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Mademuasel [1]
2 years ago
10

Lindbergh's Air Speed Charles Lindbergh estimated that at the start of his historic flight the practical economical air speed wa

s 95 mph and at 4000 statute miles from the starting point it was 75 mph (www.charleslindbergh.com). Assume that the practical cconomical air speed S is a linear function of the distance D from the starting point as shown in the accompanying figure. Find a formula for that function.
Mathematics
1 answer:
Strike441 [17]2 years ago
6 0

The function based on the information will be S = -0.005D + 95.

<h3>How to illustrate the function?</h3>

It should be noted that d is the distance from the starting point while S is the speed.

The points given are (0 95)( 4000, 75).

Slope = (75 - 95)(4000 - 0)

= 0.005

The equation will be:

S = -0.005D + 95

Learn more about functions on:

brainly.com/question/25638609

#SPJ1

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Which expression is equivalent to 1/4 (8-6x+12)
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So:

Let us simply the parenthesis first.

So we have \sf{(8-6x+12)}

We can rearrange the terms and get:

\sf{(8+12-6x)}

Which is equal to

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So now we have to complete it by multiplying it all by 1/4 which is basically dividing it by 4.

So:

\sf{\frac{20-6x}{4}}

Simplifying that, we get:

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And reducing that farther we finally get:

\sf{5-\frac{3}{2}x}

Which is your final answer :)
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3 years ago
Does the point (-4, 2) lie inside or outside or on the circle x^2 + y^2 = 25?​
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Given equation of the Circle is ,

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<u>Finding</u><u> </u><u>distance</u><u> between</u><u> </u><u>the </u><u>two </u><u>points</u><u> </u><u>:</u><u>-</u><u> </u>

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<u>Hence </u><u>the</u><u> </u><u>point</u><u> </u><u>lies </u><u>within</u><u> </u><u>the </u><u>circle</u><u> </u><u>.</u>

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The results of a survey are shown in the pie chart below and the survey 28 students say their favorite dessert is ice cream how
Rainbow [258]

Answer:

12 students.

Step-by-step explanation:

The complete question would be:

If ice cream is the last dessert, then we can solve for how many percent of the students like ice cream. If we add the 4 desserts percent, it should be equal to 100%

Pie : 15%

Candy : 23%

Cake : 27%

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So that is the number of students survey. Now to look for how may people like pie, we find what is 15% of 80. So we find the part of the whole this time:

\dfrac{15}{100}=\dfrac{x}{80}\\\\15(80)=100x\\\\1200 = 100x\\\\\dfrac{1200}{100}=\dfrac{100x}{100}\\\\12 = x

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Parallel lines will never touch each other while perpendicular forms like an X shape. The slope for the parallel is the same while the perpendicular is a negative reciprocal. (Ex for negative reciprocal. 2/4=4/2)
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