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3 years ago

Help now please help help help

Mathematics

1 answer:

bazaltina [42]3 years ago

7 0

Answer:

r>7

Step-by-step explanation:

Subtract 2.92.9 from both sides

-1.3-2.9>-0.6r−1.3−2.9>−0.6r

Simplify -1.3-2.9−1.3−2.9 to -4.2−4.2

-4.2>-0.6r−4.2>−0.6r

Divide both sides by -0.6−0.6

\frac{-4.2}{-0.6}<r

−0.6

−4.2

Simplify \frac{-4.2}{-0.6}

−0.6 −4.2 to 77

7<r

Switch sides

r>7

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3 years ago

The graph of y=tan(x) is vertically stretched by a factor of 7, shifted a distance of 12 units to the left, reflected across the

Mekhanik [1.2K]

Step-by-step explanation:

A transformation(s) of a parent function is

$f(x) = a(bx - c) + d$

where a is vertical compression/stretched or reflection

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C is horinzontal translation

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First, we stretched this by 7

so we have

$y = 7 \tan(x)$

We need to shift this 12 units to the left so we have

$y = 7 \tan(x + 12)$

We need to reflect this across x axis so we get

$y = - 7 \tan(x + 12)$

We need to shift this downwards 15 so we get

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6 0

2 years ago

\\\\\\\-------!!!!!40 POINTS!!!!-----\\\\\\\\\

aleksandrvk [35]

Let's actually find the line of best fit...

m=(nΣyx-ΣyΣx)/(nΣx^2-ΣxΣx)

m=(11*836-130*55)/(11*385-3025)

m=2046/1210

m=93/55

b=(Σy-93Σx/55)/n

b=(55Σy-93Σx)/(55n)

b=(7150-5115)/(55*11)

b=185/55, so the line of best fit is:

y=(93x+185)/55

A) The approximate y-intercept (the value of y when x=0) is 185/55≈3.36.

Which means that those who do not practice at all will win about 3.36 times

B) y(13)=(93x+185)/55

y(13)≈25.34

So after 13 months of practice one would expect to win about 25.34 times.

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3 years ago