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Umnica [9.8K]
3 years ago
8

Choose the graph where the constant of variation is 2.

Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0

Answer:

c

Step-by-step explanation:

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From a height of 50 meters above sea level on a cliff, two ships are sighted due west. The angles of depression are 61° and 28°.
Olenka [21]

Answer:

The ships are 66 meters apart.

Step-by-step explanation:

For the sake of convenience, let us label ships A and B

As shown in the figure, the distances to the ships from right triangles.

The distance to the ship A is d_1 and it is given by

tan (61^o)= \dfrac{50}{d_1}

d_1=\dfrac{50}{tan (61^o)}

\boxed{d_1= 27.71m}

And the distance to the ship B is d_2 and is given by

tan (28^o)= \dfrac{50}{d_2}

d_2=\dfrac{50}{tan (28^o)}

\boxed{ d_2=94.04m}

Therefore, the distance d between the ships A and B is

d= d_2-d_1=94.04-27.7\\\\\boxed{d=66m}

In other words, the ships are 66 meters apart.

8 0
3 years ago
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Solve for y. <br><br> 15 points to anyone who answers. Seriously need help with this!!!
gtnhenbr [62]
The answer to it is x=12
3 0
3 years ago
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What is the value of x?<br> 21<br> 24<br> 32<br> 44
VMariaS [17]

Answer:

x = 21

Step-by-step explanation:

Because GJ is a diameter, the angle K is a right angle (90 degrees).

Thus, 4x + 6 = 90, and 4x = 84.  Thus, x = 21

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2 years ago
Iodine-131 is a radioactive material with half-life of eight days. A scientist starts with 100 grams of iodinie- 131. Which func
MrRissso [65]
The correct answer is Choice A.

This is an example of an exponential equation, so we need the formula y=ab^x.

The a value is the starting value of 100. The b value must be a decimal lower than 1 because it is decreases.

If you substitute in 8 for x, you will see that the output is about 50 (half of 100).
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3 years ago
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Classify the model as Exponential GROWTH or DECAY.<br> A=1200(.85)6
BartSMP [9]

Answer: DECAY

Step-by-step explanation:

(.85) is less than 1

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