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3 years ago

O is the circumcenter of 4ABC. If OB = OC = BC, what is ∠BAC?

Mathematics

2 answers:

KonstantinChe [14]3 years ago

8 0

Answer:

This is a question for a test. I don't want sound mean but, next time please put in the work.

Step-by-step explanation:

Ahat [919]3 years ago

7 0

Answer:

Step-by-step explanation:

I drew a diagram on paper but cant here soooo....

but math checks out i think.

Angles AOD and COB are both 36.

Angles AOC and DOB are both 144.

DOB has to be 4 times angle COB, right? if so, then:

144 = 4*36. That checks out. Now to see if all the angles combined are 360.

36 + 36 + 144 + 144 =360. It works!

This is my first answer ever btw so if the formatting and grammar is bad im sorry.

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The graph box linear function f passes through the point (1, -9) and has a slope of 3

Marat540 [252]

9514 1404 393

Answer:

C) 4

Step-by-step explanation:

The point-slope equation of the line is ...

y -k = m(x -h) . . . . . line with slope m through point (h, k)

y +9 = 3(x -1) . . . . . line with slope 3 through point (1, -9)

For y=0 (the 0 of the function), we have ...

9 = 3(x -1)

3 = x -1

4 = x

The x-intercept is (4, 0).

3 0

2 years ago

Find a closed-form solution to the integral equation y(x) = 3 + Z x e dt ty(t) , x > 0. In other words, express y(x) as a fun

MrMuchimi

Answer:

$y{x} = \sqrt{7+2Inx}$

Step-by-step explanation:

$y(x)= 3 + \int\limits^x_e {dx}/ \, ty(t) , x>0}$

Let say; By y(x)= y(e)

we have;

$y(e)= 3 + \int\limits^e_e {dt}/ \, ty= 3+0$

Using Fundamental Theorem of Calculus and differentiating by Lebiniz Rule:

$y^{1} (x) = 0 + 1/ xy$

$y^{1} = 1/xy$

dy/dx = 1/xy

$\int\limits {y} \, dxy = \int\limits \, dx/x$

$y^{2}/2 Inx + C$

RECALL: y(e) = 3

$(3)^{2} / 2 = In (e) + C$

$\frac{9}{2} =In(e)+C$

$\frac{9}{2} - 1 = C$

$\frac{7}{2} = C$

$y^{2} / 2 = In x +C$

$y^{2} / 2 = In x +7/2$

MULTIPLYING BOTH SIDE BY 2 , TO ELIMINATE THE DENOMINATOR, WE HAVE;

$y^{2} = {7+2Inx}$

$y{x} = \sqrt{7+2Inx}$

8 0

3 years ago

F(x) = 7 - 5x + 7x2<br> find f(-9)

Law Incorporation [45]

Answer:

Step-by-step explanation:

F(x) = 7 - 5x + 7x²

f(-9) = 7 - 5*(-9) + 7*(-9)²

= 7 + 45 + 7*81

= 7 + 45 + 567

= 619

7 0

3 years ago

Read 2 more answers

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Elan Coil [88]

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3 years ago

A company has 3.12 × 108 dollars to spend on salaries for its employees. The company has 6.5 × 103 employees. Each employee earn

Lilit [14]

Answer:

its b

Step-by-step explanation:

4 0

3 years ago