em><em>.</em>

<em>Make</em><em> </em><em>up</em><em> </em><em>equation</em><em> </em><em>for</em><em> </em><em>2</em><em> </em><em>and</em><em> </em><em>3</em><em>.</em><em> </em><em>Ask</em><em> </em><em>me</em><em> </em><em>if</em><em> </em><em>you</em><em> </em><em>need</em><em> </em><em>help</em><em>.</em>

5 0
2 years ago
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