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3 years ago

Please help me ill give brainiest

Mathematics

1 answer:

timofeeve [1]3 years ago

6 0

Answer: i think it is C

Step-by-step explanation: hpoe that helps!!!! :)

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Need help fast plz for my pre calc exam

bezimeni [28]

Answer:

h = 8.54 units

Step-by-step explanation:

The Law of Cosines

It relates the length of the sides of a triangle with one of its internal angles.

Let a,b, and c be the length of the sides of a given triangle, and x the included angle between sides a and b, then the following relation applies:

$c^2=a^2+b^2-2ab\cos x$

Since we know the values of all three side lengths, we solve the equation for x:

$\displaystyle \cos x=\frac{a^2+b^2-c^2}{2ab}$

For the triangle ABC in the image, a=10, b=15, c=13, thus:

$\displaystyle \cos A=\frac{10^2+15^2-13^2}{2*10*15}$

$\displaystyle \cos A=\frac{156}{300}$

$\displaystyle \cos A=0.52$

Thus, A = 58.67°

For the right triangle of height h and hypotenuse 10, we use the sine ratio:

$\displaystyle \sin 58.67^\circ=\frac{h}{10}$

Solving for h:

$h = 10\sin 58.67^\circ$

h = 8.54 units

6 0

2 years ago

What is the approximate circumference of the circle shown below?

Thepotemich [5.8K]

Answer:

the answer to this is C. 129 cm

4 0

2 years ago

PLEASE HELP IM STUCK

SpyIntel [72]

Step-by-step explanation:

$\frac{y2 - y1 }{x2 - x1} = \frac{3 - - 2}{5 - 0} = \frac{5}{5} = 1$

4 0

1 year ago

Read 2 more answers

About 2% of children in the United States are allergic to peanuts. Choose three children at random and let the random variable X

VMariaS [17]

For the answer to the question above asking what is the conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy?
The answer to the question above is 0.0012. I hope this helps

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2 years ago

Please help immediately!!

JulijaS [17]

Answer:

hjd

Step-by-step explanation:

3 0

2 years ago