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3 years ago

WC= 15 and CO = 17, what is OW?

Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

4 0

We know that triangle COW is a right triangle by the Tangent to a Circle Theorem.

So, we can use Pythagorean Theorem to find OW.

OW² + WC² = CO²

OW² + 15² = 17²

OW² + 225 = 289

OW² = 64

OW = 8

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State the domain, the range, and the intervals on which function is increasing, decreasing, or constant in interval notation

aleksandr82 [10.1K]

Answer:

Domain: $[-1,\infty)$

Range: $(-\infty, 3]$

Decreases over: $(-1,-\infty)$

Step-by-step explanation:

Given

$f(x) = -\sqrt{x + 1} + 3$ --- Missing from the question

Solving (a): The domain

To get the domain, the expression under the square root must not be negative.

In other words:

$x + 1 \ge 0$

Solve for x

$x + 1 -1\ge 0-1$

$x \ge -1$

Hence, the domain is:

$[-1,\infty)$

To get the range, we plot the values of the domain in the expression.

$x = -1$

$f(x) = -\sqrt{x + 1} + 3$

$f(-1) = -\sqrt{-1+1} +3$

$f(-1) = -\sqrt{0} +3$

$f(-1) = -0 +3$

$f(-1) = 3$

$x = \infty$

$f(\infty) = -\sqrt{\infty +1}+3$

$f(\infty) = -\sqrt{\infty}+3$

$f(\infty) = -\infty+3$

$f(\infty) = -\infty$

So, the range is: $(-\infty, 3]$

To get the interval where the function increases or not, we simply plot the graph of f(x).

See attachment for graph.

From the attachment, it will be observed that the graph of f(x) continuously decreases from x = -1, and it never increased.

This implies that, the graph decreases over the interval $(-1,-\infty)$

6 0

3 years ago

Helpppp please can somebody please explain this to me.

katen-ka-za [31]

Answer:

this is simple once you get the hang of it!! as you see in the chart they gave you, 1=3.15, meaning you graph it (1, 3.15) and so on. all you do is multiply each number (for example, 4) times 3.15 and (4x3.15=6). so 3.15 times all the x-axis numbers and graph it (x, y).. hope this makes sense :)

8 0

3 years ago

I require assistance if anyone were to answer correctly they get marked brainliest

CaHeK987 [17]

4x + 8y = -40

if x = -6

4(-6) + 8y = -40

-24 + 8y = -40

8y = -40 + 24

8y = - 16

y = -16/8

y = -2

8 0

3 years ago

Read 2 more answers

Help help help pls<br> pls i need it done fast asap

Verizon [17]

Answer:

Step-by-step explanation:

3x9

4 0

3 years ago

I need help on this question plz

wolverine [178]

The formula for Surface area of cylinder is given by

Surface area = $2\pi rh+2\pi r^2$

where r is radius and h is height

So r= 5 cm and h= 12 cm

Let's plug the values in the formula

Surface area of cylinder = $2\pi (5)(12) +2\pi (5)^2= 2\pi (60 + 25)$

= 2(3.14)(85)

= 533.8 cm²

Last option is the correct one

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3 years ago