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sukhopar [10]
4 years ago
8

Two-variable inequalities from their graph: Please help me answer the question in the screenshot!

Mathematics
2 answers:
netineya [11]4 years ago
6 0

Answer:

Step-by-step explanation:

any two points on dotted line are (0,0) and (4,3)

slope=\frac{3-0}{4-0} =3/4\\eq.~ of~ dotted~ line~ is ~y=\frac{3}{4} \\consider~the~inequality~ y

Thepotemich [5.8K]4 years ago
4 0

Answer:

4X > 3Y

Step-by-step explanaition

The number on the x axis will always be larger than the one on the y-axis because if x is 4 y will be 3

Sorry if this is wrong

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F(x)=<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%5E2-4%7D" id="TexFormula1" title="\sqrt{x^2-4}" alt="\sqrt{x^2-4}" align="abs
hammer [34]

Solve for <em>x</em> when √(<em>x</em> ² - 4) = 1 :

√(<em>x</em> ² - 4) = 1

<em>x</em> ² - 4 = 1

<em>x</em> ² = 5

<em>x</em> = ±√5

We're looking at <em>x </em>≤ 0, so we take the negative square root, <em>x</em> = -√5.

This means <em>f</em> (-√5) = 1, or in terms of the inverse of <em>f</em>, we have <em>f</em> ⁻¹(1) = -√5.

Now apply the inverse function theorem:

If <em>f(a)</em> = <em>b</em>, then  (<em>f</em> ⁻¹)'(<em>b</em>) = 1 / <em>f '(a)</em>.

We have

<em>f(x)</em> = √(<em>x</em> ² - 4)   →   <em>f '(x)</em> = <em>x</em> / √(<em>x</em> ² - 4)

So if <em>a</em> = -√5 and <em>b</em> = 1, we get

(<em>f</em> ⁻¹)'(1) = 1 / <em>f '</em> (-√5)

(<em>f</em> ⁻¹)'(1) = √((-√5)² - 4) / (-√5) = -1/√5

The sign must be negative; see the attached plot, and take note of the negatively-sloped tangent line to the inverse of <em>f</em> at <em>x</em> = 1.

3 0
3 years ago
If EG and HJ are parallel lines and mEFI = 130°, what is mGFD?
padilas [110]

Answer:

if EG || HJ,

m GFD = 130°

Step-by-step explanation:

Because, m EFI = m GFD

( vertical opposite angles )

so, m GFD = 130°

3 0
3 years ago
on Sunday yassif swam 15 2/5 miles in 2.1 hours. What was Yassifs swimming pace in miles per hour? SHOW YOUR WORK
Igoryamba

Change the first to a decimal

15 2/5 = 15 4/10 = 15.4 miles

15.4 miles

------------

2.1 hours

7.33333333(repeating) miles/hour

7 1/3 miles per hour

5 0
3 years ago
197,492.2384 x 692.4512 = ?<br> Quick I'm too lazy to calculate it, thanks.
Alex787 [66]

Answer:

1.3675374e+12

Step-by-step explanation:

that's what the calculator said

8 0
3 years ago
Find points of discontinuity y=x^2+5x+6/x^2-16
taurus [48]

Answer:

  x=4 and x=-4

Step-by-step explanation:

We assume you intend ...

  y = (x^2 +5x +6)/(x^2 -16)

There will generally be points of discontinuity where the denominator is zero. Sometimes a denominator factor will be cancelled by a numerator factor, but the "hole" remains and there is still a discontinuity there.

Here, the denominator factors as the difference of squares:

  x^2 -16 = (x -4)(x +4)

There will be discontinuities where these factors are zero, at x=4 and x=-4.

6 0
3 years ago
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