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Savatey [412]
3 years ago
13

Answer to 9a is 11.3km

Mathematics
1 answer:
DENIUS [597]3 years ago
8 0

Answer:

11.3 Km

Step-by-step explanation:

Consider the right triangle formed by AB and West.

The acute angle WAB = 270° - 250° = 20°

and West is the adjacent side of the right triangle with AB the hypotenuse

Using the cosine ratio in the right triangle, then

cos20° = \frac{adjacent}{hypotenuse} = \frac{adj}{12}

Multiply both sides by 12

12 × cos20° = adjacent

11.2763.. = adjacent, that is

B is 11.3 Km west of A

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Crazy boy [7]
You will need three roots for this, so we have
Let x = -30, -10 and +20
So the factors will be (x+30)(x+10)(x-20)
The divide it to 100, this will help bring the peak up and down
So the polynomial function R(x) will become
1/100 * (x+30)(x+10)(x-20)
R(x) = 1/100 * (x+30)(x+10)(x-20)

Finding the X-intercept:
Let R(x) = 0 and solve for x.
1/100 * (x+30)(x+10)(x-20) = 0
x = -30, -10, 20 are the x-intercepts.

8 0
3 years ago
Which is the graph of y- 3 = -2/3(x + 6)?
Olegator [25]

Answer:

put points on (1.5, 0) and (0, -1), then draw a continuous line through them

Step-by-step explanation:

y - 3 = -2/3(x + 6)

y - 3 = (-2/3)x - 4

y = (-2/3)x - 1

0 = (-2/3)x - 1

1 = (-2/3)x

x = 3/2 = 1.5

y = (-2/3)(0) - 1

y = -1

8 0
3 years ago
A vitamin has a mass of 5 grams. What is the mass of the vitamin in milligrams? (1,000 milligrams = 1 gram)
Rainbow [258]
5,000 milligrams time the five grams by a thousand<span />
3 0
3 years ago
Read 2 more answers
Please help me out!! Show your work:()
uysha [10]

Answer:

23.6

Step-by-step explanation:

A=1/2abSinC

A=1/2*6*8*Sin80

= 24 * Sin 80

=23.635

Not sure if this is 100% correct Sowwie

7 0
3 years ago
V\Researchers periodically survey a few thousand of the patients taking a certain medication in order to make connections betwee
yanalaym [24]

Answer:

The correct answer is - an observational study.

Step-by-step explanation:

It is given that, Researchers periodically survey a few thousand of the patients. These are taking specific medicine patients and researchers taking this survey to find the connection between that medication and the subjects' general health.

So, it can say that the researchers observed the patient's health by the effect of the medication, therefore, the Observational Study is the given method of gathering data.

6 0
3 years ago
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