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2 years ago

The sail of a boat is in the shape of a right triangle. Which expression shows the height, in meters, of the sail?

Mathematics

2 answers:

muminat2 years ago

5 0

Answer:8(cos35)

Step-by-step explanation:

aalyn [17]2 years ago

3 0

Answer:

8(cos35)

Step-by-step explanation:

Your welcome.

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Let k(w)= w+3/w+9. Find k^-1(-4)

DENIUS [597]

Answer:

$\displaystyle k^{-1} (-4) = -\frac{39}{5}$

Step-by-step explanation:

We are given the function:

$\displaystyle k(w) = \frac{w + 3}{w + 9}$

And we want to find k⁻¹(-4).

Recall that by the definition of inverse functions:

$\displaystyle \text{If } f(a) = b, \text{ then } f^{-1}(b) = a$

Let k⁻¹(-4) = x, where x is an unknown value. Then by definition, k(x) must equal -4.

So:

$\displaystyle k(x) = \frac{x+3}{x+9} = -4$

Solve for x:

$\displaystyle \begin{aligned} \frac{x+3}{x+9} &= -4 \\ \\ x+3 &= -4(x+9) \\ \\ x+3 &= -4x - 36 \\ \\ x &= -\frac{39}{5} \end{aligned}$

Hence, k(-39/5) = -4. By definition of inverse functions, then, k⁻¹(-4) = -39/5.

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2 years ago

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likoan [24]

Answer:

Step-by-step explanation:

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Y_Kistochka [10]

The perimeter of the shape shown is 63 units

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2 years ago

What is the area of the shape below.

Alex787 [66]

For a trapezoid, the area is:

S=(b+B)h/2, where b and B are the bases, and h is the height.

b=2

B=2+2+2=6

h=2.

S=(2+6)×2/2=8

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3 years ago

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Find the GCF 15, 18, 30

katen-ka-za [31]

You need to find the prime factors of each term in order to find the greatest common factor.

The answer is 3.

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