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3 years ago

Help with 38 and 39 please!! 15 pts!!!

Mathematics

2 answers:

Temka [501]3 years ago

6 0

Answer:

38. -2.2

39. -1

Step-by-step explanation:

38.

First let's count how far C is from F.

5 - (-4)=5 + 4 = 9

There are 9 spaces between C and F.

Let's find 9/5, which is 1.8

Because we're finding the distance from C to F, we add 1.8 to the value C.

-4 + 1.8 = -2.2

The point X in CF that is 1/5 of the distance from C to F is -2.2

Note: It's your judgement on whether or not your professor would want this in decimal form or rounded to -2. I'd keep it as -2.2 if you're not sure, because that is the correct answer.

39.

Now let's do the same thing with BD.

How far is B from D? 1 - (-5) = 1 + 5 = 6

What's (6*2)/3? 12/3 = 4

What's B + 4? -5 + 4 = -1

The point X on BD that is 2/3 of the distance from B to D. is -1

fgiga [73]3 years ago

3 0

Answer: X=-2 1/5, X=-1

Step-by-step explanation:

The distance from CF is 9 units, 1/5 that = 1 4/5, add that to -4 is -2 1/5.

The distance from BD is 6 units, 2/3 that =4, add that to -5 is -1.

Hope this helps!

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Step-by-step explanation:

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3 years ago

Given that tan0= -1, what is the value of sec0, for 3pi/2<0<2pi?

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3 years ago

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3 years ago

A force of 60 N is used to stretch two springs that are initially the same length. Spring A has a spring constant of 4 N/m, and

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Answer:

D:Spring A is 3 m longer than spring B because 15 – 12 = 3.

Step-by-step explanation:

In this question, you should remember the Hooke's Law in physics.

The Hooke's Law simply explains that the extension that occurs on a spring is directly proportional to the load applied on it.

The mathematical expression for this law is

$F=-kx$

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The question will need you to calculate the extension on the springs A and B then compare the values obtained.

In spring A

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To find the extension x apply the expression;

$F=-kx\\\\60=-4*x\\\\60=-4x\\\\\frac{60}{-4} =\frac{-4x}{-4} \\\\\\-15=x$

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Force, F=60N and spring constant , k=5N/m

To find the extension x apply the same expression

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3 years ago

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Answer:

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