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2 years ago

Help I'm not sure if this is the answer? (This question is about trigonometric ratios)

Mathematics

1 answer:

dem82 [27]2 years ago

3 0

9514 1404 393

Answer:

(b) 15.32

Step-by-step explanation:

You can use your triangle sense to answer this.

The side x will always be shorter than the hypotenuse, 20. This eliminates the last two choices.

If the angle is 45°, then the sides are equal at about 0.707 times the length of the hypotenuse. That would make them 0.707×20 = 14.14. Since the angle is greater than 45°, the opposite side will be greater than 14.14. Only one answer choice fits between 14 and 20: the second choice -- 15.32.

The mnemonic SOH CAH TOA reminds you of the relation ...

Sin = Opposite/Hypotenuse

sin(50°) = x/20

x = 20×sin(50°) . . . . multiply by 20 to find x

x ≈ 15.32 . . . . . . . . . use your calculator to evaluate

The attachment is intended to show how the triangle side lengths change with angle.

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Which of these lists include all possible outcome for drawing a marble from a bag with 2 red,3 green, and 2 blue marbles?

Alisiya [41]

Answer:

Step-by-step explanation:

There are only three possible draws, however, some are more likely.

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3 years ago

Assume the rate of inflation is 5% per year for the next 2 years. What will be the cost of goods 2 years from now, adjusted fo

kirza4 [7]

The equation for inflation is
A = P*(1+r)^t
which is an exponential growth equation (if r > 0). If r < 0, then we have deflation.

where...
A = final price after t years
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r = rate of inflation in decimal form
t = number of years

In this case,
A = unknown (we're solving for this)
P = 280 is the starting price
r = 0.05 is the decimal form of 5%
t = 2 years

We will plug these three pieces of info into the formula to get...
A = P*(1+r)^t
A = 280*(1+0.05)^2
A = 280*(1.05)^2
A = 280*(1.1025)
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Answer: 308.70 dollars

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3 years ago

This is review, please help it’s due tomorrow!

Svet_ta [14]

I dont see anything

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2 years ago

A tree DOUBLES in height each year until it reached its maximum height over the course of 10 years. How many years did it take f

RideAnS [48]

Answer:

9 years

the tree doubles in height

we can make a model

1 x 2 = 2

2 x 2 = 4

4 x 2 = 8

8 x 2 = 16

16 x 2 = 32

32 x 2 = 64

64 x 2 = 128

128 x 2 = 256

256 x 2 = 512

512 x 2 = 1024

Let's say 1024 is the maximum height

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Step-by-step explanation:

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3 years ago

to determine a student's grade, a teacher throws out the lowest grade obtained on 5 tests, averages the remaining grades, and ro

RoseWind [281]

Answer:

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Step-by-step explanation:

75 + 90 + 88 + 86 = 339

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Grade B = 80-89%

3 0

3 years ago

Read 2 more answers